Can I use...

Feature suggestion list

This list shows all suggested support table features based on GitHub issues. The vote count is based on total thumbs up (👍) reactions for each issue. The list is updated every hour.

1. HTTP content-encoding: zstd31
2. Add lab() and lch() from CSS Color Module Level 428
3. Suggestion: MediaRecorder.isTypeSupported supported types/codecs28
4. Add support table for CSP 3.0 compliance28
5. css/svg property dominant-baseline24
6. Add HTTP 103 Early Hints24
7. window.onerror - / - particularly mobile browser support24
8. form input property "valueAsNumber"23
9. Can I use Reporting API22
10. Add WebDriver22
11. Add ES7/2016 SIMD21
12. Entries for href values including `tel:1234567` and `sms:1234567`21
13. text-wrap21
14. Add CSS Color Module Level 5 (color-adjust(), color-mix(), color-contrast())20
15. Hyphenation Options19
16. JavaScript: Tail Call Support information missing19
17. Priority hints API18
18. I suggest adding statistics for Aural style sheets which contain CSS properties such as "speak....18
19. CSS3 module "Generated Content for Paged Media" and especially the target-counter function18
20. Track support for newly added spec: Dimensions (width/height) in <source> tags18
21. XSLT Support table17
22. New feature: CSS Typed Object Model (CSS Typed OM)17
23. TLS ECH (Encrypted Client Hello), formerly known as ESNI (Encrypted Server Name Indication)17
24. WebExtensions (browser extensions)16
25. Support constructible stylesheets / adoptedStyleSheets16
26. Support Intrinsic Size Attribute15
27. Page Lifecycle API15
28. Add CSS Grid Layout Module Level 3 (Masonry!)15
29. border-corner-shape15
30. device-cmyk css feature15
31. Add Media Queries Ranges14
32. Add hwb() CSS function14
33. `content: leader('.');`13
34. Geo URI scheme13
35. + WASM SIMD13
36. Check browser support for displaying MJPEG files. This is a motion JPEG file format that is supporte...13
37. Add beforeinput event13
38. text-security missing in list of features12
39. Color Fonts including SVG-in-OT fonts12
40. I suggest support for TransferableObject types (of which there are several) 12
41. SVGZ-specific support table since iOS < 4.2 doesn't support it, but does support SVG. Not su...12
42. Async iterators / for await of11
43. webcl?11
44. WebTransport11
45. Soft hyphen: html entity &shy;11
46. Add Report-To API (Intervention Reports)10
47. CSS Box Alignment Module Level 310
48. @font-face descriptors to override font metrics10
49. queueMicrotask support10
50. Add caniuse data for Contact Picker API9
51. Include `baseline-shift` CSS property9
52. ElementInternals/form-associated custom element9
53. Add WebRTC insertable streams9
54. List support for the window.fetch keepalive option9
55. Add float: footnote to CSS39
56. Please add iFrame element contentWindow property9
57. Cookies: max-age9
58. CSS3 Speech Module Which browsers support it? See9
59. Add Web Share Target API9
60. New feature request: OCSP must-staple9
61. Progressive JPEGs start to show on pages faster, from low quality and eventually getting their 100% ...9
62. Quota Management API 9
63. Support for SVG's "shape-rendering" CSS property. 9
64. HTTP2 Server Push8
65. Add CSS animation timing function spring()8
66. Add Web Share Level 28
67. Add supported elliptical curves (HTTPS/TLS)8
68. Badging API8
69. SVG viewport-fill-opacity property support8
70. SVG viewport-fill property support8
71. caniuse : Constructable Stylesheet8
72. webM alpha transparency8
73. Secure Cookie flag7
74. Support for the frame-ancestors directive7
75. This regards adding support for the navigator.userAgentData7
76. 'imagesizes' & 'imagesrcset' for <link rel="preload">7
77. Alt-Svc header browser support info: consider adding7
78. Support CSS two-value display syntax7
79. Add support for the __Host- and __Secure-7
80. HTMLVideoElement.requestVideoFrameCallback()7
81. User-Agent Client Hints (UA-CH)7
82. WebGL extensions7
83. RFC7692 Compression Extensions for WebSocket7
84. Add SVG `use` with external reference7
85. autocorrect for input fileds7
86. input[autocomplete] (values besides on/off) 7
87. Track Intl.Segmenter7
88. Feature: Origin-bound one-time codes delivered via SMS7
89. Show Support for JSON Modules7
90. Please add "isInputPending()"7
91. one-time-code7
92. Add scroll-padding6
93. HTML Modules6
94. CSS 3 property: text-autospace and text-spacing6
95. Cannot see |ImageCapture| entry in the web interface.6
96. CSS tag {content: url()}6
97. Add 'require-sri-for' CSP Directive6
98. Fetch Metadata Request Headers6
99. Add save-data client hint6
100. Add `accent-color` property (CSS UI 4)6
101. New feature request: x25519 Key Exchange6
102. Add `multipart/x-mixed-replace`6
103. Module Worker support6
104. WebCrypto Key Discovery6
105. Add `enterkeyhint` attribute ("Enter Key Hint")6
106. MediaStream Image Capture6
107. Flag storage that is not available under private mode6
108. Add Webassembly Threads / Threaded Webassembly6
109. Geofencing API6
110. Add isSecureContext feature to list5
111. Add Web Share Target API Level 25
112. Add Declarative Shadow DOM5
113. Please track the various HTTP Set-Cookie options supported by browsers5
114. audio / video autoplay attribute and play function5
115. Add font-palette-values5
116. Observable5
117. Page-margin boxes (@top-center, etc)5
118. Accelerated Shape Detection in Images5
119. mediagroup content attribute, MediaController object, VideoTrackList, AudioTrackList objects5
120. Adding Khronos gITF 2.0 for 3D models5
121. Bundled HTTP Exchanges5
122. add support for PerformanceLongTaskTiming5
123. Support individual CSP rules5
124. Embedded color profiles in JPEG images.5
125. Add support tables for document.documentElement.clientWidth5
126. -ms-overflow-style5
127. Track support for navigator.getInstalledRelatedApps()5
128. Feature: A Well-Known URL for Changing Passwords5
129. HTTP Strict Transport Security Preload5
130. Add autocorrect, autocapitalize, autocomplete attributes5
131. Add `text-underline-offset` property5
132. Add info about css user-modify and -webkit-user-modify:read-write-plaintext-only 5
133. [WebCryptoAPI] randomUUID4
134. Payment Handler API4
135. CSS Shaders - 4
136. CSS image() functional notation (e.g. for background-images etc). See 4
137. `Cross-Origin-Embedder-Policy` HTTP header4
138. USDZ file format4
139. Support the W3 Web Annotation standard (W3C Recommendation)4
140. New top level domains (TLD)4
141. Support aria-hidden html property4
142. Cache-Control 4
143. For printing support for the size:landscape option to tell the browser what page orientation we want...4
144. [CSS Level 4 pseudo-class] :user-error4
145. Add raw sockets API4
146. CSS Round Display4
147. ::-webkit-file-upload-button4
148. allowtransparency4
149. Add previousSibling and previousElementSibling4
150. navigator.isProtocolHandlerRegistered and .unregisterProtocolHandler4
151. Add `WebOTP` to list of apis4
152. Arithmetic coded JPEG support4
153. Input Events Level 1 and 24
154. Web locks4
155. Screen Capture4
156. new CSS trigonometry functions4
157. Add Cookie Store API4
158. TCP Fast-Open. Now that Linux kernels enable this by default (and web servers likely won't be ...4
159. Audio codec - xHE-AAC / USAC4
160. Add Versatile Video Coding (VVC) … somewhen4
161. CSS multicol data is mixed with fragmentation3
162. Add meta "format-detection"3
163. Grid-auto-flow3
164. Support for MHTML3
165. Keyboard Lock3
166. getTotalLength()3
167. Network Service Discovery3
168. Add support for addHitRegion3
169. Add support for Trust Tokens API3
170. New browser feature: rest/spread in object literals3
172. add window-inactive pseudo-class3
173. ActiveX3
174. event.ctrlKey3
175. The "auto" value for the dir attribute, added in HTML5 to ease inserting text of unknown d...3
176. Add support for requestSubmit3
177. SVG sprites with <symbol> and <use>3
178. ECMAscript - static properties3
179. Public class properties3
180. place-items shorthand for justify and align3
181. Add Media Session API Coverage Information3
182. <virtual-scroller>3
183. The !important css thing. It's very !important ;).3
184. Support for Digital Goods API3
185. Add data for link rel="alternate"3
186. Add `structuredClone()`3
187. Add ECC certificates3
188. Private Click Measurement (PCM)3
189. Adding Silverlight usage stats3
190. Add `dynamic-range` media query3
191. Support SVG width/height = auto3
192. Add Intl.DisplayNames3
193. documentMode3
194. Add <data> element3
195. display: table-caption?3
196. Why not suggests 'setPrototypeOf '2
197. add captureVisibleTab2
198. for ... of support data2
199. CSS page property (for printing)2
200. Support for Canvas isPointInPath()2
201. Wildcard "*" support for Access-Control-Allow-Headers/Methods2
202. dns.resolve2
203. .getPointAtLength()2
204. justify-content: space-around2
205. Loading Signed Exchanges2
206. Add information for the webcal and webcals protocols for subscribing to iCalendars2
207. Feature suggestion: add "scrollRestoration" for the History API2
208. Add Sanitizer API2
209. <semantics> element in MathML is not found in caniuse.com2
210. SVG image auto height2
211. Show ANSI escape code for console.log.2
212. Add Geolocation Sensor2
213. add "unicode property escapes"2
214. MediaDevices.selectAudioOutput2
215. Add Integrated Windows Authentication2
216. EventTarget Constructor2
217. Add information about CSS pseudo selector :defined2
218. Remote Playback API2
219. Spatial Navigation support2
220. track support for the media query feature -ms-high-contrast2
221. support destructuring assignment as separate es feature2
222. Graphite font support2
223. add Accessibility Object Model2
224. Storage Access API2
225. Please add ES3 support2
226. Tiff image format2
227. getEventListeners not listed2
228. [DOM API] `signal` option on EventTarget.protoype.addEventListener2
229. Add System Colors item2
230. CanIUse OpenSearch2
231. SSML2
232. Support KV Storage build-in module2
233. Add PNG cursor2
234. <input type=file>: ability to modify the selected files via JS2
235. add csp lv2 violation event2
236. add iframe.csp2
237. Track adoption of DOMFrameContentLoaded event2
238. JS Self-Profiling API2
239. External import maps2
240. Content-Security-Policy: script-nonce2
241. Directional focus navigation: the nav-up, nav-right, nav-down, nav-left properties2
242. Input type=email with "multiple" attribute2
243. Support of sms: and mms: in mobile browsers is not clear2
244. What about showing support for various link attributes, like "subresource" or "dns-pr...2
245. Load event support on link nodes to show when a stylesheet is finished loading. See for a discussio...2
246. Add `q` (quarter-millimeters) length unit2
247. console.assert(boolean_expression)2
248. String.prototype.split() with a regex with grouping ( parentheses ).2
249. Bitmap images inside SVG files. Some browsers that support SVG, will not show embedded bitmap image...2
250. InputDeviceCapabilities API2
251. filename*=UTF-8''...2
252. Add browser support for toggle()2
253. srcset/sizes attribute / picture element support in SVG2
254. x-webkit-speech2
255. Add transitionstart event2
256. Add other values of `user-select` property2
257. Can I use X3D?2
258. Add 'animated GIF as favicon'?2
259. Support for CSS3 background-repeat-x and background-repeat-y properties2
260. SharedMemory/Atomics2
261. onerror event on iframe2
262. UTF-8 Dingbats2
263. Basic Authentication: AuthName directive2
264. getFilesAndDirectories2
265. Add new SVG filter effects2
266. Add
267. Content-Security-Policy: block-all-mixed-content2
268. CSS touch-action level 2 values2
269. HTTP Trailers2
270. setTimeout and setInterval callback parameters2
271. Add support for FlyWeb API2
272. Device-Memory Client Hint & navigator.deviceMemory JS API2
273. SVG Foreign Object is a way to combine different XML namespaces elements into the SVG. 2
274. HTTP immutable responses2
275. IETF RFCs1
276. Information about WavPack audio format1
277. Missing feature: Clipboard API supported mimetypes1
278. Please add support for supported x509 extensions for ʜᴛᴛᴘꜱ certificates1
279. CSS Inline Layout1
280. InsertKey Behaviour Overwrite/Normal Mode1
281. Add support for svg fill-rule1
282. What is the browser support for the newly proposed "page-orientation" property?1
283. longdesc attribute support1
284. CMAF1
285. css animation on “content:” - works on chrome, doesn't work on Safari and Firefox1
286. Adding contain-intrinsic-size (suggestion)1
287. Input type=range with "multiple" attribute1
288. Add layout-instability support1
289. Add Compression Stream API1
290. Feature request: Token Binding Protocol1
291. HTMLInputElement API: select support1
292. request support for 'accept-charset'1
293. Add CSS4 Grid structural selectors1
294. Clean up css-touch-action1
295. Document Policies1
296. Add information on context-stroke and context-fill1
297. Add KeyboardEvent.repeat compatibility info1
298. Add desynchronized (low latency canvas contexts)1
299. browserconfig.xml support info1
300. @top-left @bottom-center ? can you test for compatibility1
301. Edge and IE don't support IndexedDB in web workers1
302. Please add support for getTimezoneOffset()1
303. Add method1
304. show support for namespacing; for example <svg: namespace 1
305. x-webkit-airplay1
306. Add Support for MPEG-4 Part 2 SP/ASP1
307. The xml:space attribute1
308. grid-row-gap and grid-column-gap1
309. ie behavior1
310. window.localMediaStream is not listed1
311. Add the Javascript double asterisk power operator (**) to the list of supported features1
312. Add windows-theme media query selector1
313. Tracking various WebAuthn features1
314. Add WebKit Tap Highlight Color (-webkit-tap-highlight-color)?1
315. Intl.NumberFormat - notation (scientific, engineering, etc)1
316. rel="ar" support1
317. background-composite1
318. add onstorage1
319. Request: nav-up, nav-down, nav-left, nav-right css3 properties1
320. script tag onerror attribute1
321. create @Media Types1
322. SameParty cookie attribute1
323. Add `::-webkit-details-marker`1
324. Add: "color" and "background-color" CSS on <option> elements1
325. Add URL Protocol Handler Registration for PWAs1
326. requestPostAnimationFrame browser support?1
327. Browser support for RTP streams?1
328. I suggest adding information about support for alternate HTTP methods such as PUT and PATCH.1
329. E4X: ECMAScript for XML1
330. Add CSS module script/CSS modules1
331. Add `media` attribute for `<meta>` element (for `<meta name="theme-color">`)1
332. Add "specifying a color profile: the `@color-profile` at-rule"1
333. missing HTTP TRACE method1
334. Add entry for DTLS 1.31
335. Show which browsers have a native CSV viewer1
336. FLoC support1
337. Add CSS property `caret-shape` and shorthand `caret`1
338. Can you please add the Stack trace API that exists in V81
339. stroke-linejoin support1
340. stroke-linecap support1
341. add RTSP and RTSP 2.0 (Real Time Streaming Protocol)1
342. line-height support and the differences in rendering between webkit&trident and other engines.1
343. Please add more detailed WebRTC features1
344. voice-* properties aren't listed1
345. Window Placement API1
346. nested calc() and var()1
347. Can I Use m4a?1
348. Can I use windowtext.1
349. Textarea wrap attribute (off, soft, hard, virtual, physical)1
350. bidi algorithm (for right-to-left Unicode characters)1
351. Add `::target-text` (from CSS Pseudo-Elements Module Level 4)1
352. Add the "frame" HTML tag : some browsers don't support it !1
353. webkit-calendar-picker-indicator1
354. Suggestion for Which browsers.versions support multiple tbody elements in a single table?1
355. Streams API: transferable streams1
356. iframe disallowdocumentaccess property1
357. performance.measureMemory()1
358. "GeometryUtils" - part of the CSSOM. Provides much better position information than existi...1
359. image-resolution. I've seen this as a good alternative for retina images as opposed to backgro...1
360. `from-image` as initial value of `image-orientation`1
361. auto Picture-in-Picture1
362. Metadata name: HandheldFriendly1
363. Metadata name: MobileOptimized1
364. Support for hrefTranslate1
365. device-pixel-content-box for ResizeObserver1
366. Web intents/Web Activities 1
367. The hanging-punctuation property: Currently unsupported by any browser, but it would be nice to ...1
368. column-break-after atm only via: -webkit-column-break-after1
369. No information about the `unselectable` HTML attribute.1
370. Add support information for font metric override descriptors1
371. MediaStream Recording (1
372. accesskey attribute on non-focusable elements (should cause a click element to fire1
373. WebXR Hand Input Module - Level 11
374. <meta name="apple-mobile-web-app-capable" content="yes" />1
375. Support for XPath 2.0 (interesting for a lot of new functions, like base-uri(), matches() etc.)1
376. Add CSS Properties and Values API1
377. Touch Icons, per 1
378. TIF / TIFF Image formats1
379. Request: IPv6 proxy functions (myIpAddressEx and friends)1
380. Support for calc() in polygon and other shapes1
381. add CSS Extensions meant for renaming1
382. Character-based alignment in a table column using text-align1
383. Add support for HTTP header X-Permitted-Cross-Domain-Policies1
384. SHA1 certificates1
385. Suggestion: support for margin-collapse?1
386. Add `onpagehide` support data1
387. Add: Tracking Preference Expression APIs1
388. aria-labelledby1
389. Missing computed property names1
390. add "document.contentType"1
391. Missing `StorageQuota` support1
392. Add support for CSS3 move-to property1
393. [HTTP Header] Cross-Origin-Opener-Policy1
394. Node.contains1
395. Add XSL to caniuse1
396. add ime-mode1
397. Add support information for SVG's getIntersectionList1
398. reflected-xss missing1
399. user-modify1
400. [Feature Policy: sub-feature] Sandbox features1
401. support for HTMLTableElement.createTBody1
402. window.watchMedia()1
403. add mouse event positions event.offsetX and event.offsetY1
404. Open search autodiscovery1
405. Add compatibility for FormData1
406. Add "Named function expressions"1
407. Add H2 ORIGIN frame support1
408. Cannot find cancelBubble1
409. Add support for the HTTP header X-Download-Options1
410. IPv6 support in web browsers1
411. Missing a check for msConvertURL() on DragEvent1
412. add aria-required to caniuse, if not already there1
413. Add "Controlling Font Display Per Font-Family via @font-feature-values"1
414. Need full 3gp browser compatibility chart.Does it chrome browser supports 3gp format1
415. Add support for document.queryCommandState1
416. Support XMLDocument1
417. Support for ImageBitmapRendereingContext1
418. SVG symbols in CSS1
419. Javascript pseudoprotocol1
420. aria-label1
421. URLSearchParams.prototype.sort1
422. Add app-region?1
423. JS add oncuechange1
424. CanvasRenderingContext2D.ellipse()1
425. [HTTP Header] Accept-CH-Lifetime1
426. HTTP Content-encoding: LZFSE1
427. aria-current1
428. Add css-timing 1
429. Add: Task Scheduler API Specification 1
430. Add High Resolution Time Level 31
431. min/max-device-width/height1
432. [Suggestion] display: fullscreen1
433. support data suggestion: DOM event constructors ?1
434. Browser support for displaying the unicode block "Combining Diacritical Marks for Symbols"1
435. add micropub1
436. Support for Unicode and spaces in URL1
437. add for...of loops1
438. Support data for Unicode flag on HTML pattern attribute1
439. Support for nested calc expressions in CSS values1
440. Add a matrix entyre for opentype-with-cff21
441. Add Text.wholeText property1
442. The event handler window.onscroll is missing1
443. please add the onsearch event1
444. Add support for CSS clip property1
445. supported-color-schemes & prefers-color-scheme1
446. Add HTTP_ORIGIN feature1
447. <object>.contentWindow Support1
448. Support Data Suggestion: Clients API1
449. document type1
450. Add support for mediacapture-output API's sinkID1
451. Add Range.getBoundingClientRect browser support table1
452. Refresh1
453. How to show support for font-variation-settings within @font-face?1
454. audio / video .canPlayType(MIMEtype)1
455. Javascript - window.onorientationchange 1
456. Add Window.stop1
457. DeviceOrientation and DeviceMotion events on insecure origins1
458. Audio Output Devices API: wd1
459. Drag and Drop API - ghost image with customizable opacity1
460. baseline-middle1
461. Please add JavaScript string functions trimStart, trimEnd, trimRight, trimLeft1
462. Video media in image contexts1
463. Drag and Drop API - move constraints1
464. MediaTrackConstraints1
465. Animating SVG paths using CSS1
466. Support info for the <track> element1
467. Add a footnote regarding HTMLAudioElement1
468. window.event1
469. step property of input field with type datetime-local and time1
470. Add box-suppress1
471. Suggested addition - document.baseURI1
472. date.toLocaleString support tracking plz?1
473. event.path1
474. Please list support for event.eventPhase1
475. Add checking for DataTransfer1
476. Add hreflang attribute usage support for link element1
477. VTTRegion is not found in caniuse1
478. Support for Service Worker Life Cycle Events1
479. Support for RegExp Named Capture Groups1
480. Suggested addition: navigator.cpuClass1
481. online/offline can also be used as events and are not covered by (only boolean property is covered)1
482. Report Retry-After header support1
483. Keyboard Map API1
484. apple-touch-icon1
485. SHA2 certificates1
486. CSS3 new text-transform keywords1
487. https mixed mode1
488. Add page for relative path in HTTP Location1
489. OfflineAudioContext1
490. Support setCapture and releaseCapture for mouse1
491. column combination1
492. Internationalized Domain Name1
493. CaretPosition missing1
494. DownloadURL1
495. string-set1
496. Suggestion: Int64 UInt64 (Firefox only AFAIK)1
497. Use of es6 import statements in workers1
498. attachEvent event handler missing from CanIUse1
499. Chained selectors1