Accessibility in Social Media: A Creator's Guide to Inclusive Content

When you post without alt text, someone using a screen reader experiences nothing but "image." When you upload a video without captions, 466 million people with hearing disabilities miss your message entirely. Accessibility isn't a niche concern — it's a fundamental part of reaching your full audience.

The Scale of the Opportunity

Platform-by-Platform Accessibility Guide

Instagram

• Alt text — Write descriptive alt text for every image. Go to Advanced Settings → Write Alt Text. Describe what's in the image, not your caption.
• Reel captions — Use Instagram's auto-caption feature, then review and correct errors. Burned-in captions (added during editing) are more reliable and visible.
• Story text — Use high contrast text colours. Avoid placing text over busy backgrounds. Use the background colour sticker for readability.
• Hashtags — Use CamelCase for multi-word hashtags: #SocialMediaTips not #socialmediatips (screen readers read CamelCase correctly)

YouTube

• Closed captions — Always upload corrected captions. Auto-generated captions have roughly 80% accuracy — that remaining 20% can completely change meaning.
• Audio descriptions — For visual content that isn't described verbally, add an audio description track.
• Chapters — Timestamped chapters help users navigate to the content they need without watching the entire video.
• Thumbnail text — Ensure text on thumbnails is large enough to read on mobile and has high contrast.

TikTok

• Auto-captions — Enable them for every video. Review for accuracy.
• Text-to-speech — Useful for conveying text-heavy content to those who can't read the screen easily.
• Visual descriptions — In text overlays or voiceover, describe what's happening visually for users who may have difficulty seeing the video clearly.

Writing Better Alt Text

Alt text is the most impactful accessibility improvement you can make. Here is how to write effective alt text:

What to Include

• Describe the content: what's in the image, who's in it, what's happening
• Include relevant context: "A woman holding our new summer collection sundress in coral" not just "A woman holding clothes"
• Convey the mood or emotion if relevant
• Mention text that appears in the image

What to Avoid

• Don't start with "Image of..." or "Photo of..." (screen readers already announce it as an image)
• Don't stuff keywords for SEO — write for humans
• Don't describe decorative images in detail — mark them as decorative or use brief descriptions
• Don't exceed 125 characters unless the image is complex (charts, infographics)

Alt Text Examples

Colour and Visual Design

Contrast Ratios

WCAG 2.1 guidelines recommend a minimum contrast ratio of 4.5:1 for normal text and 3:1 for large text. For social media graphics:

• White text on dark backgrounds or dark text on light backgrounds
• Avoid light grey text on white backgrounds (common design choice but fails accessibility)
• Test your designs with a contrast checker tool before posting
• Never rely solely on colour to convey information (use icons, labels, or patterns alongside colour)

Language and Cognitive Accessibility

• Use plain language where possible — avoid jargon unless your audience expects it
• Break complex ideas into short sentences and paragraphs
• Use bullet points and numbered lists for scanability
• Provide content warnings for potentially distressing content
• Avoid flashing animations that could trigger photosensitive epilepsy

Accessibility isn't an add-on feature — it's a design philosophy. Every piece of content you create is an opportunity to include or exclude millions of people. The time investment is minimal: 30 seconds for alt text, 5 minutes to review captions. The impact is immeasurable.