Checks READMEs and Markdown docs for accessibility: missing or file-name alt text, heading levels, vague or duplicate link text, bare URLs, empty table headers, color-only instructions, ALL CAPS, and emoji bullets, then writes purposeful alt text and a corrected file. Includes a tested stdlib Python checker for CI.
Audits foreground/background color pairs for WCAG 2.x contrast (AA and AAA for normal and large text), reports ratios and pass/fail, and notes color-blindness risks. Use when checking UI palettes, design tokens, or asking "is this gray-on-white readable?". Includes a stdlib Python contrast checker with --self-test.
Checks SRT and WebVTT subtitle files for broken or overlapping timings, numbering gaps, empty cues, reading speed above a characters-per-second limit, long or extra lines, cues that flash by or linger, unbalanced tags, and sound labels, then rewrites and retimes the problem cues and can shift the whole file. Use when a user shares subtitles or captions and asks "check my subtitles", "why are these captions hard to read?", "fix the timing", or "make these subtitles follow the guidelines".
Checks a Markdown docs folder for links that break readers - relative links to missing or renamed files, anchors that match no heading, duplicate heading anchors, file-name case that only works on macOS, local absolute paths, reference-style links with missing, unused or duplicate definitions, images without alt text and bare URLs. Works offline and lists external URLs to check separately. Includes a stdlib Python checker with --self-test.
Lints .env and .env.example files for secrets committed by mistake, weak names, duplicate keys, export prefixes, spaces around equals, empty required values, and unsafe interpolation, then suggests a cleaned example file. Use when a user asks "is this .env safe to commit?", "why won't dotenv load?", or "diff my .env.example". Includes a tested stdlib Python linter.
