Free AI Content Humanizer
Multi-stage humanization: reorder for human flow, deep rewrite, and polish—powered by Gemini API on the server.
Tip: use the Word Counter to measure length. Humanization uses three Gemini stages on the server—review output and Gemini's policies before pasting sensitive text.
Simple: up to 1,000 words · Advanced: up to 2,500 words
About AI Content Humanizer
This tool runs a three-step pipeline (structure → rewrite → polish) using Gemini API on your server. It is designed to change paragraph order and sentence rhythm, align tone, and fix grammar—not shallow synonym swaps. You need GEMINI_API_KEY in your deployment; your text is sent to Gemini for processing (see privacy FAQ). Always review the output.
How it works (technical)
Stack: Next.js Route Handler POST /api/humanize → Gemini via @google/generative-ai SDK (default API v1beta; tries multiple model ids on 404).
Stage 1 (low temperature): reorder/merge/split paragraphs for human flow; stage 2: rewrite with strength + tone; stage 3: grammar and tone consistency.
Regenerate raises rewrite-stage temperature for more variation.
Requires GEMINI_API_KEY server-side only; never commit keys to git.
When to use it
Draft tightening
Take a rough outline and get alternate phrasing before you edit manually.
Tone alignment
Shift formal vs casual to match a brief or audience.
Sectioned long documents
Split over the word limit, run per section, then stitch—same pipeline for each chunk.
How to Use AI Content Humanizer
- 1Configure GEMINI_API_KEY from Google AI Studio (.env.local for local dev), optional GEMINI_MODEL / GEMINI_API_VERSION (default v1beta; server tries several model ids if one 404s), then restart.
- 2Paste your draft (up to 1,000 words in Simple or 2,500 in Advanced).
- 3Choose humanization strength (Low / Medium / High) and tone (Formal human / Casual human).
- 4Click Humanize. Large jobs can take 30–90 seconds. Use Regenerate for a different wording pass.
- 5Copy or clear when done.
Key Features
- Three chained stages: structure, human rewrite, copy polish
- Strength and tone controls
- Regenerate for alternate phrasing (higher creativity on rewrite stage)
- Simple / Advanced word limits
- Clear and copy controls
Benefits
- •Less “template AI” flow by reordering paragraphs for impact-first reading when it fits
- •Varied sentence length and consistent tone after the polish stage
- •Fewer broken-grammar artifacts than naive find-and-replace humanizers
Frequently Asked Questions
Does this guarantee passing AI detectors?
No. Quality is much higher than regex-only tools, but detectors change and no product can promise a pass. Treat this as a strong draft and edit in your own voice.
Where does my text go?
It is sent from your browser to your WebTooly server, then to Gemini API for processing. It is not “only in the browser.” Do not paste secrets or personal data you cannot share with Gemini.
What is the difference between Simple and Advanced?
Only the maximum word count per request (1,000 vs 2,500). The same pipeline runs for both.
Why does it take so long?
The app runs three model calls in sequence (structure, rewrite, polish). That improves coherence but takes longer than a single shortcut prompt.
Is there a word limit?
Yes. Simple: 1,000 words. Advanced: 2,500. Split longer documents into sections.