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690:"Implementing just enough of the standard to pass a test is disingenuous, and has nothing to do with standards compliance," argued Mozilla UX lead Alex Limi, in his article "Mythbusting: Why Firefox 4 won't score 100 on Acid3." Limi argued that some of the tests, particularly those for SVG fonts, have no relation to real usage, and implementations in some browsers have been created solely for the point of raising scores.
454:. At the time the project resided at a URL clearly showing its experimental nature: "http://www.hixie.ch/tests/evil/acid/003/NOT_READY_PLEASE_DO_NOT_USE.html" Despite the notice in the URL, the test received widespread attention in the web-development community. At that time only 84 subtests had been done, and on 14 January Ian Hickson announced a competition to fill in the missing 16.
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Throughout 2010, several public
Developer Previews improved Internet Explorer 9's test scores from 55/100 (on 16 March) to 95/100 (as of 4 August). Dean Hachamovich, general manager of the IE team, argued that striving for 100/100 on the Acid3 test is neither necessary, nor desirable. He claimed that
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The ACID3 test is a collection of interesting tests, spread across a large set of standards. Some of those standards will see improvements in IE8 – in fact, IE8 already improves on IE7's score – but we are focused on the most important features and standards to make web developers' lives easier. The
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If the test is successful, the results of the Acid3 test will display a gradually increasing fraction counter below a series of colored rectangles. The number of subtests passed will indicate the percentage that will be displayed on the screen. This percentage does not represent an actual percentage
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Firefox 51.0a1 made a regression from 100 to 99 on 14 September 2016; Firefox 55.0a1 further regressed to 97 on 1 May 2017. In
Firefox Quantum versions, 63.0 received 97/100; 64.0 got 96/100, 68.1.0esr and later got 97/100. Firefox versions 105.0 received 99/100 while 109.0 clocked in at 97/100. As
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The test was officially released on 3 March 2008. A guide and commentary was expected to follow within a few months, but, as of March 2011, only the commentary had been released. The announcement that the test is complete means only that it is to be considered "stable enough" for actual use. A few
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After the Acid3 test page is completely rendered, the letter 'A' in the word "Acid3" can be clicked to see an alert (or shift-click for a new window) explaining exactly which subtests have failed and what the error message was. In case one of the 100 tests passed but took too much time, the report
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The compliance criteria require that the test be run with a browser's default settings. The final rendering must have a 100/100 score and must be pixel-identical with the reference rendering. On browsers designed for personal computers, the animation has to be smooth (taking no more than 33 ms for
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and that IE8 would improve only some of the standards being tested by Acid3. IE8 scored 20/100, which is much worse than all relevant competitors at the time of Acid3's release, and had some problems with rendering the Acid3 test page. On 18 November 2009, the
Internet Explorer team posted a blog
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a superior alternative to SVG fonts. Another
Mozilla engineer, Boris Zbarsky, claimed that the subset of the specification implemented in Webkit and Opera gives no benefits to web authors or users over WOFF, and he asserted that implementing SVG Fonts fully in a web browser is hard because it was
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and he commented out "the parts of the test that might get changed in the specs." They hoped that this change would "allow the specs to change in whatever way is best for the Web, rather than constraining the changes to only be things that happened to fit what Acid3 tested!"
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no longer pass the test as written. Hickson acknowledges that some aspects of the test were controversial and has written that the test "no longer reflects the consensus of the Web standards it purports to test, especially when it comes to issues affecting mobile browsers".
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teams announced a 100/100 score—developers of WebKit contacted
Hickson about a critical bug in Acid3 that presumably allowed a violation of the SVG 1.1 standard to pass. Hickson fixed the bug with the help of Cameron McCormack, a member of W3C's SVG Working Group.
449:
Google employee Ian
Hickson started working on the test in April 2007, but development progressed slowly. In December 2007, work restarted and the project received public attention on 10 January 2008, when it was mentioned in blogs by
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response code, but with image data in the body. This tests that the web browser correctly handles the 404 error code when fetching the favicon, by treating this as a failure and displaying the generic icon instead.
527:(used by Opera and Safari respectively) scored 100/100 on the test and rendered the test page correctly. At the time, no browser using the Presto or WebKit layout engines passed the performance aspect of the test.
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As a result, Firefox 4 and
Internet Explorer 9 achieved a score of 100/100 on Acid3, but Internet Explorer didn't render the test properly because it did not support text-shadow until Internet Explorer 10.
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Note that Acid3 does not display exactly how many subtests passed in a bucket. For example, 3 subtests passing and 4 subtests passing in bucket 2 would both render a black rectangle.
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Early iterations of the test were criticized for being a cherry-picked collection of features that were rarely used, as well as those that were still in a W3C working draft.
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683:, a notable web standards advocate, wrote, "The real point here is that the Acid3 test isn't a broad-spectrum standards-support test. It's a showpiece, and something of a
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When the test is running, the rectangles will be added to the rendered image; the number of subtests passed in the bucket will determine the color of the rectangles.
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of conformance as the test does not really keep track of the subtests that were actually started (100 is assumed). Moreover, the browser also has to
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1.0 alpha 1. Buckets 2, 4, and 6 pass all 16 subtests, buckets 1 and 3 pass more than 10 subtests while bucket 5 passes more than 5 subtests.
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scored 97/100, because it did not support SVG fonts. Later, Firefox 4 scored 100/100, because the SVG font tests were removed from Acid3.
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at that. Which is a shame, because what's really needed right now is exhaustive test suites for specifications—XHTML, CSS, DOM, SVG."
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On 2 April 2010, Ian
Hickson made minor changes to the test after Mozilla, due to privacy concerns, altered the way Gecko handles the
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test, the text of the Acid3 reference rendering is not a bitmap, in order to allow for certain differences in font rendering.
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261:) and consists of 100 subtests in six groups called "buckets", including four special subtests (0, 97, 98, and 99).
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189:(CSS), but this third Acid test also focuses on technologies used on highly interactive websites characteristic of
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According to
Mozilla employee Robert O'Callahan, Firefox did not support SVG fonts because Mozilla considered
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problems and bugs were found with the test, and it was modified to fix them. On 26 March 2008—the day both
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in the browser toolbar, not the favicon image from the Acid3 web server. The Acid3 server when asked for
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Jonas
Sicking (Mozilla) and Garrett Smith: subtest 72: dynamic modification of style blocks' text nodes.
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includes timing results for that single test. The alert reports the total time of the whole Acid3 test.
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By April 2017, the updated specifications had diverged from the test such that the latest versions of
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the two Acid3 failures related to features (SVG fonts and SMIL animation) that were "in transition".
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displayed a score of 100/100. Security concerns over downloadable fonts delayed Chrome from passing.
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Even before its official release, Acid3's impact on browser development was dramatic. In particular,
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All 16 subtests passed: Colored rectangle (left to right: red, orange, yellow, lime, blue, purple).
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1027:"Validating a qualified name does not match browsers in a corner case · Issue #319 · whatwg/dom"
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Acid3 was in development from April 2007, and released on 3 March 2008. The main developer was
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the page exactly as the reference page is rendered in the same browser. Like the text of the
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Please help update this article to reflect recent events or newly available information.
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A passing score is only considered valid if the browser's default settings were used.
308:) as well, though slower performance on a slow device does not imply non-conformance.
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On 17 September 2011, Ian Hickson announced an update to Acid3. In Hickson's words,
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The following developers contributed to the final test through this competition:
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presentation, showing that an internal build of the browser could score 32/100.
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The Acid3 test result on Safari 3 (above, failure) and Safari 4 (below, success)
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fonts could support the CSS standard, but fail the test in the Acid3 test. The
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Simon Pieters (Opera) and Anne van Kesteren (Opera): subtest 71: HTML parsing.
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The latest post-9.5 build scores 99/100 and fails the smoothness criterion.
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The following browser settings and user actions may invalidate the test:
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In order to render the test correctly, user agents need to implement the
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working drafts that have not made it to candidate recommendations yet.
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1594:"Safari Beta 4 is the First Browser to Hit a Perfect Acid3 Test Score"
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1891:"1409813 - Firefox Quantum 57.0b9 (64-bit) (Linux) Fails Acid 3 Test"
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Preventing attacks on a user's history through CSS :visited selectors
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Screenshot of Chromium 71 running the Acid3 test as of December 2018
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each subtest on reference hardware equivalent to a top-of-the-line
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Bucket 3: DOM2 Views, DOM2 Style, CSS 3 selectors and Media Queries
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1443:"Media queries and performance in Acid3 (and an error on my part)"
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encoded images, some more advanced selectors, CSS 3 color values (
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1356:"The competition for you to come up with the best test for Acid3"
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441:) as well as bogus selectors and values that should be ignored.
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1624:"The WebKit browser engine running under the Safari browser UI"
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to be standardized. This is required as the test uses a custom
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1923:"Windows Internet Explorer 8 Expert Zone Chat (20 March 2008)"
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browser engine, displays a score of 97/100 under version 109.
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2063:"Microsoft releases final IE9 preview, beta due in September"
87:
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specifications, which are currently under consideration by
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developers had been preparing for the imminent release of
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To pass the test the browser must also display a generic
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tables and forms when manipulated by script and DOM2 HTML
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Erik Dahlström (Opera): subtests 74 to 78: SVG and SMIL.
537:
Version 68 and later of Chrome gets a score of 97/100.
2167:"Acid3 Test Simplified; All Modern Browsers Score 100"
1386:"Moebius (announcement of the completion of the test)"
719:
Parts of the following standards are tested by Acid3:
2115:"Mythbusting: Why Firefox 4 won't score 100 on Acid3"
1818:"Mythbusting: Why Firefox 4 won't score 100 on Acid3"
371:
Acid3 rendered by Internet Explorer 8.0 (before the
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617:"not designed with integration with HTML in mind".
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Jonas Sicking (Mozilla): subtest 73: Nested events.
132:
114:
106:
98:
82:
72:
61:
51:
38:
890:Having add-ons or extensions installed and enabled
495:'s score rose from 60 to 87 in less than a month.
1995:, Microsoft. For IE 9's First Developer Preview.
1241:"Acid3 Browser Test – The Web Standards Project"
1001:"Acid3: Putting Browser Makers on Notice, Again"
372:
1869:Acid3 update for :link/:visited privacy changes
1708:"Turbocharge your Web experience with Opera 10"
1498:"WebKit achieves Acid3 100/100 in public build"
976:"HTML5 IRC logs: freenode / #whatwg / 20070422"
639:said that Acid3 did not agree with the goal of
2052:, Microsoft. For IE 9's 4th Developer Preview.
2033:, Microsoft. For IE 9's 3rd Developer Preview.
2014:, Microsoft. For IE 9's 2nd Developer Preview.
1944:Acid3 test does not map directly to that goal.
1080:"Comments in the source code of the test page"
3386:
2239:
8:
21:
3754:The quick brown fox jumps over the lazy dog
2141:"Ian Hickson announces Acid3 modifications"
887:Applying custom fonts, colors, styles, etc.
763:handling and HTTP status codes (subtest 16)
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1117:; van Kesteren, Anne (15 September 2009).
995:
993:
217:recommendation that were later removed in
20:
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663:, it scores a 100/100 on the Acid3 test.
2214:Post-release revisions to the Acid3 test
1738:"Issue 231: Acid test 3 fails on chrome"
1649:Stachowiak, Maciej (25 September 2008).
757:: image/png; text/plain (subtests 14–15)
512:Chrome, Presto and WebKit based browsers
461:Sylvain Pasche: subtests 66 and 67: DOM.
375:of the Acid3 test). 20/100, test failed.
352:11–15 subtests passed: Silver rectangle.
213:. It includes several elements from the
3881:Internet properties established in 2008
2209:The Acid3 test at Web Standards Project
1911:Last checked on 86.0 beta 5, 02.04.2021
1302:"The antialiasing controversy in Acid3"
967:
628:of 121.0 it scored 97/100 on the test.
154:'s compliance with elements of various
2043:The Web Standards Project's Acid3 Test
2024:The Web Standards Project's Acid3 Test
2005:The Web Standards Project's Acid3 Test
1986:The Web Standards Project's Acid3 Test
1327:van Kesteren, Anne (10 January 2008).
1181:"The Acid3 Test (reference Rendering)"
343:0 subtests passed: No rectangle shown.
1957:"An Early Look At IE9 for Developers"
1676:Lund Engebø, Helene (26 March 2009).
1413:"Tests that are never quite finished"
1191:from the original on 12 February 2010
1129:from the original on 11 February 2010
1090:from the original on 18 February 2008
957:Sputnik (JavaScript conformance test)
644:entry about the early development of
516:In 2008, development versions of the
349:6–10 subtests passed: Grey rectangle.
346:1–5 subtests passed: Black rectangle.
253:The main part of Acid3 is written in
7:
2204:The Acid3 Test (Reference Rendering)
2121:from the original on 26 January 2011
2069:from the original on 2 December 2010
1967:from the original on 8 February 2010
1251:from the original on 19 January 2010
1160:from the original on 2 February 2008
487:SVG library): subtest 79: SVG fonts.
265:Bucket 1: DOM Traversal, DOM Range,
2169:. 20 September 2011. Archived from
2143:. 17 September 2011. Archived from
1816:Limi, Alexander (25 January 2011).
1791:"Not Implementing Features Is Hard"
1678:"Opera Mobile 9.7 with Opera Turbo"
1148:Dahlström, Erik (22 January 2008).
784:Level 2 Events (subtests 17, 30–32)
271:Bucket 2: DOM2 Core and DOM2 Events
205:(SVG), Extensible Markup Language (
1933:from the original on 20 April 2008
1770:from the original on 29 March 2008
1764:"The missed opportunity of acid 3"
1714:. 1 September 2009. Archived from
1539:from the original on 28 March 2008
1508:from the original on 28 March 2008
1449:from the original on 25 April 2008
1419:from the original on 30 March 2008
14:
2095:from the original on 6 March 2010
1848:from the original on 5 April 2010
1789:Robert O'Callahan (3 June 2010).
1392:from the original on 8 March 2008
1362:from the original on 8 March 2008
1335:from the original on 7 March 2008
1275:"comment to 'Full pass of Acid3'"
1221:from the original on 5 April 2008
1215:"The performance aspect of Acid3"
146:test is a web test page from the
33:The reference rendering for Acid3
1688:from the original on 2 June 2009
1622:Peterson, Adele (8 April 2007).
1592:Paul Lilly (29 September 2008).
1558:Lars Erik Bolstad (March 2008).
1354:Hickson, Ian (14 January 2008).
1150:"Getting to the core of the web"
912:
745:Level 2 Traversal (subtests 1–6)
589:At the time of Acid3's release,
549:
433:In addition, the test also uses
27:
3855:1951 USAF resolution test chart
1308:from the original on 8 May 2009
1921:Chris Wilson (20 March 2008).
1470:"Last minute changes to Acid3"
1300:Hickson, Ian (29 March 2008).
769:Level 2 Core (subtests 17, 21)
201:. A few subtests also concern
1:
1889:chrisjone (18 October 2017).
1866:Hickson, Ian (2 April 2010),
1838:Baron, David (9 March 2010),
1384:Hickson, Ian (4 March 2008).
1078:Hickson, Ian (3 March 2008).
828:4.0 Transitional (subtest 71)
751:Level 2 Range (subtests 7–11)
585:Acid3 done on Firefox 67.0.2.
3825:"The North Wind and the Sun"
937:Comparison of layout engines
852:Conformance (subtests 81–96)
3607:Trabb Pardo–Knuth algorithm
846:1.1 Fonts (subtests 77, 79)
694:September 2011 test changes
422:fonts with CFF outlines or
3907:
3805:functions for optimization
3564:Snell & Wilcox SW2/SW4
1529:"Opera and the Acid3 Test"
796:Level 2 Style (subtest 45)
790:Selectors (subtests 33–40)
605:scored 94/100. Initially,
405:CSS 2.x Downloadable Fonts
16:Online HTML rendering test
3484:EIA 1956 resolution chart
3406:
3345:
3269:Internet Explorer for Mac
2831:
2820:
2448:
2437:
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2261:
2065:. ZDNet. 26 August 2010.
1527:Tim Altman (March 2008).
1123:World Wide Web Consortium
802:Level 2 HTML (subtest 60)
558:This section needs to be
223:World Wide Web Consortium
26:
3617:Just another Perl hacker
3479:Indian-head test pattern
3416:Reference implementation
464:David Chan: subtest 68:
203:Scalable Vector Graphics
3597:"Hello, World!" program
3436:Artificial intelligence
864:1.0 Strict (subtest 98)
3835:SMPTE universal leader
3542:Philips circle pattern
893:Installed and enabled
586:
445:Development and impact
396:
384:
376:
320:
277:Bucket 4: Behavior of
221:, but reintroduced in
187:Cascading Style Sheets
120:; 16 years ago
1273:(26 September 2008).
1245:Web Standards Project
1185:Web Standards Project
1084:Web Standards Project
1005:Web Standards Project
834:1.1 (subtests 74, 78)
584:
394:
382:
373:September 2011 update
370:
314:
286:the Acid3 Competition
284:Bucket 5: Tests from
160:Document Object Model
148:Web Standards Project
67:Web Standards Project
3840:EURion constellation
3660:3D computer graphics
3254:IBM Home Page Reader
1963:. 18 November 2009.
1651:"Full Pass of Acid3"
1560:"Public Acid3 build"
1059:on 27 September 2009
840:2.1 (subtests 75–76)
661:Internet Explorer 11
299:Bucket 6: ECMAScript
3426:Standard test image
3401:Standard test items
2117:. 25 January 2011.
646:Internet Explorer 9
641:Internet Explorer 8
601:scored 93/100, and
483:Cameron McCormack (
158:, particularly the
133:Current status
23:
3589:Computer languages
2147:on 12 October 2011
2048:2010-03-22 at the
2029:2010-08-14 at the
2010:2010-08-06 at the
1991:2010-08-06 at the
1682:Opera Software ASA
942:ECMAScript test262
870:Passing conditions
587:
530:Google Chrome and
401:CSS 3 Text Shadows
397:
385:
377:
321:
315:Acid3 rendered by
118:March 3, 2008
3863:
3862:
3815:Harvard sentences
3640:Canterbury corpus
3368:
3367:
3341:
3340:
3337:
3336:
3024:Internet Explorer
2816:
2815:
2812:
2811:
2433:
2432:
2429:
2428:
2219:What about Acid4?
2091:. 22 March 2008.
1762:(27 March 2008).
1710:(Press release).
1496:(26 March 2008).
1494:Maciej Stachowiak
1441:(22 April 2008).
1271:Maciej Stachowiak
1109:Lie, Håkon Wium;
1003:(Press release).
881:Zooming in or out
667:, which uses the
632:Internet Explorer
579:
578:
452:Anne van Kesteren
424:Embedded OpenType
140:
139:
52:Available in
3898:
3698:Machine learning
3627:Data compression
3469:SMPTE color bars
3395:
3388:
3381:
3372:
2833:
2822:
2548:Samsung Internet
2450:
2439:
2284:
2263:
2248:
2241:
2234:
2225:
2200:
2199:
2197:Official website
2183:
2182:
2180:
2178:
2163:
2157:
2156:
2154:
2152:
2137:
2131:
2130:
2128:
2126:
2111:
2105:
2104:
2102:
2100:
2085:
2079:
2078:
2076:
2074:
2059:
2053:
2040:
2034:
2021:
2015:
2002:
1996:
1983:
1977:
1976:
1974:
1972:
1953:
1947:
1946:
1940:
1938:
1918:
1912:
1909:
1903:
1902:
1900:
1898:
1886:
1880:
1879:
1878:
1876:
1863:
1857:
1856:
1855:
1853:
1835:
1829:
1828:
1826:
1824:
1813:
1807:
1806:
1804:
1802:
1797:on 6 August 2011
1793:. Archived from
1786:
1780:
1779:
1777:
1775:
1756:
1750:
1749:
1747:
1745:
1734:
1728:
1727:
1725:
1723:
1704:
1698:
1697:
1695:
1693:
1673:
1667:
1666:
1664:
1662:
1646:
1640:
1639:
1637:
1635:
1619:
1613:
1612:
1610:
1608:
1589:
1583:
1582:
1577:
1575:
1570:on 30 March 2008
1566:. Archived from
1555:
1549:
1548:
1546:
1544:
1524:
1518:
1517:
1515:
1513:
1490:
1481:
1480:
1478:
1476:
1465:
1459:
1458:
1456:
1454:
1435:
1429:
1428:
1426:
1424:
1408:
1402:
1401:
1399:
1397:
1381:
1372:
1371:
1369:
1367:
1351:
1345:
1344:
1342:
1340:
1324:
1318:
1317:
1315:
1313:
1297:
1291:
1290:
1288:
1286:
1267:
1261:
1260:
1258:
1256:
1237:
1231:
1230:
1228:
1226:
1213:(1 April 2008).
1207:
1201:
1200:
1198:
1196:
1176:
1170:
1169:
1167:
1165:
1145:
1139:
1138:
1136:
1134:
1106:
1100:
1099:
1097:
1095:
1075:
1069:
1068:
1066:
1064:
1055:. Archived from
1048:
1042:
1041:
1039:
1037:
1023:
1017:
1016:
1014:
1012:
997:
988:
987:
985:
983:
972:
922:
917:
916:
884:Disabling images
778:(subtests 26–27)
715:Standards tested
685:Potemkin village
623:
574:
571:
565:
553:
552:
545:
363:Detailed results
330:
128:
126:
121:
94:
91:
89:
31:
24:
3906:
3905:
3901:
3900:
3899:
3897:
3896:
3895:
3866:
3865:
3864:
3859:
3850:Webdriver Torso
3800:EICAR test file
3758:
3720:
3692:
3678:Stanford dragon
3654:
3621:
3612:Man or boy test
3583:
3569:Telefunken FuBK
3474:EBU colour bars
3453:
3430:
3402:
3399:
3369:
3364:
3333:
3259:IBM WebExplorer
3172:
3068:
3009:
2885:
2827:
2808:
2757:
2713:
2679:
2597:
2444:
2425:
2375:
2308:
2278:
2257:
2252:
2195:
2194:
2191:
2186:
2176:
2174:
2173:on 6 March 2016
2165:
2164:
2160:
2150:
2148:
2139:
2138:
2134:
2124:
2122:
2113:
2112:
2108:
2098:
2096:
2087:
2086:
2082:
2072:
2070:
2061:
2060:
2056:
2050:Wayback Machine
2041:
2037:
2031:Wayback Machine
2022:
2018:
2012:Wayback Machine
2003:
1999:
1993:Wayback Machine
1984:
1980:
1970:
1968:
1955:
1954:
1950:
1936:
1934:
1920:
1919:
1915:
1910:
1906:
1896:
1894:
1888:
1887:
1883:
1874:
1872:
1865:
1864:
1860:
1851:
1849:
1837:
1836:
1832:
1822:
1820:
1815:
1814:
1810:
1800:
1798:
1788:
1787:
1783:
1773:
1771:
1758:
1757:
1753:
1743:
1741:
1736:
1735:
1731:
1721:
1719:
1706:
1705:
1701:
1691:
1689:
1675:
1674:
1670:
1660:
1658:
1648:
1647:
1643:
1633:
1631:
1621:
1620:
1616:
1606:
1604:
1591:
1590:
1586:
1573:
1571:
1557:
1556:
1552:
1542:
1540:
1526:
1525:
1521:
1511:
1509:
1492:
1491:
1484:
1474:
1472:
1467:
1466:
1462:
1452:
1450:
1437:
1436:
1432:
1422:
1420:
1410:
1409:
1405:
1395:
1393:
1383:
1382:
1375:
1365:
1363:
1353:
1352:
1348:
1338:
1336:
1326:
1325:
1321:
1311:
1309:
1299:
1298:
1294:
1284:
1282:
1269:
1268:
1264:
1254:
1252:
1239:
1238:
1234:
1224:
1222:
1209:
1208:
1204:
1194:
1192:
1178:
1177:
1173:
1163:
1161:
1147:
1146:
1142:
1132:
1130:
1119:"Media Queries"
1115:Glazman, Daniel
1108:
1107:
1103:
1093:
1091:
1077:
1076:
1072:
1062:
1060:
1050:
1049:
1045:
1035:
1033:
1025:
1024:
1020:
1010:
1008:
999:
998:
991:
981:
979:
978:. 23 April 2007
974:
973:
969:
965:
920:Internet portal
918:
911:
908:
895:User JavaScript
872:
867:
856:Data URI scheme
717:
696:
677:
634:
621:
591:Mozilla Firefox
575:
569:
566:
563:
554:
550:
543:
514:
447:
365:
328:
251:
242:Mozilla Firefox
124:
122:
119:
86:
73:Created by
41:
34:
17:
12:
11:
5:
3904:
3902:
3894:
3893:
3888:
3883:
3878:
3868:
3867:
3861:
3860:
3858:
3857:
3852:
3847:
3842:
3837:
3832:
3827:
3822:
3817:
3812:
3807:
3802:
3797:
3792:
3791:
3790:
3785:
3780:
3772:
3766:
3764:
3760:
3759:
3757:
3756:
3751:
3746:
3741:
3735:
3733:
3722:
3721:
3719:
3718:
3713:
3711:MNIST database
3708:
3702:
3700:
3694:
3693:
3691:
3690:
3685:
3680:
3675:
3673:Stanford bunny
3670:
3664:
3662:
3656:
3655:
3653:
3652:
3650:enwik8, enwik9
3647:
3645:Silesia corpus
3642:
3637:
3635:Calgary corpus
3631:
3629:
3623:
3622:
3620:
3619:
3614:
3609:
3604:
3599:
3593:
3591:
3585:
3584:
3582:
3581:
3576:
3571:
3566:
3561:
3539:
3534:
3486:
3481:
3476:
3471:
3465:
3463:
3455:
3454:
3452:
3451:
3446:
3440:
3438:
3432:
3431:
3429:
3428:
3423:
3418:
3413:
3407:
3404:
3403:
3400:
3398:
3397:
3390:
3383:
3375:
3366:
3365:
3363:
3362:
3357:
3352:
3346:
3343:
3342:
3339:
3338:
3335:
3334:
3332:
3331:
3326:
3321:
3316:
3311:
3306:
3301:
3296:
3291:
3286:
3281:
3276:
3271:
3266:
3261:
3256:
3251:
3246:
3241:
3236:
3231:
3226:
3221:
3216:
3211:
3206:
3201:
3196:
3191:
3186:
3180:
3178:
3174:
3173:
3171:
3170:
3165:
3160:
3155:
3150:
3145:
3140:
3135:
3130:
3125:
3120:
3115:
3110:
3105:
3100:
3095:
3090:
3085:
3079:
3077:
3070:
3069:
3067:
3066:
3061:
3056:
3051:
3046:
3041:
3036:
3031:
3026:
3020:
3018:
3011:
3010:
3008:
3007:
3002:
2997:
2992:
2987:
2982:
2977:
2972:
2967:
2962:
2957:
2952:
2947:
2942:
2937:
2932:
2927:
2922:
2917:
2912:
2907:
2902:
2896:
2894:
2887:
2886:
2884:
2883:
2878:
2873:
2868:
2863:
2858:
2853:
2848:
2842:
2840:
2829:
2828:
2825:
2818:
2817:
2814:
2813:
2810:
2809:
2807:
2806:
2801:
2796:
2791:
2786:
2781:
2776:
2771:
2765:
2763:
2759:
2758:
2756:
2755:
2750:
2745:
2740:
2735:
2730:
2724:
2722:
2715:
2714:
2712:
2711:
2706:
2701:
2696:
2690:
2688:
2681:
2680:
2678:
2677:
2676:
2675:
2670:
2665:
2660:
2655:
2644:
2639:
2634:
2629:
2624:
2619:
2614:
2608:
2606:
2599:
2598:
2596:
2595:
2590:
2585:
2580:
2575:
2570:
2565:
2560:
2555:
2550:
2545:
2540:
2535:
2530:
2520:
2518:Microsoft Edge
2515:
2510:
2505:
2500:
2495:
2490:
2485:
2480:
2475:
2470:
2465:
2459:
2457:
2446:
2445:
2442:
2435:
2434:
2431:
2430:
2427:
2426:
2424:
2423:
2418:
2413:
2408:
2407:
2406:
2405:
2404:
2394:
2383:
2381:
2377:
2376:
2374:
2373:
2372:
2371:
2366:
2361:
2356:
2351:
2341:
2336:
2331:
2330:
2329:
2318:
2316:
2310:
2309:
2307:
2306:
2301:
2296:
2290:
2288:
2280:
2279:
2277:
2276:
2273:
2270:
2266:
2259:
2258:
2253:
2251:
2250:
2243:
2236:
2228:
2222:
2221:
2216:
2211:
2206:
2201:
2190:
2189:External links
2187:
2185:
2184:
2158:
2132:
2106:
2080:
2054:
2035:
2016:
1997:
1978:
1948:
1913:
1904:
1881:
1858:
1830:
1808:
1781:
1751:
1729:
1718:on 30 May 2012
1712:Opera Software
1699:
1668:
1641:
1614:
1584:
1564:Opera Software
1550:
1533:Opera Software
1519:
1482:
1460:
1430:
1403:
1373:
1346:
1319:
1292:
1262:
1232:
1202:
1179:Hickson, Ian.
1171:
1154:Opera Software
1140:
1101:
1070:
1051:Hickson, Ian.
1043:
1018:
1007:. 3 March 2008
989:
966:
964:
961:
960:
959:
954:
949:
944:
939:
934:
924:
923:
907:
904:
903:
902:
891:
888:
885:
882:
871:
868:
866:
865:
859:
853:
847:
841:
835:
829:
823:
813:
803:
797:
791:
785:
779:
770:
764:
761:<object>
758:
752:
746:
740:
734:
728:
721:
716:
713:
704:Opera Software
700:Håkon Wium Lie
695:
692:
676:
673:
665:Microsoft Edge
633:
630:
624:pseudo-class.
577:
576:
557:
555:
548:
542:
539:
525:layout engines
513:
510:
489:
488:
481:
478:
475:
472:
469:
462:
446:
443:
364:
361:
357:
356:
353:
350:
347:
344:
301:
300:
297:
282:
275:
272:
269:
250:
247:
150:that checks a
138:
137:
134:
130:
129:
116:
112:
111:
108:
104:
103:
100:
96:
95:
84:
80:
79:
74:
70:
69:
63:
59:
58:
53:
49:
48:
42:
39:
36:
35:
32:
15:
13:
10:
9:
6:
4:
3:
2:
3903:
3892:
3889:
3887:
3884:
3882:
3879:
3877:
3874:
3873:
3871:
3856:
3853:
3851:
3848:
3846:
3843:
3841:
3838:
3836:
3833:
3831:
3830:"Tom's Diner"
3828:
3826:
3823:
3821:
3818:
3816:
3813:
3811:
3808:
3806:
3803:
3801:
3798:
3796:
3795:"Bad Apple!!"
3793:
3789:
3786:
3784:
3781:
3779:
3776:
3775:
3773:
3771:
3768:
3767:
3765:
3761:
3755:
3752:
3750:
3747:
3745:
3742:
3740:
3739:Etaoin shrdlu
3737:
3736:
3734:
3731:
3727:
3723:
3717:
3714:
3712:
3709:
3707:
3704:
3703:
3701:
3699:
3695:
3689:
3686:
3684:
3681:
3679:
3676:
3674:
3671:
3669:
3666:
3665:
3663:
3661:
3657:
3651:
3648:
3646:
3643:
3641:
3638:
3636:
3633:
3632:
3630:
3628:
3624:
3618:
3615:
3613:
3610:
3608:
3605:
3603:
3600:
3598:
3595:
3594:
3592:
3590:
3586:
3580:
3577:
3575:
3574:TVE test card
3572:
3570:
3567:
3565:
3562:
3559:
3555:
3551:
3547:
3543:
3540:
3538:
3535:
3533:
3529:
3525:
3521:
3517:
3513:
3509:
3505:
3501:
3497:
3493:
3490:
3489:BBC Test Card
3487:
3485:
3482:
3480:
3477:
3475:
3472:
3470:
3467:
3466:
3464:
3461:
3456:
3450:
3447:
3445:
3442:
3441:
3439:
3437:
3433:
3427:
3424:
3422:
3419:
3417:
3414:
3412:
3409:
3408:
3405:
3396:
3391:
3389:
3384:
3382:
3377:
3376:
3373:
3361:
3358:
3356:
3353:
3351:
3348:
3347:
3344:
3330:
3327:
3325:
3322:
3320:
3317:
3315:
3312:
3310:
3307:
3305:
3302:
3300:
3297:
3295:
3292:
3290:
3287:
3285:
3282:
3280:
3277:
3275:
3272:
3270:
3267:
3265:
3262:
3260:
3257:
3255:
3252:
3250:
3247:
3245:
3242:
3240:
3237:
3235:
3232:
3230:
3227:
3225:
3222:
3220:
3217:
3215:
3212:
3210:
3207:
3205:
3202:
3200:
3197:
3195:
3192:
3190:
3187:
3185:
3182:
3181:
3179:
3175:
3169:
3166:
3164:
3161:
3159:
3156:
3154:
3151:
3149:
3146:
3144:
3141:
3139:
3136:
3134:
3131:
3129:
3126:
3124:
3121:
3119:
3118:Nokia Symbian
3116:
3114:
3111:
3109:
3106:
3104:
3101:
3099:
3096:
3094:
3091:
3089:
3086:
3084:
3081:
3080:
3078:
3075:
3071:
3065:
3062:
3060:
3057:
3055:
3052:
3050:
3047:
3045:
3042:
3040:
3037:
3035:
3032:
3030:
3027:
3025:
3022:
3021:
3019:
3016:
3012:
3006:
3003:
3001:
2998:
2996:
2993:
2991:
2988:
2986:
2983:
2981:
2978:
2976:
2973:
2971:
2970:PirateBrowser
2968:
2966:
2965:Mozilla suite
2963:
2961:
2958:
2956:
2953:
2951:
2948:
2946:
2943:
2941:
2938:
2936:
2933:
2931:
2928:
2926:
2923:
2921:
2918:
2916:
2913:
2911:
2908:
2906:
2903:
2901:
2898:
2897:
2895:
2892:
2888:
2882:
2879:
2877:
2874:
2872:
2869:
2867:
2864:
2862:
2859:
2857:
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733:Level 2 Views
732:
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681:Eric A. Meyer
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45:Web standards
43:
37:
30:
25:
19:
3886:Web software
3787:
3744:Hamburgevons
3458:Television (
3444:Chinese room
3421:Sanity check
3329:WorldWideWeb
3044:MediaBrowser
3039:GreenBrowser
2920:Firefox Lite
2826:Discontinued
2304:Privacy mode
2255:Web browsers
2175:. Retrieved
2171:the original
2161:
2151:17 September
2149:. Retrieved
2145:the original
2135:
2123:. Retrieved
2109:
2097:. Retrieved
2089:"Acid Redux"
2083:
2071:. Retrieved
2057:
2038:
2019:
2000:
1981:
1969:. Retrieved
1951:
1942:
1935:. Retrieved
1916:
1907:
1895:. Retrieved
1884:
1873:, retrieved
1868:
1861:
1850:, retrieved
1840:
1833:
1823:20 September
1821:. Retrieved
1811:
1799:. Retrieved
1795:the original
1784:
1772:. Retrieved
1754:
1742:. Retrieved
1732:
1720:. Retrieved
1716:the original
1702:
1690:. Retrieved
1671:
1659:. Retrieved
1644:
1632:. Retrieved
1617:
1605:. Retrieved
1597:
1587:
1579:
1572:. Retrieved
1568:the original
1553:
1541:. Retrieved
1522:
1510:. Retrieved
1473:. Retrieved
1463:
1451:. Retrieved
1433:
1421:. Retrieved
1406:
1394:. Retrieved
1364:. Retrieved
1349:
1337:. Retrieved
1322:
1310:. Retrieved
1295:
1283:. Retrieved
1265:
1253:. Retrieved
1235:
1223:. Retrieved
1205:
1193:. Retrieved
1174:
1162:. Retrieved
1143:
1131:. Retrieved
1104:
1092:. Retrieved
1073:
1061:. Retrieved
1057:the original
1053:"Acid Tests"
1046:
1036:21 September
1034:. Retrieved
1030:
1021:
1009:. Retrieved
980:. Retrieved
970:
899:Greasemonkey
876:
873:
858:(subtest 97)
822:(subtest 70)
812:(subtest 68)
755:Content-Type
727:1.1 Protocol
718:
709:
697:
689:
678:
658:
654:
635:
626:
619:
611:
588:
567:
559:
536:
532:Opera Mobile
529:
515:
497:
490:
466:UTF-16/UCS-2
456:
448:
432:
398:
386:
358:
338:
322:
306:Apple laptop
302:
288:(SVG, HTML,
252:
231:
180:
168:
143:
141:
107:Registration
40:Type of site
18:
3749:Lorem ipsum
3730:filler text
3683:Utah teapot
3668:Cornell box
3449:Turing test
3355:Comparisons
3314:ThunderHawk
3294:NetPositive
3234:Edge Legacy
3163:WebPositive
3128:Opera Coast
2990:Swiftweasel
2753:qutebrowser
2642:Tor Browser
2637:SlimBrowser
2402:third-party
2354:Web storage
2349:WebAssembly
1897:23 December
1844:, Mozilla,
1801:15 December
1760:Mike Shaver
1722:4 September
1607:16 November
1439:Ian Hickson
1211:Ian Hickson
1164:16 February
1094:16 February
982:28 December
952:Quirks mode
739:4.01 Strict
603:Firefox 3.6
599:Firefox 3.5
329:favicon.ico
199:DOM Level 2
183:Ian Hickson
152:web browser
77:Ian Hickson
3891:Test items
3876:Acid tests
3870:Categories
3726:Typography
3000:Timberwolf
2995:TenFourFox
2940:Kazehakase
2930:Ghostzilla
2799:Opera Mini
2733:DuckDuckGo
2622:GNU IceCat
2392:Encryption
2344:JavaScript
2299:Extensions
2125:25 January
2073:9 November
1971:9 February
1893:. Bugzilla
1744:9 February
1661:9 February
1634:9 February
1602:Maximum PC
1255:9 February
1195:9 February
1133:9 February
963:References
850:ECMAScript
773:ECMAScript
570:March 2019
259:JavaScript
255:ECMAScript
195:ECMAScript
193:, such as
164:JavaScript
162:(DOM) and
125:2008-03-03
99:Commercial
90:.acidtests
3845:Shakedown
3460:test card
3279:Line Mode
3103:Google TV
3059:SpaceTime
3054:NetCaptor
3049:NeoPlanet
2935:IceDragon
2910:Classilla
2743:Lunascape
2738:Konqueror
2699:GNOME Web
2668:SeaMonkey
2663:Pale Moon
2627:LibreWolf
2578:ungoogled
2568:Supermium
2421:WebSocket
2380:Protocols
2359:IndexedDB
2294:Bookmarks
2275:protocols
2272:standards
1961:Microsoft
1927:Microsoft
947:HTML5test
675:Criticism
648:from the
637:Microsoft
607:Firefox 4
595:Firefox 3
211:data URIs
3770:3DBenchy
3706:ImageNet
3350:Category
3304:Skweezer
3299:Netscape
3224:Deepfish
3168:xombrero
2985:Swiftfox
2915:Conkeror
2871:SalamWeb
2866:Rockmelt
2779:Ladybird
2748:NetFront
2673:Waterfox
2658:K-Meleon
2653:Basilisk
2558:Sleipnir
2468:Chromium
2287:Features
2269:Features
2119:Archived
2099:21 March
2093:Archived
2067:Archived
2046:Archived
2027:Archived
2008:Archived
1989:Archived
1965:Archived
1937:15 April
1931:Archived
1846:archived
1774:30 March
1768:Archived
1686:Archived
1574:28 March
1543:28 March
1537:Archived
1512:26 March
1506:Archived
1475:30 March
1453:24 April
1447:Archived
1423:30 March
1417:Archived
1390:Archived
1360:Archived
1333:Archived
1312:30 April
1306:Archived
1285:29 April
1249:Archived
1219:Archived
1189:Archived
1158:Archived
1127:Archived
1088:Archived
906:See also
622::visited
420:OpenType
413:TrueType
403:and the
331:gives a
115:Launched
3558:PM 5644
3554:PM 5544
3550:PM 5540
3546:PM 5538
3411:Pangram
3309:Skyfire
3264:IBrowse
3249:HotJava
3244:Gazelle
3194:Arachne
3123:OmniWeb
3113:Mercury
3093:Dolphin
3034:Deepnet
2876:Sputnik
2861:Redcore
2794:NetSurf
2612:Firefox
2583:Vivaldi
2538:Puffin
2513:Maxthon
2488:Coc Coc
2397:Cookies
1875:7 April
1852:8 April
1598:Pcgamer
1396:4 March
1366:4 March
1339:4 March
1329:"Acid3"
1225:3 April
1011:4 March
901:scripts
816:Unicode
806:Unicode
560:updated
541:Firefox
325:favicon
294:Unicode
209:), and
191:Web 2.0
123: (
56:English
3324:WinWAP
3319:Vision
3289:MSN TV
3284:Mosaic
3274:KidZui
3239:ELinks
3214:Charon
3204:Blazer
3143:Shiira
3133:Origyn
3076:-based
3074:WebKit
3017:-based
3015:MSHTML
2980:Strata
2960:Minimo
2955:MicroB
2925:Galeon
2905:Camino
2900:Beonex
2893:-based
2851:Citrio
2846:Beaker
2839:-based
2720:engine
2718:Multi-
2694:Safari
2687:-based
2685:WebKit
2646:Gecko
2632:Midori
2617:Floorp
2605:-based
2593:Yandex
2563:SRWare
2527:Mobile
2508:Falkon
2498:Dooble
2493:Comodo
2456:-based
2443:Active
2416:WebRTC
2369:WebGPU
2177:7 June
1692:6 July
1655:WebKit
1628:WebKit
1504:.org.
1502:WebKit
1279:WebKit
1031:GitHub
810:UTF-16
522:WebKit
518:Presto
505:WebKit
493:WebKit
435:Base64
317:Fennec
238:Safari
225:(W3C)
219:CSS2.1
172:render
136:Online
3820:Lenna
3810:GTUBE
3774:Acid
3763:Other
3602:Quine
3537:ETP-1
3229:Dillo
3199:Arena
3189:Amaya
3184:abaco
3177:Other
3148:Steel
3138:QtWeb
3098:Fluid
3083:Arora
2950:Lotus
2891:Gecko
2881:Torch
2856:Flock
2837:Blink
2784:Links
2762:Other
2709:Orion
2648:forks
2603:Gecko
2588:Whale
2533:Otter
2523:Opera
2483:Brave
2478:Avast
2454:Blink
2364:WebGL
1063:7 May
932:Acid2
928:Acid1
862:XHTML
820:UTF-8
702:from
669:Blink
501:Opera
485:Batik
428:glyph
176:Acid2
144:Acid3
88:acid3
62:Owner
22:Acid3
3716:List
3688:List
3579:UEIT
3360:List
3209:Cake
3158:Uzbl
3153:surf
3108:Iris
3088:BOLT
2975:Pogo
2945:Kylo
2789:Lynx
2774:Flow
2704:iCab
2553:Silk
2503:Epic
2411:OCSP
2387:HTTP
2322:HTML
2179:2013
2153:2011
2127:2011
2101:2010
2075:2010
1973:2010
1939:2008
1899:2018
1877:2010
1854:2010
1825:2011
1803:2010
1776:2008
1746:2010
1724:2009
1694:2009
1663:2010
1657:.org
1636:2010
1630:.org
1609:2009
1576:2008
1545:2008
1514:2008
1477:2008
1455:2008
1425:2008
1398:2008
1368:2008
1341:2008
1314:2009
1287:2009
1281:.org
1257:2010
1227:2008
1197:2010
1166:2008
1135:2010
1096:2008
1065:2018
1038:2019
1013:2007
984:2007
930:and
838:SMIL
826:HTML
818:5.0
808:5.0
737:HTML
725:HTTP
614:WOFF
520:and
503:and
439:HSLA
416:font
296:, …)
290:SMIL
279:HTML
267:HTTP
249:Test
240:and
227:CSS3
215:CSS2
197:and
142:The
92:.org
65:The
47:test
3064:ZAC
3029:AOL
2804:w3m
2769:eww
2728:360
2473:Arc
2339:DOM
2334:CSS
897:or
844:SVG
832:SVG
800:DOM
794:DOM
788:CSS
782:DOM
767:DOM
749:DOM
743:DOM
731:DOM
659:In
650:PDC
409:W3C
333:404
207:XML
83:URL
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