421:, who later became a userscript developer. By May 2005, there were approximately 60 general and 115 site-specific userscripts distributed for Greasemonkey. In July 2005, serious vulnerabilities were found in Greasemonkey by Mark Pilgrim, and fixed in the 3.5 version of Greasemonkey. During this time, a Greasemonkey compiler was also developed for converting a userscript into a standalone Firefox extension. Greasemonkey was initially met with complaints by publishers for its ability to block ads. However, this criticism shifted its focus to other addons starting with the 2006 release of
136:
438:"most popular scripts" as listed by the site had nominal install counts of zero. Over the following year spam scripts became more common, server downtime increased and the install count bug remained. With no further communication by Andrews, userscript writers described the site as neglected and the official Greasemonkey site removed its front page link. In response, script writers and other developers began working on the
230:
40:
499:. Compared to writing a full-fledged Firefox extension, user scripting is a very modest step up in complexity from basic web programming. However, Greasemonkey scripts are limited due to security restrictions imposed by Mozilla's XPCNativeWrappers For example, Greasemonkey scripts do not have access to many of Firefox's components, such as the download manager,
1340:
503:
or its main toolbars. Additionally, Greasemonkey scripts run per instance of a matching webpage. Because of this, managing lists of items globally is difficult. However, script writers have been using cookies, and
Greasemonkey even offers APIs such as GM_getValue and GM_setValue to overcome this.
437:
In 2010, the last known admin Jesse
Andrews posted that the site was in maintenance mode due to lack of time and asked for a new maintainer to volunteer. Nevertheless, he remained the sole admin of the site until a discussion about install counts began on 1 April 2013. Prior to this, many of the
462:
interface. Scripts are generally written to be either page-specific or domain-specific (applying to all pages within a domain) but may also be tagged to apply to all domains for global browser enhancements. Users of
Greasemonkey can write or download scripts and save them to their own personal
433:
To accommodate the growing number of scripts, userscripts.org was founded by Britt
Selvitelle and other members of the Greasemonkey community in late 2005. Userscripts.org was open sourced in 2007 but the site later moved away from this code base. As the main script repository listed on
445:
In May 2014, userscripts.org became inaccessible on port 80, prompting users to access it on port 8080 instead. In August 2014, the site was shut down completely. Most of its scripts were backed up to the static mirror userscripts-mirror.org where they can now be found.
404:
Greasemonkey can be used for customizing page appearance, adding new functions to web pages (for example, embedding price comparisons within shopping sites), fixing rendering bugs, combining data from multiple web pages, and numerous other purposes.
413:
The
Greasemonkey project began 28 November 2004, written by Aaron Boodman. Boodman was inspired to write Greasemonkey after looking at a Firefox extension designed to clean up the interface of
300:
466:
Greasemonkey scripts can modify a webpage in any way that JavaScript allows, with certain
Greasemonkey security restrictions. Scripts can also access other web pages and
1375:
865:
401:
The changes made to the web pages are executed every time the page is viewed, making them effectively permanent for the user running the script.
532:
will meet with
Greasemonkey's built in update checker. As of July 2019, the Greasemonkey project lists three recommended user script hostings:
742:
359:
907:
842:
802:
484:.user.js, and Greasemonkey offers to install any such script when a URL ending in that suffix is requested. Greasemonkey scripts contain
1370:
892:
619:
1204:
705:
583:
463:
library. When users visit a website matching a script in their personal script library, Greasemonkey invokes the relevant scripts.
732:
495:
Writing a
Greasemonkey script is similar to writing JavaScript for a web page, with some additional allowances such as cross-site
1153:
492:
URL used to differentiate identically named scripts, and URL patterns for which the script is intended to be invoked or not.
24:
249:
1084:
547:
is used by default. Files may follow the naming scheme with the ".user.js" suffix for the URL serving as an install link.
115:
89:
1257:
624:
959:
352:
326:
1344:
599:
244:
157:
543:
service operated by GitHub where simple files are hosted. Files can be pasted into a web form and saved.
1380:
459:
1132:
1034:
582:
package. However, this extension is not fully compatible as of release 2.15.1, since some
Greasemonkey
991:
345:
869:
1261:
595:
571:
184:
788:
911:
850:
806:
471:
395:
387:
376:
321:
316:
1238:
759:
738:
579:
575:
383:
1216:
335:
295:
290:
196:
189:
164:
488:
which specifies the name of the script, a description, resources required by the script, a
554:
439:
418:
380:
1312:
709:
434:
Greasemonkey's official site, userscripts.org accumulated thousands of scripts per year.
135:
667:
496:
474:
169:
1364:
1287:
20:
1157:
803:"[Greasemonkey] greasemonkey for secure data over insecure networks / Sites"
629:
500:
422:
1179:
1012:
649:
603:
477:
request, allowing external content to be merged with the original page content.
467:
272:
267:
262:
201:
1313:"Improvements for GreaseMonkey support · Issue #3238 · qutebrowser/qutebrowser"
933:
124:
1212:
1088:
687:
578:(formerly called Epiphany). The Greasemonkey extension for Web is part of the
455:
149:
57:
47:
591:
521:
489:
280:
254:
1339:
1265:
39:
540:
485:
442:"openuserjs.org", and later greasyfork.org, as an immediate replacement.
414:
394:
content after or before the page is loaded in the browser (also known as
391:
963:
567:
229:
672:
607:
536:
828:
866:"Greasemonkey will blow up business models (as well as your mind)"
544:
529:
550:
Greasy Fork, a site created by the maintainer of userstyles.org.
1353:
843:"mozdev.org – : /pipermail/greasemonkey/2005-July/004379"
513:
212:
153:
893:"Firefox add-on lets surfers tweak sites, but is it safe?"
1113:
1063:
512:
19:
This article is about the software. For the comic, see
1239:"Greasemonkey Port for SeaMonkey – About – OpenUserJS"
992:"Userscripts.org down for good? Here are alternatives"
590:) are unsupported. There are also custom versions for
557:
for the deprecated script repository userscripts.org.
458:
and manipulate the contents of a web page using the
207:
195:
183:
175:
163:
145:
114:
88:
66:
56:
46:
1133:"Introducing Greasy Fork – a user scripts site"
985:
983:
981:
353:
8:
1035:"Please change the official userscript site"
32:
62:Anthony Lieuallen, Johan Sundström, 13 more
1108:
1106:
360:
346:
224:
134:
38:
31:
553:OpenUserJS.org, a site that started as a
454:Greasemonkey user scripts are written in
16:Userscript manager extension for Firefox
1180:"User Script Hosting – GreaseSpot Wiki"
1079:
1077:
1058:
1056:
782:
780:
640:
308:
236:
1376:Free software programmed in JavaScript
934:"Passing the torch on userscripts.org"
7:
906:Selvitelle, Britt (3 January 2007).
789:"Firefox Users Monkey With the Web?"
1131:Barnabe, Jason (19 February 2014).
688:"Version history – GreaseSpot Wiki"
620:List of augmented browsing software
758:Boodman, Aaron (1 February 2010).
14:
1288:"janekptacijarabaci/greasemonkey"
1338:
1085:"Fixing Install Counts – Page 6"
990:Brinkmann, Martin (9 May 2014).
908:"Userscripts.org... Opensource!"
668:"The greasemonkey network graph"
390:that make on-the-fly changes to
228:
1087:. 1 April 2013. Archived from
962:. 1 April 2013. Archived from
566:Greasemonkey is available for
386:. It enables users to install
25:Grease monkey (disambiguation)
1:
1154:"XPCNativeWrapper – MDC Docs"
1041:(Mailing list). 21 April 2014
891:Festa, Paul (24 March 2005).
250:Firefox early version history
829:"Security [LWN.net]"
787:Singel, Ryan (17 May 2005).
95:4.13 / 5 August 2024
706:"Greasemonkey Project Info"
1397:
1371:Free Firefox WebExtensions
625:List of Firefox extensions
18:
760:"40,000 More Extensions!"
516:for the scripts end with
110:
84:
37:
648:boots (23 August 2009).
960:"Fixing Install Counts"
245:Firefox version history
731:Pilgrim, Mark (2005).
72:; 19 years ago
23:. For other uses, see
1347:at Wikimedia Commons
1013:"User Script Hosting"
472:non-domain-restricted
460:Document Object Model
97:; 42 days ago
379:made available as a
1184:wiki.greasespot.net
864:Nivi (8 May 2005).
692:wiki.greasespot.net
650:"Greasespot: Outie"
309:Origins and lineage
287:Features of Firefox
34:
1091:on 3 November 2013
966:on 3 November 2013
914:on 17 January 2007
734:Greasemonkey Hacks
480:Scripts are named
396:augmented browsing
377:userscript manager
322:Mozilla Foundation
317:Netscape Navigator
70:28 March 2005
48:Original author(s)
1343:Media related to
791:. Wired magazine.
744:978-0-596-55357-9
450:Technical details
370:
369:
223:
222:
190:Mozilla extension
1388:
1357:
1356:
1354:Official website
1342:
1328:
1327:
1325:
1323:
1309:
1303:
1302:
1300:
1298:
1284:
1278:
1277:
1275:
1273:
1264:. Archived from
1253:
1247:
1246:
1235:
1229:
1228:
1226:
1224:
1219:on 23 April 2015
1215:. Archived from
1201:
1195:
1194:
1192:
1190:
1176:
1170:
1169:
1167:
1165:
1156:. Archived from
1150:
1144:
1143:
1141:
1139:
1128:
1122:
1121:
1110:
1101:
1100:
1098:
1096:
1081:
1072:
1071:
1060:
1051:
1050:
1048:
1046:
1039:greasemonkey-dev
1031:
1025:
1024:
1022:
1020:
1009:
1003:
1002:
1000:
998:
987:
976:
975:
973:
971:
956:
950:
949:
947:
945:
930:
924:
923:
921:
919:
910:. Archived from
903:
897:
896:
888:
882:
881:
879:
877:
868:. Archived from
861:
855:
854:
853:on 29 July 2005.
849:. Archived from
839:
833:
832:
825:
819:
818:
816:
814:
805:. Archived from
799:
793:
792:
784:
775:
774:
772:
770:
755:
749:
748:
728:
722:
721:
719:
717:
712:on 25 March 2012
708:. Archived from
702:
696:
695:
684:
678:
677:
664:
658:
657:
645:
586:functions (e.g.
527:
519:
362:
355:
348:
237:Related articles
232:
225:
219:
216:
214:
165:Operating system
138:
133:
130:
128:
126:
105:
103:
98:
80:
78:
73:
42:
35:
1396:
1395:
1391:
1390:
1389:
1387:
1386:
1385:
1361:
1360:
1352:
1351:
1336:
1331:
1321:
1319:
1311:
1310:
1306:
1296:
1294:
1286:
1285:
1281:
1271:
1269:
1255:
1254:
1250:
1237:
1236:
1232:
1222:
1220:
1203:
1202:
1198:
1188:
1186:
1178:
1177:
1173:
1163:
1161:
1160:on 28 June 2011
1152:
1151:
1147:
1137:
1135:
1130:
1129:
1125:
1112:
1111:
1104:
1094:
1092:
1083:
1082:
1075:
1062:
1061:
1054:
1044:
1042:
1033:
1032:
1028:
1018:
1016:
1011:
1010:
1006:
996:
994:
989:
988:
979:
969:
967:
958:
957:
953:
943:
941:
932:
931:
927:
917:
915:
905:
904:
900:
890:
889:
885:
875:
873:
863:
862:
858:
841:
840:
836:
827:
826:
822:
812:
810:
809:on 3 March 2020
801:
800:
796:
786:
785:
778:
768:
766:
757:
756:
752:
745:
730:
729:
725:
715:
713:
704:
703:
699:
686:
685:
681:
666:
665:
661:
647:
646:
642:
638:
616:
564:
525:
520:and not with a
517:
510:
497:XMLHttpRequests
452:
431:
429:Userscripts.org
419:Adrian Holovaty
411:
381:Mozilla Firefox
366:
277:
211:
141:
123:
106:
101:
99:
96:
76:
74:
71:
67:Initial release
28:
17:
12:
11:
5:
1394:
1392:
1384:
1383:
1378:
1373:
1363:
1362:
1359:
1358:
1335:
1334:External links
1332:
1330:
1329:
1304:
1279:
1268:on 2 June 2008
1258:"Greasemonkey"
1248:
1243:openuserjs.org
1230:
1205:"Greasemonkey"
1196:
1171:
1145:
1123:
1118:greasyfork.org
1102:
1073:
1068:openuserjs.org
1052:
1026:
1004:
977:
951:
925:
898:
883:
872:on 3 June 2006
856:
834:
820:
794:
776:
750:
743:
723:
697:
679:
659:
639:
637:
634:
633:
632:
627:
622:
615:
612:
580:Web extensions
563:
560:
559:
558:
551:
548:
528:. Support for
509:
506:
451:
448:
430:
427:
410:
407:
368:
367:
365:
364:
357:
350:
342:
339:
338:
332:
331:
330:
329:
324:
319:
311:
310:
306:
305:
304:
303:
298:
293:
288:
285:
284:
283:
278:
276:
275:
270:
265:
259:
257:
252:
239:
238:
234:
233:
221:
220:
209:
205:
204:
199:
193:
192:
187:
181:
180:
177:
173:
172:
170:Cross-platform
167:
161:
160:
147:
143:
142:
140:
139:
120:
118:
112:
111:
108:
107:
94:
92:
90:Stable release
86:
85:
82:
81:
68:
64:
63:
60:
54:
53:
50:
44:
43:
15:
13:
10:
9:
6:
4:
3:
2:
1393:
1382:
1379:
1377:
1374:
1372:
1369:
1368:
1366:
1355:
1350:
1349:
1348:
1346:
1341:
1333:
1318:
1314:
1308:
1305:
1293:
1289:
1283:
1280:
1267:
1263:
1259:
1252:
1249:
1244:
1240:
1234:
1231:
1218:
1214:
1210:
1206:
1200:
1197:
1185:
1181:
1175:
1172:
1159:
1155:
1149:
1146:
1134:
1127:
1124:
1119:
1115:
1114:"Greasy Fork"
1109:
1107:
1103:
1090:
1086:
1080:
1078:
1074:
1069:
1065:
1059:
1057:
1053:
1040:
1036:
1030:
1027:
1015:. 16 May 2014
1014:
1008:
1005:
993:
986:
984:
982:
978:
965:
961:
955:
952:
939:
935:
929:
926:
913:
909:
902:
899:
894:
887:
884:
871:
867:
860:
857:
852:
848:
844:
838:
835:
830:
824:
821:
808:
804:
798:
795:
790:
783:
781:
777:
765:
764:Chromium Blog
761:
754:
751:
746:
740:
736:
735:
727:
724:
711:
707:
701:
698:
693:
689:
683:
680:
675:
674:
669:
663:
660:
655:
651:
644:
641:
635:
631:
628:
626:
623:
621:
618:
617:
613:
611:
609:
605:
601:
597:
593:
589:
585:
581:
577:
573:
569:
562:Compatibility
561:
556:
552:
549:
546:
542:
538:
535:
534:
533:
531:
523:
515:
507:
505:
502:
501:I/O processes
498:
493:
491:
487:
483:
478:
476:
473:
469:
464:
461:
457:
449:
447:
443:
441:
435:
428:
426:
424:
420:
417:, written by
416:
408:
406:
402:
399:
397:
393:
389:
385:
382:
378:
374:
363:
358:
356:
351:
349:
344:
343:
341:
340:
337:
334:
333:
328:
327:Mozilla Suite
325:
323:
320:
318:
315:
314:
313:
312:
307:
302:
301:WebExtensions
299:
297:
294:
292:
289:
286:
282:
279:
274:
271:
269:
266:
264:
261:
260:
258:
256:
253:
251:
248:
247:
246:
243:
242:
241:
240:
235:
231:
227:
226:
218:
210:
206:
203:
200:
198:
194:
191:
188:
186:
182:
178:
174:
171:
168:
166:
162:
159:
155:
151:
148:
144:
137:
132:
131:/greasemonkey
129:/greasemonkey
122:
121:
119:
117:
113:
109:
93:
91:
87:
83:
69:
65:
61:
59:
55:
52:Aaron Boodman
51:
49:
45:
41:
36:
30:
26:
22:
21:Grease Monkey
1381:Web scraping
1345:Greasemonkey
1337:
1320:. Retrieved
1316:
1307:
1295:. Retrieved
1291:
1282:
1270:. Retrieved
1266:the original
1251:
1242:
1233:
1221:. Retrieved
1217:the original
1208:
1199:
1187:. Retrieved
1183:
1174:
1162:. Retrieved
1158:the original
1148:
1136:. Retrieved
1126:
1117:
1093:. Retrieved
1089:the original
1067:
1064:"OpenUserJS"
1043:. Retrieved
1038:
1029:
1017:. Retrieved
1007:
995:. Retrieved
968:. Retrieved
964:the original
954:
942:. Retrieved
937:
928:
916:. Retrieved
912:the original
901:
886:
874:. Retrieved
870:the original
859:
851:the original
846:
837:
823:
811:. Retrieved
807:the original
797:
767:. Retrieved
763:
753:
737:. O'Reilly.
733:
726:
714:. Retrieved
710:the original
700:
691:
682:
671:
662:
653:
643:
630:Tampermonkey
587:
565:
511:
508:User scripts
494:
481:
479:
468:web services
465:
453:
444:
436:
432:
423:Adblock Plus
412:
403:
400:
373:Greasemonkey
372:
371:
176:Available in
58:Developer(s)
33:Greasemonkey
29:
938:Hacker News
813:24 February
604:qutebrowser
588:GM_getValue
215:.greasespot
202:MIT License
1365:Categories
1209:mozdev.org
1138:5 November
1095:5 November
944:24 October
847:mozdev.org
654:Greasespot
636:References
456:JavaScript
150:JavaScript
146:Written in
116:Repository
102:2024-08-05
77:2005-03-28
1256:ianloic.
716:31 August
610:browser.
600:Pale Moon
592:SeaMonkey
576:GNOME Web
526:text/html
522:MIME type
490:namespace
384:extension
1297:23 March
1262:Songbird
1164:16 March
614:See also
596:Songbird
541:pastebin
518:.user.js
486:metadata
482:somename
415:AllMusic
392:web page
336:Category
1189:22 July
895:. CNET.
876:22 July
769:5 March
568:Firefox
475:XMLHTTP
409:History
388:scripts
296:Add-ons
208:Website
197:License
179:English
100: (
75: (
1322:19 May
1317:GitHub
1292:GitHub
1213:mozdev
1045:21 May
1019:21 May
997:21 May
970:21 May
940:. 2010
918:21 May
741:
673:GitHub
608:Falkon
606:, and
574:, and
470:via a
125:github
1272:5 May
1223:5 May
572:Flock
545:HTTPS
530:HTTPS
524:like
375:is a
291:Gecko
1324:2020
1299:2020
1274:2009
1225:2009
1191:2019
1166:2011
1140:2015
1097:2015
1047:2014
1021:2014
999:2014
972:2014
946:2014
920:2014
878:2010
815:2021
771:2023
739:ISBN
718:2011
555:fork
539:, a
537:Gist
514:URLs
440:fork
273:v3.6
268:v3.5
217:.net
185:Type
127:.com
584:API
398:).
213:www
158:CSS
154:XUL
1367::
1315:.
1290:.
1260:.
1241:.
1211:.
1207:.
1182:.
1116:.
1105:^
1076:^
1066:.
1055:^
1037:.
980:^
936:.
845:.
779:^
762:.
690:.
670:.
652:.
602:,
598:,
594:,
570:,
425:.
281:v4
263:v3
255:v2
156:,
152:,
1326:.
1301:.
1276:.
1245:.
1227:.
1193:.
1168:.
1142:.
1120:.
1099:.
1070:.
1049:.
1023:.
1001:.
974:.
948:.
922:.
880:.
831:.
817:.
773:.
747:.
720:.
694:.
676:.
656:.
361:e
354:t
347:v
104:)
79:)
27:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
