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Robots.txt Tester
Tests whether a given URL is allowed or blocked by a robots.txt file, showing which rule…
Image Alt Text Checker
Lists every image in your HTML and flags missing, empty, duplicated or keyword-stuffed alt attributes.
SEO
Nothing uploaded
No sign-up
Free, unlimited
Paste something on the left to see the result.
In short
Image Alt Text Checker is a free online tool on inputtesthub.com that lists every image in your HTML and flags missing, empty, duplicated or keyword-stuffed alt attributes. It needs no account, no download and no payment, and there is no daily usage limit. Everything is processed inside your own browser, so the data you paste is never uploaded to a server.
How to use the Image Alt Text Checker
- Paste your code into the input area.
- Choose the indentation and output options you want.
- Read the formatted result, then copy or download it.
About the Image Alt Text Checker
The Image Alt Text Checker lists every image in your HTML and flags missing, empty, duplicated or keyword-stuffed alt attributes. It runs as plain JavaScript inside the page, which means there is no upload step, no queue and no size limit imposed by a server — the only limit is your own device.
What people use it for
- Fixing accessibility issues before an audit.
- Finding images that will never rank in image search.
- Checking a bulk upload got alt text applied.
Frequently asked questions
Do I need an account to use the Image Alt Text Checker?
No charge and no sign-up. There is no free tier to run out of because there is no paid tier — inputtesthub.com is funded by advertising rather than by metering the utility.
Is what I paste into the Image Alt Text Checker stored?
No. The Image Alt Text Checker runs entirely in your browser using JavaScript. Because the work happens locally, the utility also keeps working if your connection drops, and closing the tab is all it takes to discard everything.
What problem does the Image Alt Text Checker solve?
In practice it gets used for three things: fixing accessibility issues before an audit. Finding images that will never rank in image search. Checking a bulk upload got alt text applied. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Is there an app version?
Yes. The page is responsive and the utility works in Chrome, Safari, Firefox, Edge and Samsung Internet on both Android and iOS. There is no app to install and nothing to sign into.
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