HTTP Status Lookup

Look up any HTTP status code and get a plain-English explanation of what it means and when it's used — from 100 to 504. Runs in your browser.

Runs in your browser — your file never leaves your device

Frequently asked questions

Is HTTP Status Lookup free to use?

Yes — HTTP Status Lookup is completely free with no limits, no watermarks and no sign-up. It runs in your browser, so there is nothing to pay for.

Are my files uploaded or stored anywhere?

No. This tool does all its work locally in your browser using your own device's power. Your files never leave your device and we never see them.

Do I need to install anything or create an account?

No installation and no account needed. HTTP Status Lookup works on any modern browser — Windows, Mac, Linux, Android and iPhone.

How do I use HTTP Status Lookup?

Open the tool, add your file (or paste your content), adjust any options, then press “Look up code”. Your result is ready to download in seconds.

Paste JSON, get typed interfaces.

Strip comments & whitespace from CSS.

.pdf ↔ application/pdf, both ways.

Sort object keys alphabetically, deep.

Date maths, business-days aware.

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