Clarity · Readability · SEO

Readability Checker

Check copy for clarity: find long sentences, formal filler, dense paragraphs, and the edits to make first.

Long sentenceshighlighted with edit priority

Formal fillerbureaucratic style and passive voice

Dense paragraphsstructure and reading difficulty

WorkflowFREE

Paste textany SEO copy to check

We analyzeclarity, style and structure

Edithighest-priority edits first

Text Analyzer Measures SEO metrics: frequency, water content, density, and repetition.

Spell Checker Finds language errors: spelling, punctuation, and grammar.

Clarity Editor ✦ Shows why text is hard to read and how to make it clearer.

Why SEO copy needs a clarity editor

SEO copy can be error-free and still underperform. Users do not read pages like documents: they scan headings, inspect the first phrases, compare terms, and look for a fast answer. If paragraphs are dense, sentences are overloaded, and the benefit is hidden behind formal wording, the page loses attention before the CTA.

What the tool checks

long sentences and dense paragraphs;
formal filler, passive wording, and weak phrasing;
places that need bullets, a subheading, an example, or a takeaway;
fit for the selected format: article, landing page, product page, or FAQ.

How to use the result

Start with "What to fix first", not the score. Then move through problem fragments from top to bottom: split heavy sentences, replace formal constructions with direct actions, and break dense paragraphs into short blocks.

FAQ

Does this replace Text Analyzer?

No. Text Analyzer measures SEO metrics. The readability checker shows editorial problems: where text is hard to read and what to simplify.

Is this a spell checker?

No. Use Spell Checker for spelling and punctuation. This tool can flag a correct sentence if it is too long, abstract, or poorly structured.

Do I need an API key?

No. The current version uses local deterministic rules and does not call external APIs, so it is free and fast.

Why is there not always a rewritten version?

If the algorithm cannot honestly improve a phrase without losing meaning, it shows an editorial action instead of a fake rewrite: split, clarify, add an example, or turn it into bullets.

How to check text readability

Paste your article text or page copy into the editor.
Review the readability score and the highlighted problem spots.
Start with the longest sentences — they damage comprehension the most.
Break up dense paragraphs and remove filler wording while keeping the meaning.
Re-run the check after editing and compare the readability score.

Why readability matters for SEO

Readability is not a direct ranking factor, but it drives behaviour: if a reader cannot follow the first screen, they return to the results and the page loses the click it earned.

Long sentences and stacked jargon usually cluster in the intro — exactly where the reader decides whether to stay. The checker surfaces those spots first.

Clear copy is also easier to quote: short direct statements are picked up by snippets and AI answers far more often than complex constructions.

Frequently Asked Questions

Which formula does it use?

For English the tool computes the Flesch reading ease score from the classic formula: average sentence length and average syllables per word. Ukrainian and Russian use an adapted version, because the original calculator is calibrated on English and skews on Cyrillic.

What is a good readability score?

For most commercial and blog copy, aim for a level a reader needs no special training to follow. Technical material can be denser, but the intro and conclusions should always be simplified.

How long should sentences be?

A practical target is about 20 words on average, alternating short and longer sentences. The problem is not one long sentence but several in a row.

Does it work for Ukrainian and Russian?

Yes. The readability checker supports Ukrainian, Russian and English, and the sentence-length and paragraph-density rules apply to each of them.

Is my text stored?

Your text is processed for the analysis and never published. The tool is free and needs no signup for a basic check.

Next step

Continue in Content and copy

Keyword Density Word and phrase frequency HTML Cleaner Strip Word markup Text Analyzer Keyword density and semantics Text Quality Water content and filler

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