Readability Checker

1. Paste or type your text into the input box.
2. View your scores — six readability metrics update in real time.
3. Check the heatmap — sentences are color-coded by difficulty.
4. Read the tips — actionable suggestions appear based on your scores.
5. Edit and re-check — improve your text and watch your scores change live.

Readability formulas measure how easy text is to read by analyzing sentence length, word length, and syllable count. Flesch Reading Ease (0–100, higher = easier) is the most widely used. Flesch-Kincaid Grade translates readability into a US school grade level. Gunning Fog and SMOG focus on complex words (3+ syllables). Coleman-Liau uses character count instead of syllables, making it better for non-English text. ARI combines characters per word and words per sentence.

Google favors content that users can easily read and understand. Studies show top-ranking pages typically have a Flesch score between 50 and 70 (grade 7–9). SEO plugins like Yoast and Rank Math include readability as part of their content score. Shorter sentences, simpler words, and clear structure improve both readability and search rankings.

1. Shorten your sentences — aim for 15–20 words per sentence on average.
2. Use simple words — replace complex words with everyday alternatives.
3. Break up long paragraphs — use subheadings, lists, and white space.
4. Write in active voice — "The team completed the project" beats "The project was completed by the team."
5. Read aloud — if you stumble, your readers will too.

This tool runs entirely in your browser using JavaScript. No text is ever sent to any server. There are no accounts, no watermarks, and no usage limits. Your content stays completely private.