All Tools
Check, count and improve your writing. Free to start, no signup.
AI Checkers
AI Detection Checker
Paste text for an instant AI score, per sentence.
OpenPlagiarism Checker
Score how similar your text is to existing sources.
OpenGrammar Checker
Catch grammar, spelling and clarity issues with suggested fixes.
OpenWord Count Checker
Count words, characters, sentences and reading time live.
OpenReadability Checker
Score reading ease and grade level; flag hard sentences.
OpenSummary Checker
Check a summary faithfully represents its source text.
OpenGuideline Checker
Check text against a style guide, rubric or brand rules.
OpenAI Writing
AI Humanizer
Rewrite AI drafts to read more naturally in a chosen tone.
OpenParaphrasing Tool
Rewrite text in a clearer, original phrasing across modes.
OpenAI Rewriter
Rewrite text to read clearer and stronger across styles.
OpenSummarizer
Condense long text into key sentences or a short paragraph.
OpenCitation Generator
Format APA, MLA or Chicago citations from source details.
OpenBrowser extension
Every tool, in your browser
Run any of these on text you select on any page. Same checkers, same reports. Get the extension →
