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Find typographic errors in copy, HTML or CSS, such as straight quotes, fake dashes and tight line-height

Type crimes lintFreeFor designers, developers and writers

25/day

free runs a day, no sign-in.

Before: what you give it

The example input, as typed in. You paste text, CSS, markup or notes.

text:
  <style>
  body { font-family: Georgia; line-height: 1.1; text-align: justify; }
  h1 { font-family: "Playfair Display"; }
  .tag { text-transform: uppercase; font-size: 0.8em; }
  </style>
  <p>She said "it's fine."  Then she left -- pages 10-20 cover it.</p>
  <p>THIS WHOLE SENTENCE IS SET IN CAPITALS FOR NO GOOD REASON AT ALL.</p>
kind: html

After: what comes back

The first lines of a real run on that input. Nothing here is edited by hand.

Type crimes lint (html): 11 findings
[high] line 2 tight-body-leading: line-height 1.1 on body text. Under 1.2 the descenders touch the next line's ascenders in running text. Fix: Use 1.4 to 1.6 for running text. Tight leading is for large headlines only. (body { font-family: Georgia; line-height: 1.1; text-align: justify; })
[medium] line 2 justify-without-hyphens: Justified text with no automatic hyphenation. Browsers then stretch word spaces, leaving gaps and rivers. Fix: Add hyphens: auto (and a lang attribute on <html>), or use text-align: left. (body { font-family: Georgia; line-height: 1.1; text-align: justify; })
[medium] line 4 fake-small-caps: Uppercase text at a reduced size imitates small caps. The strokes get thinner than the surrounding text. Fix: Use font-variant-caps: all-small-caps with a font that has real small caps, or accept full capitals with a little letter-spacing. (.tag { text-transform: uppercase; font-size: 0.8em; })
... full output on the tool page

What you get

Findings with rule, severity, line, excerpt, fix and the book or convention each traces to

What it cannot do

Static checks only; code and pre blocks are skipped, and thresholds like the 1.2 line-height floor are conventions.

Who it is for

  • Designers
  • Developers
  • Writers

Free and Pro

Free25 runs a day per IP address, up to 100,000 characters a run.
ProNo daily limit, 300 requests a minute, up to 200,000 characters a run.

What each plan includes

Use it from your assistant

The tool is called type_crimes_lint. Connect the server once, then ask for it by name or just describe the job. Install steps for each app.

claude mcp add --transport http designers https://designers.allthepossibles.com/mcp
curl -X POST https://designers.allthepossibles.com/api/type-crimes-lint -H 'content-type: application/json' -d '{"text":"<style>\nbody { font-family: Georgia; line-height: 1.1; text-align: justify; }\nh1 { font-family: \"Playfair Display\"; }\n.tag { text-transform: uppercase; font-size: 0.8em; }\n</style>\n<p>She said \"it'\''s fine.\"  Then she left -- pages 10-20 cover it.</p>\n<p>THIS WHOLE SENTENCE IS SET IN CAPITALS FOR NO GOOD REASON AT ALL.</p>","kind":"html"}'

Try it here

The form starts with the same example input, so you can run it first and then swap in your own.

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