---
title: "HTTP Header Checker: Check the HTTP response headers of…"
canonical: "https://openvibe.tools/tool/headers"
updated: null
---

# HTTP Header Checker: Check the HTTP response headers of…

HTML: [HTTP Header Checker: Check the HTTP response headers of…](https://openvibe.tools/tool/headers)

# HTTP Header Checker

Fetch any URL and read the full response headers, with the security and caching headers called out so you can see what a browser is being told to do.

- **Limits** No file upload · Up to 1,000 runs a day
- **Where it runs** Runs on our server; no file is uploaded.
- **Cost** Free, with the limits above. No account needed.

 [Open HTTP Header Checker](https://headers.openvibe.tools/) 

## Where to find it

Every address below opens the same tool. The first address is the one to bookmark and share.

- [headers.openvibe.tools](https://headers.openvibe.tools/)Primary

## People also call this

**What it's for:** Check the HTTP response headers of any URL, including security, caching and compression headers. Header analysis tool.

**What trips people up:** **Why is my page not being cached?** Look at Cache-Control. A no-store or no-cache directive, or a missing max-age, prevents browsers and CDNs from reusing the response.

- http header checker
- response headers
- security headers check
- cache headers
- view http headers

## Use it from code

- `POST https://openvibe.tools/api/v1/tools/headers/run`
- No account needed: anonymous calls run on the lowest quota tier; a token with `tools.tool.run` raises it.
- It answers with the result.

~~~~
curl -X POST https://openvibe.tools/api/v1/tools/headers/run \
  -H 'Content-Type: application/json' \
  -d '{"input":{"target":"example.com"}}'
~~~~

Inputs: [JSON Schema](/api/v1/tools/headers/schema) · [OpenAPI](/api/v1/openapi.json) · from JavaScript: `tools.run("headers", …)` in [openvibe-sdk](https://github.com/OpenVibers/OpenVibe.SDK) · [How the API works](/developers)

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## The rest of OpenVibe

5 links

One account works on every site. Open source and community-run.

[**OpenVibe.Live** Live streams, clips and chat](https://openvibe.live/) [**OpenVibe.Community** Pastes, posts and people](https://openvibe.community/) [**OpenVibe.Games** Browser games](https://openvibe.games/) [**OpenVibe.Media** VODs, clips and files](https://openvibe.media/) [**OpenVibe.Network** One account for every site](https://openvibe.network/)