Can I Use
Shares rank 5 of 7 reference documentations by recommenders
People use it to check whether a web feature, CSS property or JavaScript API is supported across browsers, with green boxes marking current support. Critics say its percentage figures can be misleading.
People use it to check whether a web feature, CSS property or JavaScript API is supported across browsers, with green boxes marking current support. Critics say its percentage figures can be misleading.
8 people gave an opinion
- recommend it
- 5
- criticize it
- 3
- approval share
- 63%
Recommended in 4 of 13 months
- November 2025: not recommended
- December 2025: recommended
- January 2026: recommended
- February 2026: not recommended
- March 2026: not recommended
- April 2026: recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: recommended
- September 2026: not recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 5 people recommend itNeeds 10 or more, not met.
- 1.6 recommenders for every criticNeeds 2 to 1 or better, not met.
- Recommended in 4 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Shows feature support across browsers
“There's this really cool site where you can see how well supported a feature is”
Comment from 5 Dec 2025 in “CSS now has an if() conditional function” “Look at caniuse, if you see green boxes on all the current version browsers.”
Comment from 25 Apr 2026 in “Why I'm Done Making Desktop Applications”
What people warn about
Each mark is one comment
Percentage figures can mislead
“The percentage in caniuse means nothing.”
Comment from 7 Jul 2026 in “98% Isn't Much”
Other reference documentations people recommend
The four most recommended other reference documentations, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| Stack Overflow | 235 | 499 | 32% | 12 | 15 yrs39 owners | — |
| MDN Web Docs | 27 | 6 | 82% | 7 | — | Approved |
| HTTP Cats | 20 | 1 | 95% | 1 | 10 yrs3 owners | — |
| Unicode symbol reference page | 8 | 17 | 32% | 1 | — | — |
| Can I UseThis page | 5 | 3 | 63% | 4 | — | — |
What people said
All 8 comments that mention it, newest first. Each links to the original comment.
“caniuse is missing that point”
“You can check any css property's support here”
“The percentage in caniuse means nothing.”
“Look at caniuse, if you see green boxes on all the current version browsers.”
“check “caniuse” to see if all the JS APIs you’re using are available”
“its indispensable for modern web development”
“So it's unclear why the Can I Use website is saying that everybody is working on it.”
“There's this really cool site where you can see how well supported a feature is”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.