Readability Checker

Score the readability of your writing (Flesch).

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About the Readability Checker

The Readability Checker is a free online tool that lets you score the readability of your writing (Flesch). With it you can run smart text intelligence right in your browser — there's nothing to install and no account to create. Just open the tool, do what you need, and you're done.

It's part of the AI collection on OmniTools, a growing platform of 131+ free, privacy-first tools built for speed and a great experience on every device.

Also known as: flesch, grade, reading, level.

Why use the Readability Checker?

  • On-device — your text stays private
  • No API keys or sign-up
  • Instant results
  • Works on any device

When to use it

  • Summarising long text
  • Extracting key information
  • Quick content analysis

How to use the Readability Checker

  1. Open the Readability Checker. Open the Readability Checker on this page — there is nothing to install and no account needed.
  2. Add your input. Type or paste your input into the tool.
  3. Adjust options. Choose any options you need — the Readability Checker updates instantly.
  4. Get your result. Click the action button to download or copy your result. It is 100% free.

Frequently Asked Questions

How do I use the Readability Checker?
Open the Readability Checker above, add your input or upload your file, adjust any options, and get your result instantly — no sign-up required.
Is the Readability Checker free?
Yes, the Readability Checker is 100% free with no watermarks, no limits and no account needed.
Is my data private?
This tool runs entirely in your browser. Your data never leaves your device, so it stays completely private.
Does it work on mobile?
Yes. The Readability Checker works on any modern browser across desktop, tablet and mobile.
Does this send my text to an AI server?
No — it runs on-device in your browser, so your content stays private.

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