HumanPen is a document-oriented AI text humanization tool whose main purpose is to rewrite AI-generated text to make it sound more natural, while preserving the original document's formatting, citations and intended meaning as much as possible.
Main capabilities
- Document-level humanization: Supports DOCX, PPTX and TXT formats, with no word limit, and the original styles remain unchanged when the file is returned.
- Precise targeted rewriting: You can select paragraphs yourself, or import an existing Turnitin / iThenticate AI detection report to rewrite only the flagged text, and you are billed only for the words actually rewritten.
- Free rewrite guarantee: If the score is still not below 20% after re-detection, you can import a new report and the remaining flagged paragraphs will continue to be rewritten for free.
- Preservation of key content: Numbers, units, formulas, citations, terminology and the strength of claims are kept as they are, with only the wording naturally reconstructed, and no spelling or grammar errors are deliberately introduced to deceive detectors.
- Multiple document processing options: In addition to humanizing rewrites, it also supports converting citation formats, shortening documents to a target length, and translating files while keeping the layout intact.
- Integration capabilities: Through Skill, MCP and API, the humanization feature can be integrated into your own AI assistant or automated workflow with one line of code, and can be called from anywhere.
How to use After visiting the website, you can click to upload or drag and drop files onto the page. Registration gives 100 free credits and unlocks a first-order discount. Billing is based on 1,000 words consuming 100 credits. When rewriting, users can select paragraphs themselves, or import a Turnitin / iThenticate report to precisely target the text that needs polishing, and the system charges only for the words actually rewritten.
Applicable scenarios
- Need to rewrite AI-generated academic or technical documents to sound more natural while preserving citations, formulas, terminology and formatting.
- Already have a Turnitin or iThenticate AI detection report and want to make precise edits to the flagged paragraphs.
- Need to handle citation format conversion, shortening to a target length, or layout-preserving translation in DOCX, PPTX, TXT and other documents.
- Want to integrate text humanization capabilities into your own AI assistant or automated workflow.
Limitations and information not yet provided
- Official materials do not state the supported interface languages, specific pricing plans, credit purchase prices, refund policy, or details of data privacy handling.
- No complete feature comparison beyond the free trial is provided, nor is it stated whether formats other than DOCX, PPTX and TXT are supported.
- Specific technical documentation, usage limits and availability regarding the API, MCP and Skill are not yet elaborated in the materials.
