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: zstd33
2. Add WebCodecs API29
3. Add support table for CSP 3.0 compliance29
4. Suggestion: MediaRecorder.isTypeSupported supported types/codecs29
5. Add HTTP 103 Early Hints28
6. css/svg property dominant-baseline27
7. Add CSS Color Module Level 5 (color-mix(), color-contrast(), Relative color)25
8. window.onerror - / - particularly mobile browser support24
9. Add WebDriver23
10. Can I use Reporting API23
11. Hyphenation Options22
12. Entries for href values including `tel:1234567` and `sms:1234567`22
13. Add ES7/2016 SIMD21
14. text-wrap21
15. Track support for newly added spec: Dimensions (width/height) in <source> tags20
16. JavaScript: Tail Call Support information missing19
17. I suggest adding statistics for Aural style sheets which contain CSS properties such as "speak....19
18. Priority hints API19
19. CSS3 module "Generated Content for Paged Media" and especially the target-counter function19
20. XSLT Support table19
21. WebExtensions (browser extensions)19
22. WebTransport18
23. + WASM SIMD18
24. TLS ECH (Encrypted Client Hello), formerly known as ESNI (Encrypted Server Name Indication)17
25. Support constructible stylesheets / adoptedStyleSheets17
26. New feature: CSS Typed Object Model (CSS Typed OM)17
27. Page Lifecycle API16
28. device-cmyk css feature16
29. Add CSS Grid Layout Module Level 3 (Masonry!)16
30. Support Intrinsic Size Attribute15
31. border-corner-shape15
32. `content: leader('.');`14
33. Add Media Queries Ranges14
34. Check browser support for displaying MJPEG files. This is a motion JPEG file format that is supporte...13
35. Geo URI scheme13
36. Add beforeinput event13
37. input-security12
38. SVGZ-specific support table since iOS < 4.2 doesn't support it, but does support SVG. Not su...12
39. I suggest support for TransferableObject types (of which there are several) 12
40. Color Fonts including SVG-in-OT fonts12
41. Async iterators / for await of11
42. Soft hyphen: html entity &shy;11
43. webcl?11
44. Track Intl.Segmenter10
45. queueMicrotask support10
46. @font-face descriptors to override font metrics10
47. Add WebRTC insertable streams10
48. Add float: footnote to CSS310
49. New feature request: OCSP must-staple10
50. Add Report-To API (Intervention Reports)10
51. Support for SVG's "shape-rendering" CSS property. 10
52. ElementInternals/form-associated custom element10
53. CSS Box Alignment Module Level 310
54. List support for the window.fetch keepalive option9
55. Cookies: max-age9
56. Add Web Share Level 29
57. Add Web Share Target API9
58. Add caniuse data for Contact Picker API9
59. Add Webassembly Threads / Threaded Webassembly9
60. Progressive JPEGs start to show on pages faster, from low quality and eventually getting their 100% ...9
61. Include `baseline-shift` CSS property9
62. Quota Management API 9
63. Show Support for JSON Modules9
64. CSS3 Speech Module Which browsers support it? See9
65. webM alpha transparency9
66. caniuse : Constructable Stylesheet8
67. SVG viewport-fill-opacity property support8
68. SVG viewport-fill property support8
69. HTMLVideoElement.requestVideoFrameCallback()8
70. Add supported elliptical curves (HTTPS/TLS)8
71. one-time-code8
72. Badging API8
73. HTTP2 Server Push8
74. Support CSS two-value display syntax8
75. Add CSS animation timing function spring()8
76. This regards adding support for the navigator.userAgentData7
77. Support for the frame-ancestors directive7
78. Secure Cookie flag7
79. 'imagesizes' & 'imagesrcset' for <link rel="preload">7
80. Feature: Origin-bound one-time codes delivered via SMS7
81. Tiff image format7
82. User-Agent Client Hints (UA-CH)7
83. Add SVG `use` with external reference7
84. Alt-Svc header browser support info: consider adding7
85. RFC7692 Compression Extensions for WebSocket7
86. autocorrect for input fileds7
87. WebGL extensions7
88. Add `accent-color` property (CSS UI 4)7
89. input[autocomplete] (values besides on/off) 7
90. Please add "isInputPending()"7
91. Fetch Metadata Request Headers6
92. Module Worker support6
93. Add Declarative Shadow DOM6
94. Geofencing API6
95. CSS tag {content: url()}6
96. Add Web Share Target API Level 26
97. Page-margin boxes (@top-center, etc)6
98. Add scroll-padding6
99. Add `enterkeyhint` attribute ("Enter Key Hint")6
100. Cannot see |ImageCapture| entry in the web interface.6
101. Add 'require-sri-for' CSP Directive6
102. Add `multipart/x-mixed-replace`6
103. HTML Modules6
104. CSS 3 property: text-autospace and text-spacing6
105. New feature request: x25519 Key Exchange6
106. WebCrypto Key Discovery6
107. Flag storage that is not available under private mode6
108. MediaStream Image Capture6
109. Add font-palette-values5
110. Please track the various HTTP Set-Cookie options supported by browsers5
111. Embedded color profiles in JPEG images.5
112. Add Eyedropper API to caniuse5
113. Add `text-underline-offset` property5
114. Support individual CSP rules5
115. audio / video autoplay attribute and play function5
116. Bundled HTTP Exchanges5
117. Add ECC certificates5
118. Track support for navigator.getInstalledRelatedApps()5
119. Add info about css user-modify and -webkit-user-modify:read-write-plaintext-only 5
120. Add support tables for document.documentElement.clientWidth5
121. Observable5
122. Feature: A Well-Known URL for Changing Passwords5
123. [WebCryptoAPI] randomUUID5
124. HTTP Strict Transport Security Preload5
125. Accelerated Shape Detection in Images5
126. navigator.isProtocolHandlerRegistered and .unregisterProtocolHandler5
127. mediagroup content attribute, MediaController object, VideoTrackList, AudioTrackList objects5
128. Add autocorrect, autocapitalize, autocomplete attributes5
129. -ms-overflow-style5
130. Adding Khronos gITF 2.0 for 3D models5
131. ::-webkit-file-upload-button4
132. Input Events Level 1 and 24
133. CSS Round Display4
134. Support aria-hidden html property4
135. Web locks4
136. Support the W3 Web Annotation standard (W3C Recommendation)4
137. Arithmetic coded JPEG support4
138. CSS Shaders - 4
139. Add raw sockets API4
140. USDZ file format4
141. New top level domains (TLD)4
142. new CSS trigonometry functions4
143. For printing support for the size:landscape option to tell the browser what page orientation we want...4
144. Add previousSibling and previousElementSibling4
145. Payment Handler API4
146. CSS image() functional notation (e.g. for background-images etc). See 4
147. Screen Capture4
148. Audio codec - xHE-AAC / USAC4
149. JS Self-Profiling API4
150. Add Versatile Video Coding (VVC) … somewhen4
151. Add Cookie Store API4
152. [CSS Level 4 pseudo-class] :user-error4
153. Cache-Control 4
154. Support for Digital Goods API4
155. TCP Fast-Open. Now that Linux kernels enable this by default (and web servers likely won't be ...4
156. allowtransparency4
157. Add support for Trust Tokens API4
158. Add `WebOTP` to list of apis4
159. ECMAscript - static properties3
160. Add System Colors item3
161. Grid-auto-flow3
162. Support for MHTML3
163. ActiveX3
164. Network Service Discovery3
165. add Accessibility Object Model3
166. Add meta "format-detection"3
167. The "auto" value for the dir attribute, added in HTML5 to ease inserting text of unknown d...3
168. Add COLRv13
169. Add Intl.DisplayNames3
170. Add `dynamic-range` media query3
171. Adding Silverlight usage stats3
172. Keyboard Lock3
174. Add Media Session API Coverage Information3
175. add window-inactive pseudo-class3
176. Add <data> element3
177. display: table-caption?3
178. getEventListeners not listed3
179. place-items shorthand for justify and align3
180. SVG sprites with <symbol> and <use>3
181. Add supports() queries on @import3
182. Add support for requestSubmit3
183. Add CSS module script/CSS modules3
184. getTotalLength()3
185. documentMode3
186. Support SVG width/height = auto3
187. Public class properties3
188. Private Click Measurement (PCM)3
189. New browser feature: rest/spread in object literals3
190. Can I Use m4a?3
191. CSS multicol data is mixed with fragmentation3
192. <virtual-scroller>3
193. The !important css thing. It's very !important ;).3
194. Add support for addHitRegion3
195. Graphite font support2
196. [DOM API] `signal` option on EventTarget.protoype.addEventListener2
197. Add "Window Controls Overlay"2
198. track support for the media query feature -ms-high-contrast2
199. WebXR Hand Input Module - Level 12
200. SSML2
201. CanIUse OpenSearch2
202. support destructuring assignment as separate es feature2
203. Add "outline follows border-radius"2
204. Loading Signed Exchanges2
205. Add information about CSS pseudo selector :defined2
206. Track adoption of DOMFrameContentLoaded event2
207. Add information on context-stroke and context-fill2
208. Wildcard "*" support for Access-Control-Allow-Headers/Methods2
209. Add CSS property `caret-shape` and shorthand `caret`2
210. External import maps2
211. Support KV Storage build-in module2
212. Why not suggests 'setPrototypeOf '2
213. Storage Access API2
214. <semantics> element in MathML is not found in caniuse.com2
215. Add Geolocation Sensor2
216. Add Integrated Windows Authentication2
217. Web bundles2
218. Please add ES3 support2
219. add "unicode property escapes"2
220. Global Privacy Control (GPC) "Sec-GPC" HTTP header2
221. Show ANSI escape code for console.log.2
222. add iframe.csp2
223. EventTarget Constructor2
224. dns.resolve2
225. Spatial Navigation support2
226. justify-content: space-around2
227. Add Sanitizer API2
228. MediaDevices.selectAudioOutput2
229. add csp lv2 violation event2
230. Add PNG cursor2
231. Load event support on link nodes to show when a stylesheet is finished loading. See for a discussio...2
232. Add other values of `user-select` property2
233. setTimeout and setInterval callback parameters2
234. Device-Memory Client Hint & navigator.deviceMemory JS API2
235. What about showing support for various link attributes, like "subresource" or "dns-pr...2
236. x-webkit-speech2
237. HTTP immutable responses2
238. Support for CSS3 background-repeat-x and background-repeat-y properties2
239. console.assert(boolean_expression)2
240. Add 'animated GIF as favicon'?2
241. String.prototype.split() with a regex with grouping ( parentheses ).2
242. getFilesAndDirectories2
243. SharedMemory/Atomics2
244. filename*=UTF-8''...2
245. srcset/sizes attribute / picture element support in SVG2
246. Support of sms: and mms: in mobile browsers is not clear2
247. Directional focus navigation: the nav-up, nav-right, nav-down, nav-left properties2
248. CSS touch-action level 2 values2
249. Content-Security-Policy: script-nonce2
250. Input type=email with "multiple" attribute2
251. "GeometryUtils" - part of the CSSOM. Provides much better position information than existi...2
252. Content-Security-Policy: block-all-mixed-content2
253. Touch Icons (apple-touch-icon)2
254. UTF-8 Dingbats2
255. CSS page property (for printing)2
256. Bitmap images inside SVG files. Some browsers that support SVG, will not show embedded bitmap image...2
257. Basic Authentication: AuthName directive2
258. add captureVisibleTab2
259. Support for Canvas isPointInPath()2
260. HTTP Trailers2
261. onerror event on iframe2
262. Can I use X3D?2
263. Add information for the webcal and webcals protocols for subscribing to iCalendars2
264. Add browser support for toggle()2
265. SVG image auto height2
266. Metadata name: MobileOptimized1
267. Edge and IE don't support IndexedDB in web workers1
268. Support for hrefTranslate1
269. browserconfig.xml support info1
270. InsertKey Behaviour Overwrite/Normal Mode1
271. device-pixel-content-box for ResizeObserver1
272. CSS Inline Layout1
273. auto Picture-in-Picture1
274. No information about the `unselectable` HTML attribute.1
275. Information about WavPack audio format1
276. Missing feature: Clipboard API supported mimetypes1
277. Add support information for font metric override descriptors1
278. longdesc attribute support1
279. Input type=range with "multiple" attribute1
280. Metadata name: HandheldFriendly1
281. The xml:space attribute1
282. `from-image` as initial value of `image-orientation`1
283. Add windows-theme media query selector1
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. ie behavior1
288. show support for namespacing; for example <svg: namespace 1
289. Add method1
290. window.localMediaStream is not listed1
291. Please add support for getTimezoneOffset()1
292. Tracking various WebAuthn features1
293. Request: nav-up, nav-down, nav-left, nav-right css3 properties1
294. IETF RFCs1
295. Add support for svg fill-rule1
296. Add `::target-text` (from CSS Pseudo-Elements Module Level 4)1
297. webkit-calendar-picker-indicator1
298. Add WebKit Tap Highlight Color (-webkit-tap-highlight-color)?1
299. background-composite1
300. Streams API: transferable streams1
301. iframe disallowdocumentaccess property1
302. performance.measureMemory()1
303. add onstorage1
304. Feature request: Token Binding Protocol1
305. [HTTP Header] Accept-CH-Lifetime1
306. create @Media Types1
307. Add support for DNS RRs, like HTTPS and SVCB1
308. nested calc() and var()1
309. Can I use windowtext.1
310. Web intents/Web Activities 1
311. roundRect1
312. feature request: video/MP2T1
313. Textarea wrap attribute (off, soft, hard, virtual, physical)1
314. Add ShadowRealm API1
315. Add Container Units aka. Container Relative Lengths1
316. Add Scoped Styles aka. CSS Scoping1
317. Add MathML Core1
318. Add compatibility data for QuickTime video format1
319. Add Notification Triggers1
320. voice-* properties aren't listed1
321. Add CMYK Color Space1
322. Add Web Neural Network (WebNN)1
323. Browser support for RTP streams?1
324. Add Wide Color Gamut in 2D Canvas1
325. I suggest adding information about support for alternate HTTP methods such as PUT and PATCH.1
326. Add the `<model>` element1
327. Add Date.prototype.toTemporalInstant()1
328. Add oklab() and oklch()1
329. line-height support and the differences in rendering between webkit&trident and other engines.1
330. Add font-palette1
331. Add TPG image file format1
332. Window Placement API1
333. Please add more detailed WebRTC features1
334. Suggestion for Which browsers.versions support multiple tbody elements in a single table?1
335. accesskey attribute on non-focusable elements (should cause a click element to fire1
336. bidi algorithm (for right-to-left Unicode characters)1
337. FLoC support1
338. script tag onerror attribute1
339. image-resolution. I've seen this as a good alternative for retina images as opposed to backgro...1
340. Add CSS4 Grid structural selectors1
341. Add `::-webkit-details-marker`1
342. Add: "color" and "background-color" CSS on <option> elements1
343. Add URL Protocol Handler Registration for PWAs1
344. The hanging-punctuation property: Currently unsupported by any browser, but it would be nice to ...1
345. requestPostAnimationFrame browser support?1
346. MediaStream Recording (1
347. E4X: ECMAScript for XML1
348. add RTSP and RTSP 2.0 (Real Time Streaming Protocol)1
349. <meta name="apple-mobile-web-app-capable" content="yes" />1
350. Add `media` attribute for `<meta>` element (for `<meta name="theme-color">`)1
351. Add "specifying a color profile: the `@color-profile` at-rule"1
352. missing HTTP TRACE method1
353. Add entry for DTLS 1.31
354. SameParty cookie attribute1
355. Show which browsers have a native CSV viewer1
356. Support for XPath 2.0 (interesting for a lot of new functions, like base-uri(), matches() etc.)1
357. Can you please add the Stack trace API that exists in V81
358. stroke-linejoin support1
359. stroke-linecap support1
360. Add KeyboardEvent.repeat compatibility info1
361. Support info for the <track> element1
362. Add layout-instability support1
363. Support for Service Worker Life Cycle Events1
364. Add H2 ORIGIN frame support1
365. add aria-required to caniuse, if not already there1
366. aria-current1
367. Add css-timing 1
368. Add: Task Scheduler API Specification 1
369. Add a matrix entyre for opentype-with-cff21
370. Add High Resolution Time Level 31
371. Please list support for event.eventPhase1
372. [Suggestion] display: fullscreen1
373. VTTRegion is not found in caniuse1
374. Support for RegExp Named Capture Groups1
375. Add app-region?1
376. Suggested addition: navigator.cpuClass1
377. online/offline can also be used as events and are not covered by (only boolean property is covered)1
378. Report Retry-After header support1
379. Keyboard Map API1
380. support data suggestion: DOM event constructors ?1
381. date.toLocaleString support tracking plz?1
382. add micropub1
383. https mixed mode1
384. Add page for relative path in HTTP Location1
385. Add support for the HTTP header X-Download-Options1
386. OfflineAudioContext1
387. Add compatibility for FormData1
388. window.watchMedia()1
389. SHA1 certificates1
390. Video media in image contexts1
391. JS add oncuechange1
392. Javascript pseudoprotocol1
393. Chained selectors1
394. Browser support for displaying the unicode block "Combining Diacritical Marks for Symbols"1
395. Support for Unicode and spaces in URL1
396. Please add support for supported x509 extensions for ʜᴛᴛᴘꜱ certificates1
397. Support data for Unicode flag on HTML pattern attribute1
398. HTTP Content-encoding: LZFSE1
399. IPv6 support in web browsers1
400. add ime-mode1
401. Add "Controlling Font Display Per Font-Family via @font-feature-values"1
402. URLSearchParams.prototype.sort1
403. Need full 3gp browser compatibility chart.Does it chrome browser supports 3gp format1
404. Suggestion: support for margin-collapse?1
405. Add `onpagehide` support data1
406. Add: Tracking Preference Expression APIs1
407. Missing computed property names1
408. [HTTP Header] Cross-Origin-Opener-Policy1
409. Character-based alignment in a table column using text-align1
410. SVG symbols in CSS1
411. Add support information for SVG's getIntersectionList1
412. user-modify1
413. [Feature Policy: sub-feature] Sandbox features1
414. Add support for HTTP header X-Permitted-Cross-Domain-Policies1
415. aria-labelledby1
416. What is the browser support for the newly proposed "page-orientation" property?1
417. @top-left @bottom-center ? can you test for compatibility1
418. document type1
419. Request: IPv6 proxy functions (myIpAddressEx and friends)1
420. Add support for mediacapture-output API's sinkID1
421. Add Range.getBoundingClientRect browser support table1
422. Clean up css-touch-action1
423. Document Policies1
424. audio / video .canPlayType(MIMEtype)1
425. DeviceOrientation and DeviceMotion events on insecure origins1
426. Add desynchronized (low latency canvas contexts)1
427. Audio Output Devices API: wd1
428. Drag and Drop API - ghost image with customizable opacity1
429. Add box-suppress1
430. Drag and Drop API - move constraints1
431. Add Support for MPEG-4 Part 2 SP/ASP1
432. Animating SVG paths using CSS1
433. grid-row-gap and grid-column-gap1
434. Add a footnote regarding HTMLAudioElement1
435. Add the Javascript double asterisk power operator (**) to the list of supported features1
436. Add Compression Stream API1
437. add CSS Extensions meant for renaming1
438. rel="ar" support1
439. request support for 'accept-charset'1
440. x-webkit-airplay1
441. Add HTTP_ORIGIN feature1
442. attachEvent event handler missing from CanIUse1
443. DownloadURL1
444. add mouse event positions event.offsetX and event.offsetY1
445. Missing `StorageQuota` support1
446. Add support for CSS3 move-to property1
447. Use of es6 import statements in workers1
448. Add XSL to caniuse1
449. CSS3 new text-transform keywords1
450. step property of input field with type datetime-local and time1
451. please add the onsearch event1
452. Add support for CSS clip property1
453. supported-color-schemes & prefers-color-scheme1
454. <object>.contentWindow Support1
455. reflected-xss missing1
456. Open search autodiscovery1
457. string-set1
458. Refresh1
459. How to show support for font-variation-settings within @font-face?1
460. Add "Named function expressions"1
461. The event handler window.onscroll is missing1
462. event.path1
463. baseline-middle1
464. Please add JavaScript string functions trimStart, trimEnd, trimRight, trimLeft1
465. Support for calc() in polygon and other shapes1
466. SHA2 certificates1
467. column combination1
468. Internationalized Domain Name1
469. Add CSS Custom Highlight API1