CSS-VALIDATOR(1)

📦 version 0~20250226, in ubuntu resolute, ubuntu stonking

💅 CSS-VALIDATOR(1) — like, the manual, but make it make sense

okay bestie so this is the page for css-validator, a lil User Command that lives in your terminal and will absolutely tell you if your CSS is a mess or a masterpiece. no gatekeeping here, we're gonna walk through every single flag together 🫶

✨ NAME ✨

css-validator — validate CSS style sheets 💖

🌸 SYNOPSIS 🌸

css-validator [OPTIONS] [URL]*

🦋 DESCRIPTION 🦋

You hand it a CSS style sheet, or an html file, or a url, and it checks whether that thing is valid. That's the whole vibe. It's giving quality control but make it fashion. ✨

👑 OPTIONS 👑

  • -p, --printCSS — prints the validated CSS. heads up though: this only actually works with text output, because with the other output formats the CSS gets printed anyway. iykyk 💅
  • -profile PROFILE, --profile=PROFILE — checks the style sheet against PROFILE. the possible values are: css1, css2, css21, css3, css3svg (this one's the default), svg, svgbasic, svgtiny, atsc-tv, mobile, tv.
  • -medium MEDIUM, --medium=MEDIUM — checks the style sheet using the medium MEDIUM. possible values: all (default), aural, braille, embossed, handheld, print, projection, screen, tty, tv, presentation.
  • -output OUTPUT, --output=OUTPUT — prints the result in whatever format you picked. possible values: gnu, json, soap12, text (default, obvs), ucn, xhtml, xml.
  • -lang LANG, --lang=LANG — prints the result in the language you asked for. possible values: bg, cs, de, el, en (default), es, fa, fr, hi, hu, it, ja, ko, nl, pl-PL, pt-BR, ro, ru, sv, uk, zh-cn. multilingual icon behavior 🌈
  • -warning WARN, --warning=WARN — how loud do you want the warnings, bestie. possible values: -1 (no warning at all), 0, 1, 2 (default — all the warnings, we're spilling everything).
  • -vextwarning true, --vextwarning=true — treats Vendor Extensions as warnings. the possible values for vextwarning are true or false (which is the default).
  • URL — a URL can be either a distant web resource (https://) or a local file (file:/). For a relative path use file:relative/path/to/my_style_sheet.css. For an absolute path use file:/absolute/path/to/my_style_sheet.css.

💀 EXIT STATUS 💀

  • returns 0 on success 🎉
  • returns 1 for fatal errors 😭
  • returns 10 to 110 for the number of errors in the checked Style Sheet 💀

so yeah, the exit code is literally a report card. read it and weep (or slay).

🎀 SEE ALSO 🎀

ngl there isn't a SEE ALSO section in this one — this page is a solo main character. periodt. 👑

k that's the whole thing, bestie — go forth and validate. this lil manual is from css-validator, dated July 2025 🌸 catch you in the group chat 🫶✨

📦 where this page comes from