A practical accessibility check for social media content

Write alt text for the image's purpose

W3C's image guidance recommends text alternatives that convey the information or function an image provides. For social content, describe what matters to understanding the post rather than listing every visible object. If important words appear only inside a graphic, make those words available in an appropriate text alternative or accompanying accessible text.

Avoid using alt text as a second promotional caption or a place to repeat keywords. “Beautiful premium quality amazing workshop” does not explain an image. Identify the relevant subject, action, and distinction. When a carousel contains several meaningful images, prepare descriptions for each instead of applying one generic line throughout.

Illustrative example: a repair comparison

A fictional shoe repair shop posts two photographs showing the same boot before and after replacing its sole. A useful description might read: “Two side-by-side views of a brown leather boot. The left sole is visibly worn at the heel; the right shows the replacement sole fitted to the same upper.” This explains the comparison without promising how long the repair will last.

The caption can supply additional facts: the work performed, relevant limitations, and how to request an assessment. If the graphic contains a pickup date, that date also needs to be available in text. Do not make someone interpret a photograph to discover the only time-sensitive instruction.

Review captions as part of editing

W3C explains that captions communicate speech and meaningful non-speech audio. Automatic captions can be a starting point, but names, technical terms, numbers, and timing need human review. Check that captions remain visible long enough to read and do not cover the object being demonstrated or important on-screen controls.

Watch once without sound. Can a viewer follow the message? Then listen without looking. If essential information is purely visual, add a concise spoken explanation or another suitable text description. A video that says “use this one” while pointing at two unlabeled options needs more than a transcript of those words.

Make text readable in the final size

WCAG 2.2's minimum contrast guidance uses 4.5:1 for ordinary text and 3:1 for qualifying large text, with defined exceptions. These are useful design benchmarks, not a blanket certification that a social account is accessible or legally compliant. Platform behavior and the full user experience still matter.

Check actual foreground and background colors with a contrast tool, then view the exported asset at realistic phone size. Large text in the design file may become small when displayed. Prefer a solid text panel to lettering placed over an unpredictable photograph. Do not use color alone to distinguish available from unavailable options; add words or symbols with a clear explanation.

Build accessibility into the handoff

Keep the image, caption, alt text, video captions, and destination link together in the content package. A designer can prepare alternatives, but someone must apply the appropriate platform controls when publishing. Verify the current options for the account and format rather than assuming every scheduler preserves every accessibility field.

Use this checklist before approval and again after publication. The second check catches crops, overlays, missing captions, and other changes introduced by the platform.

• Meaning: Is the main point understandable without seeing the image or hearing the audio alone?
• Text alternatives: Does each meaningful image have an appropriate description where supported?
• Captions: Have speech, names, numbers, and relevant sounds been checked against the recording?
• Readability: Are text size, contrast, spacing, and on-screen duration usable on a phone?
• Instructions: Are dates, locations, and next steps available as clear text rather than visual clues alone?
• Destination: Does the linked page offer a usable continuation, including labeled controls and readable content?

Review friction rather than chasing a score

Track concrete defects: missing descriptions, caption corrections, unreadable exports, and questions caused by unclear instructions. Keep an issue log with the asset, problem, correction, and owner. When someone reports an access barrier, ask what information or interaction was unavailable and fix the underlying content where possible.

Do not interpret a lack of complaints as proof of accessibility. People may leave silently. Periodically have someone unfamiliar with the asset review it using different viewing conditions and, where possible, relevant assistive technology. Accessibility testing is an ongoing quality practice, not a one-time badge.

Are burned-in captions enough?

They can help people watching without sound, but they do not replace every other accessibility need or the platform's available caption features. Review the complete experience, including visual-only information and a useful text alternative when appropriate. InSocial can prepare readable designs and caption-ready files within the content brief; the final publisher should confirm that the platform preserves and displays the supplied accessibility material.