Facebook preflight
Preflight Facebook photo alternative text, captions, and feed post accessibility before publishing. Independent tool—not affiliated with Meta.
Live workspace
Results update as you edit. Nothing is sent to our servers unless you explicitly run AI image analysis.
Platform checklists update when you switch networks. Caption checks are shared across platforms.
Paste the caption or post text you plan to publish. Checks run locally in your browser.
Used for alt-text checks, contrast sampling, and optional AI review. Maximum 10 MB.
or drag and drop PNG, JPG, JPEG, or WEBP
Local preflight checks on captions and alt-text heuristics run in your browser and are not sent to our server.
Optional AI image analysis is separate and only runs when you choose "Analyze Image with AI."
Your results will appear here
Run local preflight to generate your readiness score, summary counts, and finding-by-finding guidance. Optional AI review appears after you analyze an image.
Measure WCAG contrast in your browser. Does not change your readiness score or call AI.
Color sampling and contrast calculations run in your browser. Image pixels are not sent for contrast measurement.
Opaque colors only. Transparency and overlays are not measured. Gradients and photos may need multiple background samples below.
Contrast ratio
21.00:1
PASS — Normal Text AA
Required for selected type (AA): 4.5:1
No image uploaded
Human review
Not automatic pass/fail—answer honestly before you publish.
Is important meaning conveyed by color alone?
Is text placed over a busy photo, gradient, or texture?
Is critical text small or thin in the image?
Is essential text only inside the image (not in caption)?
Would the message still make sense in grayscale?
Measured contrast plus human review prompts and optional AI observations.
Contrast passed
1
Contrast failed
0
Human review prompts
0
AI observations
0
Not measured as WCAG pass/fail
Measured ratios apply to solid foreground and background colors. This tool supports preflight review, not legal WCAG certification.
Approximate reading order and listening noise—local only, not an emulator.
This is an approximation for accessibility review. Actual output varies by platform, browser, operating system, assistive technology, and user settings. This is not an exact screen reader simulation.
Platform context: facebook (preview logic is not platform-specific yet).
Screen reader preview
Mostly Clear
Noise sources
1
Repeated emojis
No
Fancy Unicode
No
Excess hashtags
No
Duplicate caption/alt
No
Generic link language
No
Preflight reading order — not the platform accessibility tree.
Publish phase
Important items still need attention
Meaningful image description prepared
Automated signal
N/A
Important embedded text reviewed
Automated signal
N/A
Post caption gives context
Automated signal
Needs reviewCaption is empty.
Color contrast reviewed
Automated signal
N/A
Emoji/punctuation reviewed
Automated signal
Not checked
Hashtag readability reviewed
Automated signal
Not checked
Links have meaningful context
Automated signal
Not checked
Video captions reviewed
Automated signal
N/AUse the Video Accessibility Checker (/video-accessibility-checker) for video captions.
Added/reviewed alt text on Facebook
Publishing task
Needs reviewUser confirmation required — this tool cannot verify platform publishing.
Final review before publishing
Publishing task
Needs reviewUser confirmation required — this tool cannot verify platform publishing.
Social platforms update their interfaces regularly. If the option appears in a different location, look for Alt Text, Alternative Text, Accessibility, Edit Photo, or Image Description controls.
Video Accessibility Checker — transcripts, timed captions, and SRT/WebVTT export for MP4/WebM.
Review or provide meaningful alternative text. Do not rely only on automatically generated descriptions when your context matters.
Include important event, date, and offer information accessibly in caption or alt text as appropriate.
Avoid image-only calls to action; provide context in the post caption.
Accessible Content Preflight is an independent tool and is not affiliated with Instagram, Facebook, LinkedIn, or X.
Session-only confirmations—the tool cannot verify actions inside social apps.
Final checklist
Important items still need attention
Controls and labels can vary by post type and app version—confirm in Facebook's publishing UI before you ship.
Generate a client-ready report from checks already run in this browser session. Export does not call AI or upload content.
No AI remediation has been generated for this session. Generate guidance in Fix Lab or the relevant checker tool first.
Run at least one preflight check (caption, contrast, AI, screen reader preview, or video captions) to generate a report.
Edit after applying fixes, then copy for publishing. Re-run preflight if you change content.
Based on current platform help documentation and accessibility best practices.
Facebook supports alternative text for photos in many workflows, and may also generate automatic descriptions.
Yes when the image communicates information that automation may miss or misstate.
No. Copy your content into Facebook when posting.
Platform guidance last reviewed 2026-10-08. UIs change; verify steps in the official app before publishing.
Automated accessibility guidance is not legal advice or certification. Some criteria require human review in the native app.