About FreeTextDetector.com
FreeTextDetector.com provides free, privacy-first tools for detecting AI content and improving your writing. Unlike most writing AI tools, we don't rely on generative large language models or send your text to paid external AI APIs.
Our Technology
Our rewriting engine uses a combination of established NLP techniques:
- spaCy — tokenising, POS tagging, dependency parsing, named entity recognition
- Curated rewriting dictionaries — phrase and word replacements, applied as named, inspectable rules
- lemminflect — verb and noun inflection, so rewritten words keep the right tense and number
- sentence-transformers — local semantic similarity measurement
- LanguageTool — open-source grammar checking, self-hosted
- textstat — eight readability formulas (Flesch, Flesch–Kincaid, Gunning Fog, SMOG, ARI, Coleman–Liau, Linsear Write, Dale–Chall)
Our Values
- Privacy: We don't store your text. Period.
- Transparency: No black-box AI. Rule-based, explainable transformations.
- Free: Core tools are free with no account required.
- Quality: Every rewritten sentence must keep its names, numbers and negations and stay above a similarity threshold, or the original is kept. Review the result before using it.
Get Started
Try our AI Humanizer — it's free, takes 10 seconds, and requires no sign-up.