Threads accessibility: what creators can check now

Older Threads accessibility guides still describe the app as mobile-only and say creators cannot edit image descriptions. Those launch-era descriptions are stale.

Meta added a logged-in web experience and editable automatically generated alt text in August 2023. The current Threads web experience is on Threads.com and includes posting, feeds, saved posts, and multi-column views. Creators still need to check the content of each post.

Add alt text that explains the image's job

Threads can generate an image description, and Meta says creators can edit it before posting. Treat the generated text as a draft. Check names, numbers, text shown in the image, and the detail that makes the image relevant to the post.

The W3C image guidance recommends describing the information or function of an image, not every visible detail. A photo used to show a damaged product needs the damage and its location. The color of the wall behind it probably does not matter.

For a chart or infographic, a short alt description may not be enough. Put the main numbers and conclusion in the post or a reply where everyone can read them. W3C recommends providing the complete information elsewhere for complex images.

Put important words in the post

Flyers, quote cards, screenshots, and memes often contain text that never appears in the post body. A screen reader user can miss the event date, price, link, or punchline even when the image has a generic description.

Move the important words into the post. If the image contains a short quote, include the quote in the alt text or nearby post text. For a full event flyer, write the event name, date, time, location, and registration link as normal text.

The same rule helps people on small screens, slow connections, and browsers that fail to load the image. It also makes the post easier to quote accurately.

Caption video and check the captions

Add captions whenever spoken words or other audio are needed to understand a video. The W3C caption guidance includes speech and useful non-speech audio, such as a door slamming or music that changes the meaning of the scene.

Automatic captions save time, but review names, product terms, numbers, and punctuation before publishing. If the platform or publishing path does not let you correct captions, add accurate captions to the video file before uploading it.

Do not rely on captions to explain visual action that is never spoken. Add a short spoken description, on-screen explanation, or accompanying post text when the visual action carries the point.

Check contrast and text size in images

Threads does not control the colors inside an image you upload. A pale caption on a bright photo can be unreadable even when the app interface itself has good contrast.

WCAG 2.2 sets a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text. Use those values when you design a quote card, chart, or video caption. Add a solid or darkened background behind text when the image changes underneath it.

Avoid shrinking a paragraph until it fits an image. Put the paragraph in the post and keep the graphic to a heading or one short statement. Actual text can resize and reflow; text baked into an image cannot.

Write links and tags so they make sense aloud

Do not make a bare URL carry the whole call to action. State what opens and why someone would use it: "Read the event schedule" is clearer than "click here."

Use capitalization to separate words in multiword tags, such as #IndieAppDevelopment. Screen readers can interpret the word boundaries more reliably, and the tag is easier to scan visually.

Keep emoji runs short. A screen reader may announce every emoji name. One relevant symbol can work; a row of repeated symbols makes the post take longer to understand.

Test the published post, not only the draft

Preview the post on the path your audience will use. Threads has both mobile apps and a web client, and a publishing tool may send media through the Threads API. Check the published post after each new media workflow or format change.

For a practical pass:

• read the post with VoiceOver, TalkBack, or another screen reader;
• move through links and controls without relying on the image;
• zoom or enlarge text and check that the important words remain readable;
• play video with sound off and confirm the captions carry the spoken content;
• open the post on mobile and web;
• correct the source post or media when a check fails.

This content check catches problems a creator can fix before sharing the post more widely. A WCAG certification of the Threads app requires a broader audit.

Keep a small test post when Threads or a publishing tool changes its media workflow. The post can contain one image with known alt text, a short captioned video, a descriptive link, and a multiword tag. Publish it privately when the network supports that audience control, or delete it after checking when it does not.

Record what the screen reader announces on mobile and web. If the alt text disappears only through a third-party publishing path, report that exact path to the tool. If it also disappears in the native Threads composer, check the app version and Meta's current help before assuming the old behavior still applies.

Tools and platform checks

Scheduling accessible Threads posts with TheBlue.social

I make TheBlue.social. Its Threads scheduler lets you prepare Threads posts and attach alt text to images before publishing. The alt text is sent with the media through the Threads publishing API.

If you need a first draft for an image description, use AltCaption and then edit the description for the image's purpose. Generated descriptions still need a person to check names, text, context, and anything the model missed.

The scheduler cannot decide whether an image is decorative, whether a chart needs its data in the post, or whether a generated description explains the point. Make those decisions in the composer, then verify the published post.

What to ask Threads to improve

Creators can fix their own media and copy. Platform accessibility still depends on Meta keeping controls labeled, keyboard and screen-reader navigation working, text resizable, captions editable, and accessibility fields available on mobile, web, and the API.

Report a current problem with the device, operating system, Threads version, interface, and exact steps that failed. A report that says "alt text is broken" is hard to act on. A report that says the published image's edited description is announced on iOS but missing on Threads.com gives Meta a path to check.

FAQs

Is Threads still mobile-only?

No. Meta launched a logged-in web experience in 2023 and now operates the web client at Threads.com.

Can creators edit alt text on Threads?

Yes. Meta says creators can edit the automatically generated description for photos and videos before posting. Check the current composer because controls can differ between app versions and publishing tools.

Is automatic alt text enough?

Treat it as a draft. Rewrite it when it misses the image's purpose, visible text, names, numbers, or context from the post.

Last updated: August 13, 2026