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.

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Section Pages No tags Needs* tags Editorial reviews Technical reviews Outdated pages Dev-doc-needed bugs Documentation requests
API: CSSOM 120 n/a 51 (43%) 6 (5%) 28 (24%) 23 (20%) 9 (8%) 6 (5%)
API: Canvas 128 n/a 0 (0%) 3 (3%) 4 (4%) 3 (3%) 0 (0%) 0 (0%)
API: DOM 688 n/a 84 (13%) 43 (7%) 135 (20%) 109 (16%) 227 (33%) 52 (8%)
API: Device API 101 n/a 36 (36%) 7 (7%) 15 (15%) 15 (15%) 69 (69%) 3 (3%)
API: File API 35 n/a 2 (6%) 1 (3%) 3 (9%) 0 (0%) n/a 4 (12%)
API: Firefox OS APIs 29 n/a 4 (14%) 0 (0%) 2 (7%) 20 (69%) n/a n/a
API: HTML API 418 n/a 149 (36%) 12 (3%) 67 (17%) 151 (37%) 69 (17%) 13 (4%)
API: IndexedDB 104 n/a 2 (2%) 3 (3%) 6 (6%) 0 (0%) 3 (3%) 16 (16%)
API: SVG API 141 n/a 105 (75%) 1 (1%) 7 (5%) 2 (2%) n/a 5 (4%)
API: ServiceWorkers 120 n/a 7 (6%) 6 (5%) 9 (8%) 3 (3%) 2 (2%) n/a
API: Web Animations 46 n/a 0 (0%) 0 (0%) 1 (3%) 1 (3%) 13 (29%) 0 (0%)
API: WebAudio 216 n/a 4 (2%) 5 (3%) 48 (23%) 7 (4%) 8 (4%) 7 (4%)
API: WebCrypto 20 n/a 0 (0%) 1 (5%) 3 (15%) 0 (0%) n/a n/a
API: WebGL 277 n/a 0 (0%) 2 (1%) 0 (0%) 2 (1%) 1 (1%) n/a
API: WebRTC 276 n/a 18 (7%) 70 (26%) 92 (34%) 27 (10%) 21 (8%) 38 (14%)
API: WebSpeech 88 n/a 0 (0%) 0 (0%) 0 (0%) 49 (56%) n/a n/a
API: WebVR 104 n/a 0 (0%) 0 (0%) 0 (0%) 12 (12%) n/a n/a
API: WebWorkers 38 n/a 1 (3%) 1 (3%) 4 (11%) 1 (3%) 4 (11%) 6 (16%)
IntersectionObserver 30 n/a 4 (14%) 2 (7%) 3 (10%) 0 (0%) n/a n/a
Accessibility 245 1 (1%) 37 (16%) 5 (3%) 14 (6%) 208 (85%) 11 (5%) 5 (3%)
Addons 654 33 (6%) 7 (2%) 15 (3%) 42 (7%) 199 (31%) 55 (9%) 30 (5%)
WebExtensions 593 14 (3%) 0 (0%) 11 (2%) 21 (4%) 181 (31%) n/a n/a
Apps 91 2 (3%) 6 (7%) 3 (4%) 11 (13%) 61 (68%) 0 (0%) 1 (2%)
Archive 2199 549 (25%) 53 (3%) 5 (1%) 229 (11%) 775 (36%) n/a n/a
CSS 891 20 (3%) 199 (23%) 73 (9%) 175 (20%) 8 (1%) 115 (13%) 52 (6%)
DevTools 187 114 (61%) 1 (1%) 3 (2%) 10 (6%) 1 (1%) 0 (0%) 25 (14%)
Events 357 147 (42%) 23 (7%) 6 (2%) 39 (11%) 91 (26%) n/a n/a
Firefox 164 18 (11%) 4 (3%) 4 (3%) 13 (8%) 0 (0%) n/a n/a
Game development 73 0 (0%) 4 (6%) 2 (3%) 7 (10%) 38 (53%) 4 (6%) n/a
Glossary 428 6 (2%) 16 (4%) 6 (2%) 47 (11%) 311 (73%) n/a n/a
Guide 25 1 (4%) 10 (40%) 1 (4%) 1 (4%) 14 (57%) n/a n/a
HTML documentation 208 0 (0%) 13 (7%) 17 (9%) 16 (8%) 3 (2%) 6 (3%) 34 (17%)
HTTP 193 0 (0%) 0 (0%) 34 (18%) 8 (5%) 3 (2%) 12 (7%) 5 (3%)
JavaScript 923 31 (4%) 0 (0%) 83 (9%) 87 (10%) 90 (10%) 0 (0%) 72 (8%)
Learning Area 267 3 (2%) 24 (9%) 23 (9%) 26 (10%) 34 (13%) n/a 21 (8%)
Getting started 9 0 (0%) 0 (0%) 3 (34%) 2 (23%) 0 (0%) n/a n/a
Localization 42 10 (24%) 0 (0%) 1 (3%) 3 (8%) 28 (67%) n/a 3 (8%)
MDN meta- 209 12 (6%) 3 (2%) 4 (2%) 7 (4%) 92 (45%) n/a 0 (0%)
MathML 40 0 (0%) 3 (8%) 0 (0%) 0 (0%) 5 (13%) 0 (0%) 2 (5%)
MozQA 108 27 (25%) 4 (4%) 0 (0%) 4 (4%) 94 (88%) 0 (0%) 95 (88%)
NSPR 362 8 (3%) 1 (1%) 0 (0%) 0 (0%) 358 (99%) n/a n/a
NSS 314 161 (52%) 4 (2%) 14 (5%) 73 (24%) 269 (86%) n/a n/a
SVG 312 6 (2%) 171 (55%) 10 (4%) 73 (24%) 94 (31%) 23 (8%) 24 (8%)
SpiderMonkey 551 9 (2%) 18 (4%) 5 (1%) 208 (38%) 520 (95%) 51 (10%) n/a
Thunderbird 117 39 (34%) 5 (5%) 4 (4%) 5 (5%) 57 (49%) 30 (26%) n/a
WebAssembly 9 0 (0%) 0 (0%) 2 (23%) 0 (0%) 0 (0%) 0 (0%) 0 (0%)
XPCOM 1276 307 (25%) 164 (13%) 1 (1%) 73 (6%) 1120 (88%) 22 (2%) n/a
XPath 55 1 (2%) 0 (0%) 0 (0%) 0 (0%) 2 (4%) n/a n/a
XSLT 55 6 (11%) 3 (6%) 0 (0%) 1 (2%) 12 (22%) n/a n/a
XUL 1209 77 (7%) 44 (4%) 0 (0%) 48 (4%) 493 (41%) 9 (1%) n/a
Total 15145 1602 1284 498 1670 5586 764 519

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.

Document Tags and Contributors

Contributors to this page: jswisher, h4nj4r, fscholz, Sheppy, teoli
Last updated by: jswisher,