Readability vs ToolsVale Readability Checker

Readability analyzes Markdown files and reports measures of reading complexity. It provides grade level, reading ease and estimated reading time calculated at 200 words per minute. The listed grade-level formulas are Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG and ARI. It also measures word and sentence metrics and can detect or require MkDocs-style admonitions. Results can be produced as a table, Markdown, JSON, summary or report. Configurable thresholds can fail CI checks when documentation exceeds them, and a.readability.yml file supports path-specific overrides. The project documents a Go command-line tool, Docker, a GitHub Action and pre-commit hooks, alongside CI/CD examples for GitLab CI, CircleCI and Jenkins. Pre-built binaries are listed for Linux and macOS in amd64 and arm64, and Windows in amd64. The project identifies its license as MIT and lists no paid plans. Its documentation cautions that scores measure word and sentence complexity, not accuracy, completeness, context or tone.

ToolsVale Readability Checker evaluates pasted text or URLs for readability, crawler access, and paragraphs that may need revision. It combines seven readability formulas into a weighted consensus grade and reports Readability, Content Clarity, and beta AI Citation Readiness scores. Paragraphs receive color-coded scores, with difficult sentences available for inspection, and the checker provides rule-specific fixes classified as deterministic, safe-with-review, or semantic. Crawler checks fetch pages as Chrome, Googlebot, GPTBot, ClaudeBot, and PerplexityBot to flag blocked access or substantial content differences. Users can compare up to 10 URLs side by side in one run, and share reports through links available for 48 hours. The checker is free, requires no account, has no daily limit, and does not put features behind a paywall; it allows 30 checks per minute per IP address. Requests are processed on a server over an encrypted connection, and uploaded content is deleted within one hour. Because page fetching uses raw HTML, client-side JavaScript content may not appear; the site suggests pasting visible text for JavaScript-heavy pages.