Free tool
Social image alt text generator
Draft short alt text for social posts where speed matters but the description still needs to be clear. Add the platform, post topic, and visible text so the result fits the post.
Good for
- Draft Instagram alt text before posting.
- Describe Pinterest images without stuffing keywords.
- Keep social images accessible across platforms.
Useful social context
- Platform and post topic.
- Visible text in the image.
- Whether it is a photo, chart, quote card, meme-style image, or product post.
- Any names, places, or event context the viewer needs.
Social alt text tips
- Describe visible text if the image contains a quote, announcement, or chart label.
- Do not use hashtags as a substitute for image description.
- Keep tone plain and readable across platforms.
Example social context
Bluesky launch post for a new feature. Image shows a settings screen with the export button highlighted.
Related free alt text tools
Image alt text checker
Check a page for missing, empty, duplicate, or weak image alt text. Generate fixes for images that need better descriptions.
Bulk image alt text generator
Generate alt text for a short list of image URLs, then move larger batches to AltCaption Pro.
Product image alt text generator
Generate product image alt text with product name, category, and visible details as publishing context.
Shopify alt text generator
Generate image alt text drafts for Shopify product photos, collection images, and storefront media.
Alt attribute generator
Generate clean image alt text and copy it as an HTML alt attribute for CMS or code updates.
Image alt text validator
Check image alt text for common issues like empty, generic, long, or keyword-stuffed descriptions.