Web Tools

Heading Checker

Heading Checker — extract the H1–H6 outline from HTML and flag heading issues. It works entirely in your browser, with nothing uploaded to any server.

Client-sideRuns entirely in your browser — your data never leaves your device.

Heading Checker is a free Web Tools utility that runs entirely in your browser — nothing you enter is uploaded.

HTML input
Heading outline

How to use Heading Checker

  1. Start by adding the text you want to check into Heading Checker.
  2. Heading Checker updates the output automatically as you type.
  3. When it looks right, Copy to save it.

About this tool

Heading Checker runs entirely in your browser. Heading Checker handles your input locally and returns the result instantly, with no sign-up.

It is designed to do one job well and stay out of your way. No data is sent anywhere, so it stays fast and private by default.

Frequently asked questions

What does Heading Checker do?

Use Heading Checker to check your input without installing anything; everything happens client-side.

Do I need an account for Heading Checker?

No — Heading Checker needs no account, sign-up or installation.

Does Heading Checker upload my data?

No — Heading Checker processes everything locally in your browser, so nothing you enter is uploaded or stored.

Does Heading Checker work on mobile?

Yes — Heading Checker is just a web page and runs on any modern browser, including phones and tablets.

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