Tool directory

All accessibility tools

Every live checker in one place. Switch tools anytime—your caption and alt text can persist in the same browser session on social checkers.

Start with social checker Methodology

Quick answer

Accessible Content Preflight offers free, browser-based preflight checkers for social posts, measured contrast, screen reader preview, video captions, batch CSV review, and public website scanning. Pick a tool below—no account required for local checks.

Flagship workspace
Social Media Checker
Platform-neutral preflight for captions, alt text, measured contrast, screen reader preview, optional AI image review, and publishing readiness.
- • All platforms in one workspace
- • Local preflight at zero API cost
- • Optional AI on your click only
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Instagram preflight
Instagram Accessibility Checker
Prepare Instagram alt text, accessible captions, readable hashtags, and graphic contrast before you post. Not affiliated with Meta or Instagram.
- • Instagram publishing checklist
- • Alt text & caption preflight
- • Carousel-aware guidance
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Facebook preflight
Facebook Accessibility Checker
Preflight Facebook photo alternative text, captions, and feed post accessibility before publishing. Independent tool—not affiliated with Meta.
- • Photo alt-text guidance
- • Feed post readability checks
- • Publishing copy package
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LinkedIn preflight
LinkedIn Accessibility Checker
Professional feed post preflight: alt text, captions, hashtags, and measured contrast before LinkedIn publishing.
- • Professional post readiness
- • Feed image alt-text review
- • LinkedIn checklist & guidance
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X preflight
X Accessibility Checker
Prepare X image descriptions (up to the documented 1,000-character limit), captions, and hashtags before you post. Not affiliated with X Corp.
- • 1,000-character image description awareness
- • Hashtag & caption preflight
- • X publishing checklist
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Visual accessibility
Image Contrast Checker
Measure WCAG contrast ratios in your browser. Sample colors from images or enter hex values—numeric measurement, not certification.
- • WCAG relative luminance math
- • Image pixel sampling
- • Accessible color suggestions
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Listening experience
Screen Reader Preview
Approximate reading order, hashtag noise, and optional browser speech—local preview only, not an NVDA/JAWS/VoiceOver emulator.
- • Reading order approximation
- • Optional speech playback
- • Accessible draft suggestions
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Prerecorded video
Video Accessibility Checker
Video accessibility preflight: timestamped captions, transcript review, SRT/WebVTT export, and optional sampled-frame visual guidance — human review recommended.
- • MP4/WebM upload with local preview
- • One transcription pass for cues + exports
- • Optional speaker detection & visual review
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Bulk preflight
Batch Accessibility Checker
Import up to 100 social posts via CSV, optionally match images from ZIP, run local accessibility checks at zero API cost, and run AI image review only for items you select.
- • CSV + optional ZIP import in-browser
- • Shared Phase 1–5 engines per row
- • Controlled AI queue with session limits
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Public URL scanning
Website Accessibility Scanner
Scan public pages with server-side Playwright rendering and axe-core WCAG checks. Single-page or limited same-origin crawl with human-review checklist and optional AI fix guidance.
- • JavaScript-rendered page support
- • WCAG A/AA automated findings
- • No compliance certification claims
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Need video captions? Use the Video Accessibility Checker. Return to homepage.