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01Accessibility toolTool result
Alt Text Auditor
Find missing or unhelpful image alt text.
100% FreeRuns instantlyNo watermark
- 1Choose toolOpen the Vootkit workspace.
- 2Add inputProvide the content or settings.
- 3ProcessLet the browser do the work.
Private by designProcessed on your device where possible.
Works on any deviceDesktop, tablet and mobile browsers.
No installationOpen the page and start working.
Always free coreUse the free plan for everyday tasks.
How to use Alt Text Auditor
Provide the content or settings.
02Let the browser do the work.
03Copy, download or continue.
04Your files stay private
Your work is processed locally in your browser where possible and is never added to a Vootkit upload library.
Learn more about privacyMissing alt text is the most common accessibility failure on the web, and bad alt text is nearly as unhelpful — "image", "photo", "IMG_4021" all pass an automated check and tell a screen reader user nothing.
What Alt Text Auditor does
Finds images without alt attributes, and flags values that are technically present but useless.
The distinction that matters most: a decorative image should have alt="" — empty, not missing. Empty means "skip this"; absent means the screen reader may read the filename aloud.
What it checks
| Missing <code>alt</code> | Flagged |
|---|---|
| <code>alt=""</code> | Correct for decorative images |
| <strong>Empty vs missing</strong> | <strong>Not the same thing at all</strong> |
| Useless values | "image", "photo", filenames |
| Good alt text | Describes function or content in context |
| Length | Usually under ~125 characters |
| <strong>Cannot check</strong> | <strong>Whether the description is accurate</strong> |
| Runs | On your device |
Detailed steps
- Paste the markup.
- Give every meaningful image a description of its purpose in context.
- Give every decorative image
alt=""— empty, not absent.
Worth knowing
Write what the image <em>does</em>, not what it depicts. A photo of a person on an "About" page might be "Sarah Chen, founder"; the same photo as a link to a profile is "View Sarah Chen’s profile". Describing pixels is the common instinct and it is usually the less useful answer — context decides what a screen reader user actually needs.
Frequently Asked Questions
What about decorative images?
Give them <code>alt=""</code>. That explicitly tells assistive technology to skip them. Omitting the attribute entirely is different and worse — some screen readers then announce the filename, which is noise.
How long should alt text be?
Usually under about 125 characters. If an image genuinely needs more — a complex chart or diagram — describe it in the surrounding text and keep the alt short, since a long alt string is read as one unbroken utterance.
Does an image need alt text if there is a caption?
Usually yes, and they should not simply repeat each other. The caption is read by everyone; the alt describes the image itself. Where a caption fully describes it, an empty alt avoids hearing the same sentence twice.
Does passing mean my alt text is good?
No. A checker can see that text exists; it cannot tell whether it describes the image usefully. "image123" passes automated validation and helps nobody.
Is Alt Text Auditor free?
Yes. The Vootkit free plan includes 5 tool runs a day. Upgrade to Vootkit Pro for unlimited daily use, an ad-free workspace and saved workflows.
Are my files uploaded?
No. Alt Text Auditor runs entirely in your browser — your file is processed on your own device and never sent to a server. There is nothing for us to store or delete.
Do I need to install anything?
No. Alt Text Auditor works in any modern browser on desktop, tablet or phone. Open the page and start.
How often can I use it? Is there a daily limit?
On the free plan you get 5 tool runs a day. When you reach the limit you'll see a prompt to upgrade, and it resets the next day. Vootkit Pro removes the cap entirely for unlimited daily use.
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This tool processes everything locally in your browser. You can disconnect from the internet after the page loads and it will still work.