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Our objective is to document the whole Open Web as well as Mozilla technologies. The table below provides an overview of our progress, as well as links to additional details. If you're just getting started as a contributor, check out our getting started guide.

Section Pages No tags Needs* tags Editorial reviews Technical reviews Outdated pages Dev-doc-needed bugs Documentation requests
API: CSSOM 190 n/a 48 (26%) 64 (34%) 91 (48%) 0 (0%) 7 (4%) 5 (3%)
API: Canvas 132 n/a 0 (0%) 4 (4%) 3 (3%) 10 (8%) 0 (0%) 0 (0%)
API: DOM 789 n/a 87 (12%) 91 (12%) 184 (24%) 15 (2%) 0 (0%) 45 (6%)
API: Device API 101 n/a 34 (34%) 9 (9%) 19 (19%) 0 (0%) 71 (71%) 2 (2%)
API: File API 42 n/a 2 (5%) 7 (17%) 8 (20%) 1 (3%) n/a 6 (15%)
API: Firefox OS APIs 677 3 (1%) 4 (1%) 5 (1%) 79 (12%) 1 (1%) n/a n/a
API: HTML API 505 n/a 132 (27%) 99 (20%) 172 (35%) 4 (1%) 323 (64%) 11 (3%)
API: IndexedDB 106 n/a 2 (2%) 6 (6%) 11 (11%) 0 (0%) 0 (0%) 7 (7%)
API: Intersection Observer 30 n/a 6 (20%) 2 (7%) 3 (10%) 0 (0%) n/a n/a
API: SVG API 156 n/a 111 (72%) 10 (7%) 14 (9%) 0 (0%) n/a 5 (4%)
API: ServiceWorkers 121 n/a 7 (6%) 5 (5%) 17 (15%) 0 (0%) 3 (3%) n/a
API: Web Animations 47 n/a 0 (0%) 1 (3%) 1 (3%) 0 (0%) 11 (24%) 0 (0%)
API: Web Authentication 34 n/a 0 (0%) 31 (92%) 32 (95%) 0 (0%) n/a n/a
API: WebAudio 245 n/a 4 (2%) 26 (11%) 58 (24%) 7 (3%) 7 (3%) 5 (3%)
API: WebCrypto 36 n/a 0 (0%) 0 (0%) 5 (14%) 0 (0%) n/a n/a
API: WebGL 293 n/a 2 (1%) 4 (2%) 9 (4%) 216 (74%) 1 (1%) n/a
API: WebRTC 406 n/a 22 (6%) 180 (45%) 206 (51%) 2 (1%) 26 (7%) 18 (5%)
API: WebSpeech 88 n/a 0 (0%) 0 (0%) 1 (2%) 0 (0%) n/a n/a
API: WebVR 103 n/a 0 (0%) 0 (0%) 0 (0%) 71 (69%) n/a n/a
API: WebWorkers 39 n/a 0 (0%) 1 (3%) 6 (16%) 0 (0%) 4 (11%) 3 (8%)
Credential management 22 n/a 14 (64%) 1 (5%) 15 (69%) 0 (0%) n/a n/a
Accessibility 101 1 (1%) 28 (28%) 10 (10%) 27 (27%) 24 (24%) 12 (12%) 3 (3%)
Addons 670 12 (2%) 5 (1%) 23 (4%) 26 (4%) 6 (1%) 46 (7%) 25 (4%)
WebExtensions 648 1 (1%) 5 (1%) 25 (4%) 35 (6%) 7 (2%) n/a n/a
Apps 9 0 (0%) 0 (0%) 4 (45%) 3 (34%) 0 (0%) 0 (0%) 0 (0%)
Archive 2445 587 (25%) 76 (4%) 14 (1%) 181 (8%) 4 (1%) n/a n/a
CSS 1001 5 (1%) 112 (12%) 147 (15%) 241 (25%) 4 (1%) 125 (13%) 35 (4%)
DevTools 153 65 (43%) 1 (1%) 19 (13%) 18 (12%) 55 (36%) 0 (0%) 32 (21%)
Developer phone guide 983 25 (3%) 13 (2%) 5 (1%) 124 (13%) 12 (2%) n/a n/a
Events 377 122 (33%) 37 (10%) 19 (6%) 56 (15%) 224 (60%) n/a n/a
Firefox 184 13 (8%) 6 (4%) 8 (5%) 12 (7%) 92 (50%) n/a n/a
Game development 74 0 (0%) 3 (5%) 1 (2%) 12 (17%) 35 (48%) 2 (3%) n/a
Glossary 518 2 (1%) 18 (4%) 40 (8%) 107 (21%) 142 (28%) n/a n/a
Guide 31 0 (0%) 11 (36%) 1 (4%) 1 (4%) 16 (52%) n/a n/a
HTML documentation 219 1 (1%) 6 (3%) 36 (17%) 40 (19%) 0 (0%) 6 (3%) 24 (11%)
HTTP 275 5 (2%) 5 (2%) 85 (31%) 73 (27%) 7 (3%) 14 (6%) 6 (3%)
JavaScript 925 0 (0%) 8 (1%) 141 (16%) 148 (16%) 0 (0%) 0 (0%) 64 (7%)
Learning Area 265 0 (0%) 18 (7%) 31 (12%) 37 (14%) 15 (6%) n/a 16 (7%)
Getting started 9 0 (0%) 0 (0%) 0 (0%) 3 (34%) 0 (0%) n/a n/a
Localization 42 5 (12%) 0 (0%) 0 (0%) 2 (5%) 32 (77%) n/a 4 (10%)
MDN meta- 221 4 (2%) 5 (3%) 9 (5%) 14 (7%) 76 (35%) n/a 0 (0%)
Marketplace 10 0 (0%) 0 (0%) 0 (0%) 1 (10%) 7 (70%) n/a n/a
MathML 40 0 (0%) 3 (8%) 0 (0%) 0 (0%) 1 (3%) 7 (18%) 2 (5%)
MozQA 107 25 (24%) 6 (6%) 2 (2%) 4 (4%) 86 (81%) 0 (0%) 143 (134%)
NSPR 362 8 (3%) 1 (1%) 0 (0%) 0 (0%) 1 (1%) n/a n/a
NSS 335 171 (52%) 4 (2%) 21 (7%) 82 (25%) 275 (83%) n/a n/a
SVG 383 5 (2%) 95 (25%) 22 (6%) 39 (11%) 31 (9%) 29 (8%) 21 (6%)
SpiderMonkey 552 8 (2%) 18 (4%) 7 (2%) 208 (38%) 506 (92%) 55 (10%) n/a
Thunderbird 118 36 (31%) 6 (6%) 5 (5%) 17 (15%) 95 (81%) 31 (27%) n/a
WebAssembly 12 0 (0%) 0 (0%) 1 (9%) 2 (17%) 1 (9%) 0 (0%) 0 (0%)
XPCOM 1276 304 (24%) 163 (13%) 1 (1%) 76 (6%) 27 (3%) 22 (2%) n/a
XPath 56 0 (0%) 1 (2%) 1 (2%) 0 (0%) 42 (75%) n/a n/a
XSLT 54 0 (0%) 5 (10%) 0 (0%) 0 (0%) 45 (84%) n/a n/a
Total 16617 1408 1134 1224 2523 2195 802 482

Legend:

  • Red: More than 10% of pages in this area need help with this specific task (such as editorial reviews, etc., see at the top of the table).
  • Yellow: 5%-10% of pages in this area need help with this specific task.
  • Green: Only less than 5% of pages in this area need help with specific task.