Readability Score
Readability Score handles one task — flesch reading ease + grade level — without an account or a download. All counting, matching and rewriting happens in JavaScript on the page itself, so even long confidential drafts stay in your browser. It is used most by developers tidying data pasted out of a spreadsheet or log. Handles full Unicode, so accented Latin, Cyrillic, Arabic, Chinese and emoji all count correctly. It stays free with unlimited use, and there is no watermark on anything it produces.
Key features
- Handles full Unicode, so accented Latin, Cyrillic, Arabic, Chinese and emoji all count correctly.
- Works on documents of tens of thousands of words without lag.
- Works on desktop, tablet and phone — no separate app to install.
- Loads in under a second and gives its result in one action.
How to use Readability Score
- Paste your text: Paste or type into the box above. It accepts anything from a sentence to a full manuscript.
- Choose what you need: Set the options that match your task — the result updates as you change them.
- Copy the result: Copy the output with one click and paste it wherever you are working.
Frequently asked questions
- Will formatting be kept? — No. Pasted content is treated as plain text, so bold, colours and links are dropped.
- Does it handle languages other than English? — Yes — full Unicode support, so Cyrillic, Arabic, Chinese, Japanese, accented Latin and emoji are all handled properly.
- How much text can I paste in? — Tens of thousands of words is comfortable. The only real limit is how much your browser will hold.
- Is my text stored when I use Readability Score? — No. Readability Score processes the text in the page itself. Nothing is transmitted or saved, which matters for unpublished or confidential writing.