Markdown Accessibility and Alt Text Checker

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. 来源：https://prompts.chat/prompts/cmvan99yi000ml6067hv94yay

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". 来源：https://prompts.chat/prompts/cmv3hwc18000gig06d3n01f6b

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. 来源：https://prompts.chat/prompts/cmvt86z5o0011lb07toi3qqod

Turns a git log in Conventional Commits format into a ready-to-paste Keep a Changelog release section - Added, Changed, Deprecated, Removed, Fixed, Security - with scopes, issue and commit links and a breaking-changes block. Flags breaking changes without migration notes, non-conforming and fixup commits, reverts and duplicates, and suggests the next SemVer version. Includes an offline stdlib Python builder with --self-test. 来源：https://prompts.chat/prompts/cmw0d6cti0005l508bq5z74gr