Social media accessibility means publishing posts that people who use screen readers, captions, screen magnification or plain-language support can perceive and understand. The platforms set the ceiling: you can’t change how Facebook or TikTok is built. What you control is your content, and that’s where most barriers come from. Images go up without descriptions, videos go out without captions, and hashtags run together into words a screen reader can’t pronounce.
The audience is large. The World Health Organization estimates that 1.3 billion people, about 16% of the world’s population, experience significant disability. Accessible posts reach them, and they work better for everyone else too: people scrolling with the sound off, reading in a second language, or skimming on a small screen.
Is social media accessibility a legal requirement?
For state and local governments in the US, including public colleges and universities, it increasingly is. The Department of Justice’s 2024 rule under Title II of the ADA sets WCAG 2.1 Level AA as the technical standard for public entities’ web content and mobile apps, and that includes the social media posts they publish. Posts made before an entity’s compliance date are excepted. Posts made on or after it are covered.
An interim final rule published in April 2026 moved the compliance dates by one year. Entities serving 50,000 people or more now have until April 26, 2027. Smaller entities and special district governments have until April 26, 2028. The DOJ fact sheet summarizes the rule and its exceptions.
Title II applies only to state and local government entities. No US rule sets a comparable technical standard for private organizations’ social media posts. WCAG itself is a technical standard, not a law: it defines what accessible content looks like, and laws and policies decide who has to meet it.
This section is for information only and isn’t legal advice. WCAG is a technical standard, and legal obligations vary by jurisdiction and organization. Confirm yours with qualified counsel.
Social media accessibility checklist
A screen reader reads a post’s text aloud, announces alt text where an image has it, reads each emoji by its name and reads hashtags as written. Most of the checks below follow from that, so run through them before every post.
- Write in plain language. Keep sentences short, put the key information first and use sentence case. Text in all capitals is harder to read, especially for people with dyslexia or cognitive disabilities, and some screen readers spell all-caps words out letter by letter.
- Capitalize each word in hashtags. Write #AccessibleSocialMedia, not #accessiblesocialmedia. Capitals tell a screen reader where each word starts, and they’re easier for everyone to scan. Put hashtags at the end of the post rather than mid-sentence.
- Use emojis sparingly, and not in the middle of sentences. Each emoji is read by its full name, so three in a row become a long string of words. Avoid emoticons built from punctuation, which screen readers read as symbols. Use Emojipedia to check what each emoji is called.
- Don’t use “fancy” text generators. Bold, italic and script “fonts” pasted into posts are mathematical symbols, not letters. Screen readers skip them or read each character individually, so your post ends up sounding something like this. Stick to the platform’s native text.
- Add alt text to every informative image. Describe what the image means in the post, not every detail it shows, and include any text that appears in the image. Skip “image of”, since screen readers already announce an image. A purely decorative image can go without, but on social media most images carry meaning. Automatic alt text is a fallback, not a substitute, so write alt text that carries meaning yourself.
- Keep text on images readable, and don’t put information only there. Place text on a solid background with enough contrast. WCAG’s contrast minimum of 4.5:1 for normal-size text applies to images of text too. Repeat dates, links and calls to action in the post text, where every reader can reach them.
- Caption every video. The WHO estimates that 430 million people need rehabilitation for disabling hearing loss, and many more watch with the sound off. Review automatic captions before posting, since they misspell names and technical terms. Good captions identify speakers and include meaningful sounds. Where a platform can’t display closed captions, burn open captions into the video. For more on standards, see captions and transcripts.
- Describe what’s shown, not just what’s said. If a video shows information the audio doesn’t mention, such as on-screen text, a chart or a demonstration, narrate it or describe it in the post. For audio-only clips, link a transcript.
- Avoid flashing and long-looping animation. Content that flashes more than three times in any one second can trigger seizures. Looping GIFs are distracting for many people, and viewers often can’t pause them. WCAG asks for a way to pause, stop or hide moving content that lasts more than five seconds, so keep animations short.
What each platform supports
Every major platform now lets publishers add their own image descriptions and captions, but the details differ. Menus and labels change often, so check each platform’s help pages before you train a team on a workflow.
| Platform | Custom alt text | Video captions | Worth knowing |
|---|---|---|---|
| Yes, when posting or by editing afterward | Automatic, or upload an .srt file | Generates alt text if you add none. Review it, and see the Facebook Help Center. | |
| Yes, in the accessibility settings before you share | Automatic captions on video | Alt text applies to images only. Describe key visuals in reels and stories in the caption. | |
| X | Yes, with the +ALT button on each image | Upload an .srt file | Viewers see an ALT badge on described images. See how to add image descriptions. |
| Yes, with “Add alt text” when uploading | Automatic, or upload an .srt file | Review automatic captions before they go live. | |
| YouTube | Not applicable | Automatic, editable, or upload your own | Correct automatic captions before relying on them. See adding captions and subtitles. |
| TikTok | No alt text field for video | Automatic, editable before posting | Describe key visuals in the post caption, and use high-contrast text overlays. |
Make accessibility part of how you publish
In a large organization, social accounts are rarely run by one person. Central brand, regional and departmental teams, agencies and student or volunteer contributors may all post, often through a scheduling platform. A checklist only works when it’s built into that workflow, the same way teams build accessibility into content workflows for the web.
- Put the checklist in your social style guide, so alt text, captions and hashtag casing are part of the standard rather than an extra step.
- Check your scheduling software. Confirm that alt text and caption files survive the trip from the scheduler to each platform, because not every integration passes them through.
- Listen before you post. VoiceOver on iPhone and TalkBack on Android are built in. Hearing a post read aloud once exposes hashtag, emoji and font problems faster than any checklist.
- Assign a reviewer for high-stakes posts, such as emergency notices, deadlines and public health information.
- Brief agencies and contributors. Put the standard in contracts and briefs. For public entities, posts an agency or contractor publishes on your behalf count as your content under Title II.
- Audit on a schedule. Sample recent posts from each account for missing alt text and uncaptioned video, and feed what you find back into training.
Frequently asked questions
Does social media have to meet the ADA?
For state and local governments, posts made on or after their Title II compliance date must meet WCAG 2.1 Level AA, and earlier posts are excepted. Title II doesn’t apply to private businesses, and no federal rule sets a technical standard for their social media posts.
Does every image need alt text?
Every image that conveys information does. A purely decorative image can go without, though on social media that’s rare. If the image contains text, the alt text should include it.
Which social media platforms have the best accessibility features?
Facebook, Instagram, X and LinkedIn all support custom alt text for images, and all the major platforms offer captions for video in some form. The table above shows where they differ. The bigger difference is usually whether publishers use the features at all.
