HTTP Status Codes Reference
What every status code means — and how to fix it.
Runs 100% in your browser — nothing is ever uploaded.
What is HTTP codes?
Every HTTP status code explained: 1xx–5xx with meanings, common causes and fixes. Searchable reference, free. Enter a value and watch the result update instantly — no waiting and no page reloads. No installation, no account and no upload: the whole process happens client-side in your browser, which keeps your data 100% private.
How to use HTTP codes
- Open HTTP codes — it runs instantly in your browser.
- Enter your value or adjust the interactive controls.
- The result updates in real time as you type.
- Copy the result with one click and use it anywhere.
NetScope FAQ
Is HTTP codes really free?
Yes — HTTP codes is 100% free with no limits, no watermarks and no registration. You can use it as often as you like, on as many files or inputs as you need.
Is my data safe when I use HTTP codes?
Absolutely. HTTP codes runs entirely in your browser using JavaScript — your input is processed on your own device and is never uploaded to any server.
Does HTTP codes work on mobile devices?
Yes. HTTP codes works in any modern browser on desktop, tablet and mobile (Chrome, Firefox, Safari, Edge) — there is no app to install.
Are these network tools free?
Yes — every NetScope tool is 100% free with no signup, no limits and no ads walls.
Is my data uploaded anywhere?
No. All calculations (CIDR math, URL parsing, UTM building) run entirely in your browser. Nothing ever leaves your device.
Do these tools work offline?
Yes — once the page is loaded, the calculators work without an internet connection.