WebFX Readability Test Tool analyzes webpage text and reports six readability scores, including Flesch Kincaid Reading Ease, Flesch Kincaid Grade Level, Gunning Fog, Coleman Liau, Automated Readability Index, and SMOG. You can submit a URL, type or paste text, upload a TXT, DOC, or DOCX file, or refer the tool from a website. Results include word and sentence counts, complex-word count and percentage, average words per sentence, and average syllables per word. Highlights identify hard and very hard sentences, passive voice, and adverbs. For webpage tests, you can analyze the whole page or target a specific area using a page element. HTML in text input is accepted and removed before analysis. The tool is free on the web, with a listed plan price of 0.00 USD per free and no free trial. WebFX was founded in 1995 and is headquartered in Harrisburg, Pennsylvania. Pages using React, Vue, or JavaScript may show a word count of zero; URL analysis also cannot reach gated content. WebFX suggests pasting the text in those cases.
Who it is for
It suits developers, copywriters, marketers, usability assessors, and SEO experts who want readability scores or text statistics. It is also useful when a reader needs to check pasted text or supported document files instead of a webpage URL.
What is good
- Six readability formulas
- Accepts URLs, pasted text, and documents
- Highlights difficult sentences and passive voice
- Can target a specific page area
- Free to use on the web
What to know first
- No free trial
- Some dynamic pages may return zero words
- Cannot score gated content by URL
Verdict
The tool offers several ways to submit text and provides both scores and sentence-level highlights. For dynamic or gated pages, pasting the text is the suggested alternative to URL analysis.
WebFX Readability Test Tool plans and pricing
All plansCompared on AI readability checkers
- Free plan
- Yes
- Readability scores
- 6 scores
- Grade-level analysis
- Yes
- Sentence complexity
- Yes
- Input formats
- text



