Is Readability Analyzer free?

Yes. Every VersaTools tool is completely free — no account, no watermark, and no sign-up required.

Is my writing uploaded anywhere?

No. Scoring, syllable counting, and highlighting all run locally in your browser, so your text never leaves your device.

What score should I aim for?

For a general audience, a Flesch Reading Ease of 60 to 70 (Standard) is a solid target. Higher is easier; technical writing often sits lower. The band and grade caption help you judge fit.

How does it decide a paragraph is 'Dense'?

Any paragraph with more than four sentences is flagged as Dense and marked with a red border, since long blocks are harder to skim and usually hide two smaller ideas.

Are the syllable and sentence counts exact?

They're close estimates. Syllables are counted with vowel-group heuristics and sentences are split on punctuation with common abbreviations protected, which is accurate enough for reliable Flesch-Kincaid scoring.

Readability Analyzer

Text & Linguistics

Score text complexity with Flesch-Kincaid reading metrics.

Your text

Readability score

Paste some text to get a Flesch Reading Ease score, grade level, and skimmability report.

Tool Overview & Guide

What is Readability Analyzer?

Readability Analyzer scores your writing with the Flesch Reading Ease scale and estimates its grade level, then shows you where to tighten it. It counts words, sentences, paragraphs, and reading time, and a skimmability preview flags dense paragraphs and bolds the key phrases it detects. Paste an article, email, or draft and watch the analysis update live. Everything runs in your browser, so your text is never uploaded.

Technical Specifications & Supported Formats

Processing Engine:Client-side Native JavaScript & WebAssembly

Privacy & Security:100% In-Browser (Zero File Upload)

Supported Formats:All Standard Formats & Code Text

Max File Limit:100 MB

How to use Readability Analyzer

3 simple steps to complete your task directly in your browser:

Paste your text
Drop an article, email, or blog draft into 'Your text', or click Load example to try a sample. The analysis updates live as you edit.
Read the ease score
See your Flesch Reading Ease number and its band, from Very difficult to Very easy, on a color-coded scale. A caption translates the grade level into an approximate reader age.
Check the stats
Tiles show words, sentences, paragraphs, and estimated read time, plus average words per sentence and average syllables per word — the two levers that move the score most.

Common uses

Check whether a blog post reads at a general-audience level
Simplify a dense email before you send it
Spot paragraphs that pack in too many sentences
Estimate how long an article takes to read
See which key phrases your draft emphasizes
Lower the grade level of documentation or help content

Why choose VersaTools

100% private

Your files are processed inside your browser and are never uploaded to a server.

Free, no account

No sign-up, no watermark, no paywalled “premium” tier. Just open a tool and use it.

Instant

No upload, no queue, no server round-trip — work starts the moment you drop a file.

Runs in your browser

Built on open web standards. Works on any modern desktop browser, nothing to install.

No upload size caps

Nothing leaves your device, so there’s no server file-size limit — only your machine’s memory.

Yours to keep

Results download straight to your device in clean, standard file formats.