postcss/autoprefixer

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Parse CSS and add vendor prefixes to rules by Can I Use

Stars: 22.2k
Forks: 1.3k
Open beginner issues: 0
Indexed issues: 37
Avg merge: 1d 2h
Merged PRs (30d): 4

Dominant language: JavaScript
License: MIT
Last GitHub push: Sep 19, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

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37 open issues indexed

:placeholder-shown is replaced with -moz-placeholder, although this is outdated Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1533 · 32 comments · 9 reactions · Opened Mar 20, 2025
Support `flex-basis: fill-available(stretch)` Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1519 · 6 comments · Opened Jul 17, 2024
Use `-webkit-linear-gradient` instead of `-webkit-gradient` when the `linear-gradient` contains `var(...)`. Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1515 · 2 comments · Opened Apr 4, 2024
Avoid generating prefixes for browsers that don't support Gradient Midpoints Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

postcss/autoprefixer#1505 · 1 comment · Opened Jan 9, 2024
Support hyphenate-limit-chars Open

caniuse support

Difficulty 4/5 3-5 days Newbie friendliness 35/100

postcss/autoprefixer#1483 · 3 comments · 2 reactions · Opened Oct 14, 2022
`-ms-` vendor prefixes not always removed Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

postcss/autoprefixer#1461 · 1 comment · 1 reaction · Opened May 18, 2022
Consider removing IE and legacy edge prefixing code Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

postcss/autoprefixer#1435 · 7 comments · Opened Nov 16, 2021
-ms-grid... is being added when IE and legacy edge are disabled Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

postcss/autoprefixer#1432 · 3 comments · Opened Nov 11, 2021
Add support for `::marker` Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

postcss/autoprefixer#1418 · 5 comments · 3 reactions · Opened Jul 17, 2021
Warnings show incorrect file info (css string with map file) Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

postcss/autoprefixer#1388 · 3 comments · Opened Jan 20, 2021
Can not find grid areas: intentional-left-blank Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1386 · 6 comments · Opened Jan 12, 2021
Update needed for image-rendering? Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

postcss/autoprefixer#1375 · 4 comments · Opened Nov 20, 2020
autoplace for IE 10/11 not work as expected when use css repeat(2, 50px 100px); Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

postcss/autoprefixer#1369 · 4 comments · Opened Nov 1, 2020
Autoprefixer not generating prefixes for sass with variables Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1355 · 2 comments · 1 reaction · Opened Aug 28, 2020
Add --env to CLI Open

Difficulty 5/5 Over a week Newbie friendliness 15/100

postcss/autoprefixer#1338 · Opened Jul 11, 2020
Support prefixing `line-clamp` Open

support

Difficulty 3/5 1-2 days Newbie friendliness 66/100

postcss/autoprefixer#1322 · 5 comments · 20 reactions · Opened Jun 15, 2020
Move IE Grid documentation into a separate file Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1310 · 27 comments · Opened May 12, 2020
[Bug] Using "last X versions or not dead", nearly not more prefixing. Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1304 · 3 comments · Opened Apr 19, 2020
[Firefox] -moz-read-only is not duplicated with all associated css selectors Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

postcss/autoprefixer#1301 · 20 comments · Opened Apr 14, 2020
Using the grid support causes .map files to contain <no source> in sources list Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1290 · 5 comments · Opened Mar 4, 2020
BEM Modifier class + media query = incorrect grid columns on IE Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

postcss/autoprefixer#1280 · 3 comments · Opened Jan 28, 2020
grid-gap only works if grid-template(-areas) is being used warnings being thrown when mixins are being used Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

postcss/autoprefixer#1275 · 1 comment · Opened Jan 7, 2020
[css-grid] gap should autoprefix to grid-gap Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

postcss/autoprefixer#1274 · 11 comments · 7 reactions · Opened Dec 26, 2019
Ignored `-webkit-`, `-ms-` prefix on `@-moz-document` rules for userstyles Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

postcss/autoprefixer#1271 · 10 comments · Opened Dec 4, 2019
background-image : image-set(...) using css variables, not issue the proper vendor prefix Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1268 · 1 comment · Opened Nov 27, 2019
Shouldn't supports: false disable prefixing inside @supports block? Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1266 · 8 comments · Opened Nov 22, 2019
Autoprefixer computing row and column numbers incorrectly Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

postcss/autoprefixer#1243 · 2 comments · Opened Sep 9, 2019
[css-grid] grid-gap warning needlessly appearing Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

postcss/autoprefixer#1209 · 5 comments · Opened Apr 10, 2019
[css-grid] Autoprefixer outputting wrong IE grid-span syntax Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

postcss/autoprefixer#1181 · 6 comments · Opened Jan 18, 2019
Add Option to only allow Grid in IE by using Areas or Autoplacement Algorithms Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

postcss/autoprefixer#1167 · 19 comments · 2 reactions · Opened Dec 5, 2018
Add Warning when grid-gap could not be Transpiled for IE Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1166 · 16 comments · 1 reaction · Opened Dec 5, 2018
The autoprefixer spans columns and gaps instead of columns including gaps Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

postcss/autoprefixer#1155 · 21 comments · Opened Nov 8, 2018
[css-grid] Inheritance of grid-gap values from similar selectors Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

postcss/autoprefixer#1131 · 1 comment · Opened Sep 24, 2018
Autoprefixer outputting unsafe IE [column/row] [end/span] syntax Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

postcss/autoprefixer#1064 · 10 comments · Opened Jun 18, 2018
[css-grid] Support named lines Open

support

Difficulty 4/5 3-5 days Newbie friendliness 35/100

postcss/autoprefixer#1020 · 7 comments · 11 reactions · Opened Apr 17, 2018
Autoprefixer cannot generate prefix for custom scrollbar Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 25/100

postcss/autoprefixer#821 · 10 comments · 11 reactions · Opened Apr 17, 2017
support font-feature-settings Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

postcss/autoprefixer#40 · 6 comments · Opened Jun 24, 2013

postcss/autoprefixer

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