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Data·yze Readability Analyzer
What it is
Data·yze Readability Analyzer estimates how readable text may be for a chosen audience. It reports Flesch-Kincaid Reading Ease, Gunning Fog Index, Kincaid Grade Level, SMOG, Dale–Chall, and Fry Reading Graph metrics. A paragraph view provides statistics and shows how readability varies through a document. Users can enter text or upload a file, then save or download their input. The tool also lists sentence analysis and clarity recommendations, and links to a difficult and extraneous word finder, passive voice detector, and spell checker. A separate Website Readability Analyzer estimates readability for an individual webpage and average readability across a site; its crawler is limited to 1,000 pages per user per day. Data·yze says analyzed passages are not collected or stored, though passage length is retained for performance analysis. Uploaded writing-tool files are cached and automatically removed within seven days, possibly sooner. Third-party advertising and analytics services may use tracking cookies. The maker cautions that scores are heuristic estimates, not measures of writing quality, and that the tool works best with plain text. It is a free, ad-supported web app.
For and against
For
- Reports six named readability metrics.
- Paragraph view shows how readability varies through a document.
- Text can be entered or uploaded, then saved or downloaded.
- Free, ad-supported web app.
Against
- Readability scores are heuristic estimates, not writing-quality measures.
- Works best with plain text.
- Website crawler is limited to 1,000 pages per user per day.
- Uploaded files may be cached for up to seven days.
The verdict
Data·yze Readability Analyzer offers several established readability estimates and paragraph-level analysis at no charge. Treat its results as rough indicators, and consider its file retention and advertising-cookie disclosures when using it.
Who it suits
This tool suits writers, editors, and educators who want estimated readability measures for text or webpages. It may also help users reviewing readability across a document paragraph by paragraph.
Plans and prices
Readability Analyzer
Free ad-supported web app; no usage limit stated on the Readability Analyzer page
Read 5 Oct 2026 · datayze.com
On the record
- Ads and analytics
- Data·yze says it uses third-party advertising and analytics services, including Google AdSense, Google Analytics, and Amazon Affiliates, which may use tracking cookies.datayze.com · read 5 Oct 2026
- Business model
- Data·yze says its existing catalog of free web apps will remain available in free, ad-supported versions.datayze.com · read 5 Oct 2026
- Crawler limit
- The website analyzer’s crawler is limited to 1,000 pages per user per day, and pausing and resuming it on another day can work around the cap.datayze.com · read 5 Oct 2026
- Limitations
- The maker says readability metrics are heuristic estimates, are not a measure of writing quality, and the analyzer works best with plain text.datayze.com · read 5 Oct 2026
- Maker history
- Data·yze says Dr. Sarah Tyler began experimenting with web apps in the late 1990s, including an early version of the Readability Analyzer.datayze.com · read 5 Oct 2026
- Paragraph analysis
- A paragraph-level view provides readability statistics and shows how readability changes across a document.datayze.com · read 5 Oct 2026
- Privacy
- Data·yze says passages analyzed by its writing assistance apps are not collected or stored, though passage length is stored for performance analysis.datayze.com · read 5 Oct 2026
- Purpose
- Estimates how readable a passage of text is for a given audience.datayze.com · read 5 Oct 2026
- Readability metrics
- It reports estimates using Flesch-Kincaid Reading Ease, Gunning Fog Index, Kincaid Grade Level, SMOG, Dale–Chall, and Fry Reading Graph metrics.datayze.com · read 5 Oct 2026
- Related writing tools
- The page links to a Difficult and Extraneous Word Finder, Passive Voice Detector, and Spell Checker.datayze.com · read 5 Oct 2026
- Support
- The contact page accepts bug reports and feature requests, and says typical email response time is a couple of weeks.datayze.com · read 5 Oct 2026
- Text input
- Users can enter text or upload a file, and can save or download their inputted text.datayze.com · read 5 Oct 2026
- Uploaded files
- The privacy policy says writing-tool uploads are cached to improve processing time and automatically expunged within seven days, possibly sooner.datayze.com · read 5 Oct 2026
- Website analysis
- The Website Readability Analyzer estimates the readability of an individual webpage and average readability across a site.datayze.com · read 5 Oct 2026
