Best Readability Checkers 2026

ProWritingAid may suit English-language writers who want grammar and style suggestions in supported writing apps.

This API suits developers or content teams who need readability scores for documents or public web pages.

RAT suits readers and editors working with German .docx text who can use a command-line tool.

The tools may suit writers, editors, educators, marketing professionals, healthcare providers, and government agencies.

It suits students, translators, writers, and others who want statistical or readability information about English text.

It suits writers, editors, students, and readers who want browser-based text statistics and readability measures.

It suits educators and others who want to estimate text difficulty and compare materials with students’ reading ranges.

The tool suits writers, editors, educators, researchers, and SEO specialists who want readability estimates for English text.

This checker suits writers and editors adjusting English essays or web copy to a target reading level.

It suits educators, students, publishers, healthcare teams, and military or government users analyzing document readability.

This tool suits writers, editors, and educators who want estimated readability measures for text or webpages.

It suits teachers and writers who want quick readability scores and text statistics in a browser.

It suits writers and editors who want a quick English readability estimate without signing up.

This checker suits writers reviewing English copy for reading difficulty and sentence patterns.