01
Keyboard Test
Test keyboard keys, inspect repeated inputs and review a local test summary. Get clear…
Browser Storage Test
Shows how much storage this site may use, how much is already used, and which storage mechanisms your browser allows.
Device Tests
Nothing uploaded
No sign-up
Free, unlimited
The test starts automatically — follow the prompts above.
In short
Browser Storage Test is a free online tool on inputtesthub.com that shows how much storage this site may use, how much is already used, and which storage mechanisms your browser allows. 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 Browser Storage Test
- The test starts on its own — no button to press and nothing to install.
- Follow the prompt in the test panel and watch the readings update live.
- Press Reset to start over with a clean slate.
About the Browser Storage Test
The Browser Storage Test shows how much storage this site may use, how much is already used, and which storage mechanisms your browser allows. 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
- Diagnosing a web application that keeps losing saved data.
- Checking whether private browsing mode is what is breaking a site.
Frequently asked questions
Why is my quota so small?
Private and incognito windows get a much smaller allowance, and browsers reduce it further when disk space is low. The figure is also rounded on purpose to limit fingerprinting.
Is this my free disk space?
No. It is what this one website is permitted to store, usually a percentage of the free space on the volume.
Is there a limit on how often I can use the Browser Storage Test?
Free, unlimited, and no email address required. You can use it a hundred times a day and nothing changes.
Is my data uploaded anywhere?
No. The Browser Storage Test runs entirely in your browser using JavaScript. Nothing is transmitted, logged or stored, which you can verify yourself in the Network tab of your browser's developer tools.
When would I actually need the Browser Storage Test?
The jobs it is built for: diagnosing a web application that keeps losing saved data. Checking whether private browsing mode is what is breaking a site. It is built for exactly those cases rather than being a general-purpose tool with this bolted on.
Do I need to install anything to run this test?
No installation, no extension and no driver. The Browser Storage Test uses the browser's own device APIs and begins as soon as the page loads, so there is nothing to press first. Press Reset at any point to start over with a clean slate.
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