What is HTTP Status Codes Reference?
HTTP Status Codes Reference is a free, browser-based tool in the Developer Tools suite. A searchable, grouped reference of HTTP status codes from 1xx Informational through 5xx Server Error. Filter by code, name or description; click any row to copy 'CODE Name'.
The headline benefit: searchable reference of 60+ http status codes — click to copy.
Unlike most online tools that upload your file to a server, process it, and send it back, HTTP Status Codes Reference runs entirely in your browser. Open DevTools → Network while using it and you'll see zero file-upload requests — only static assets (JavaScript, CSS, fonts) load. Your data never leaves your device.
Why use this http status codes reference?
Three reasons EasyFileKit's HTTP Status Codes Reference stands out from the crowd:
- **Private by design** — all processing happens locally via JavaScript and WebAssembly. No server ever sees your input.
- **Instant** — no upload wait, no queue, no server round-trip. Results appear the moment you act.
- **Free & unlimited** — no accounts, no watermarks, no daily caps. Use it as many times as you like.
How to use HTTP Status Codes Reference — step by step
Here's the complete walkthrough. Everything happens instantly in your browser:
- **Step 1.** Type in the filter box to search by code, name or description.
- **Step 2.** Browse codes grouped by class (1xx–5xx).
- **Step 3.** Click any row to copy 'CODE Name' to your clipboard (e.g. '200 OK').
- **Step 4.** Use the toast confirmation to verify the copy.
That's it. No sign-up, no upload bar, no waiting. If something doesn't work as expected, check the FAQ below.
Common use cases for HTTP Status Codes Reference
People reach for HTTP Status Codes Reference in a few recurring situations:
- When you need the result **now** and can't wait for a server-based tool to upload, queue, and process your file.
- When your file is **private or sensitive** — financial documents, personal photos, medical PDFs — and you don't want it travelling across the internet.
- When you're on a **slow or metered connection** — uploading a 50 MB file just to compress it makes no sense when the same work can happen locally.
- When you've hit the **daily limit or paywall** on another "free" tool site.
Privacy: what actually happens to your data
This is the single most important point about HTTP Status Codes Reference, so it deserves its own section.
When you use this tool, your input is processed by JavaScript running in your browser tab. The code is downloaded once (cached afterwards) and executes locally on your CPU. At no point is your file, your text, or your input data transmitted to any server.
You can verify this yourself in under 30 seconds:
- Open HTTP Status Codes Reference in your browser.
- Press F12 to open DevTools.
- Switch to the Network tab and tick "Disable cache".
- Use the tool — drop a file, type text, whatever the tool needs.
- Watch the Network log. You'll see only static assets (JS, CSS, fonts, icons). No request contains your data.
This isn't a setting you toggle or a promise in a privacy policy — it's how the tool is architecturally built. There is no upload endpoint to call.
Frequently asked questions about HTTP Status Codes Reference
Q: How many status codes are included?
A: Over 60 codes spanning 1xx Informational, 2xx Success, 3xx Redirection, 4xx Client Error and 5xx Server Error — including common ones like 200, 301, 404, 429, 500 and lesser-known ones like 418, 451 and 511.
Q: What does each row show?
A: The numeric code, the official name (e.g. 'Not Found'), and a short description of when the server sends it. Click the row to copy 'CODE Name'.
Q: How does the search work?
A: It matches against the code number, the official name, and the description — all case-insensitive. Type 'gateway' to find 502 and 504; type '404' to jump straight to Not Found.
Q: Are unofficial codes included?
A: Yes — the Twitter/RFC 7725 451 'Unavailable For Legal Reasons', the Cloudflare 520-series are not included (they're not standard), but RFC 2324's 418 I'm a Teapot is.
Q: Is the data fetched from a server?
A: No. The status code table is bundled with the page — there's no network request when you search or copy.
HTTP Status Codes Reference: EasyFileKit vs server-based tools
Most "free" online tools that do what HTTP Status Codes Reference does follow the same model: you upload your file to their server, they process it with a backend script, then they send the result back. Here's the honest comparison:
| | EasyFileKit | Server-based tools |
|---|---|---|
| **Your file leaves your device?** | Never | Yes, uploaded to a server |
| **Speed** | Instant (no upload) | Slower (upload + queue + download) |
| **Privacy** | Complete | Your file is on someone else's computer |
| **Cost** | Free, unlimited | Often capped or "premium" gated |
| **Works offline** | Yes (PWA) | No |
Server-based tools aren't evil — they exist because some tasks genuinely need heavy backend compute. But for everything HTTP Status Codes Reference does, client-side processing is strictly better for you.
Under the hood: how HTTP Status Codes Reference works
HTTP Status Codes Reference is built with modern browser APIs. Depending on what it does, it may use:
- **Canvas API** — for image manipulation (pixel-level access, filters, resizing).
- **Web Crypto API** — native, hardware-accelerated cryptography (AES-GCM, SHA-256, PBKDF2) for any encryption or hashing.
- **pdf-lib / pdf.js** — fully client-side PDF creation and rendering.
- **MediaRecorder API** — for capturing screen, audio, and video.
- **WebAssembly** — for heavy codecs (image compression, media processing).
All of these run inside your browser's sandbox. They cannot access your filesystem (beyond files you explicitly choose), cannot make network requests with your data, and cannot run persistently in the background.
Pro tips for getting the most out of HTTP Status Codes Reference
- **Bookmark the tool** — it works offline once cached, so you can use it even without a connection.
- **Install EasyFileKit as a PWA** — open the browser menu and choose "Install app" for a standalone window and offline access.
- **Use it on mobile** — every tool is fully responsive and works on phones and tablets, not just desktops.
- **No file size anxiety** — because nothing uploads, you can process large files that server-based tools would reject or charge for.
Try HTTP Status Codes Reference now
The tool is right above this article — scroll up and start using it. No sign-up, no upload, no limits.
If you found HTTP Status Codes Reference useful, explore the rest of the Developer Tools suite — there are more tools that work the same private, instant, free way. And if you have a question that isn't covered in the FAQ above, the About page has our contact email.