All tools
Free SEO diagnostic · No upload

Image alt text checker

Inspect pasted HTML for missing, empty and repeated image alternatives. Review nearby text and action labels, then export an accessible editing checklist.

Your input stays in this tab

Files and pasted content are processed locally, never uploaded or saved. Closing or refreshing clears them. Usage events contain the tool name and action only.

How to use this tool

  1. 1.Paste the markup containing the images you want to review. For JavaScript-inserted images, use a rendered DOM snapshot.
  2. 2.Review missing and empty alternatives separately. Decide whether each image is decorative, informative or functional in its context.
  3. 3.Add editing notes and export the inventory. Write meaningful alternatives without keyword stuffing; an empty alternative may be the correct result.
Input files and analysis settings

Paste source or rendered HTML containing img, image input or area elements. Images are not downloaded or visually analyzed.

This does not see image contents, guarantee accessibility compliance or score SEO quality. CSS background images and complete accessible-name calculation are outside scope. Maximum HTML input: 2 MB.

Use image alt text checker in a repeatable workflow

Paste the markup containing the images you want to review. For JavaScript-inserted images, use a rendered DOM snapshot.

Review missing and empty alternatives separately. Decide whether each image is decorative, informative or functional in its context.

Add editing notes and export the inventory. Write meaningful alternatives without keyword stuffing; an empty alternative may be the correct result.

Keep the evidence with your decisions

The result tables preserve the observations behind each finding. Filter rows to focus your review, add notes to the main table and export a CSV. Use the text report to keep the method and limitations alongside the data.

A local diagnostic answers a bounded question about the input you provide. It does not prove how a search engine crawled, indexed or ranked your site. Follow up with a live check or the relevant first-party report when the decision depends on that evidence.

FAQ

Does RankCrab upload or store my files?+

No. The tool processes the input in this browser tab. It does not upload, save or fetch the supplied URLs. Closing or refreshing clears your input. Basic tool-name/action events never include file contents, filenames, URLs or queries.

Can I try it without preparing a file?+

Yes. Load the worked example and run the check to see a clearly fictional input and its output. Replace the sample with your own data before making decisions.

What are the limits of this check?+

This does not see image contents, guarantee accessibility compliance or score SEO quality. CSS background images and complete accessible-name calculation are outside scope. Maximum HTML input: 2 MB.

Can I export the result without signing up?+

Yes. Download every result table as CSV or save a text report with method notes. Reviewer notes appear in the corresponding table CSV. Exports escape formula-like cell values for safer spreadsheet use.

Keep your next step grounded in evidence.

The free tools are available now. Join the launch list for news about the paid product.