Headers Checker

Enter a URL to fetch response headers available to the browser and copy them for debugging. Inspect CORS-visible HTTP response headers for a URL.

Introduction

HTTP Headers Checker is a free, browser-based utility in our HTTP & API Tools collection. Enter a URL to fetch response headers available to the browser and copy them for debugging. HTTP Headers Checker reads response headers from CORS-enabled endpoints directly in your browser. Everything runs locally in your browser — inputs stay on your device, with no account or upload required. Highlights include fetch headers.

Features

Fetch headers
Status line
Copy header list

How to use

1
Enter a URL.
2
Click Check headers.

Example

example.com

Input

https://example.com

Output

content-type: text/html..

Benefits

Run Headers Checker entirely in the browser with no signup or installation.
Keep sensitive sample data private — processing never leaves your device.
Fetch headers
Status line
Copy header list
Pair it with Request Tester and HTTP Status when your workflow needs adjacent utilities.

FAQs

Browsers only expose headers allowed by CORS.

No - your browser requests the URL.

Uses GET for broader compatibility.

Yes. Headers Checker on EverydayDevTools is free, with no account, watermarks, or usage caps for normal interactive use.

No. Headers Checker runs in your browser. Your input is processed locally and is not sent to EverydayDevTools servers.

Enter a URL to fetch response headers available to the browser and copy them for debugging. It fits everyday http & api tools tasks when you want a fast local utility instead of installing a CLI or opening a heavy IDE feature.

Core capabilities include: Fetch headers; Status line; Copy header list.

Developers often pair Headers Checker with Request Tester, HTTP Status, URL Parser. Open Related tools on this page for quick links.