Feature
Format preservation
DOCX in, DOCX out — bold, italics, headings intact. PDFs return as editable DOCX. Markdown and TXT pass through cleanly.
Manually reformatting humanized prose is the silent productivity killer of every paraphraser on the market. You upload a structured document, you get back a wall of plain text, you spend the next twenty minutes putting the bold and the headings back where they belong.
The product is only useful if you can paste the output straight back into the workflow you started in. Inksong is built around that constraint — format preservation is treated as a first-class requirement, not a nice-to-have.
How it works
What's happening under the hood
DOCX files are parsed with python-docx, paragraph by paragraph, preserving run-level formatting. A “run” in the DOCX model is a span of text with consistent formatting — a bold phrase inside a paragraph is a run; the surrounding plain text is another run. We humanize the text content of each run while keeping the run boundaries and their style attributes intact. Bold stays bold. Italics stay italic. Headings stay headings.
PDFs are a different problem. PDF is a layout language, not a content language — the file describes where glyphs sit on a page, not what the document structurally is. In-place PDF editing is impractical for that reason. We use pdfminer to extract the text content and then reassemble it as a DOCX with python-docx. You upload a PDF and get back an editable Word file you can continue working in.
Markdown and plain text pass through directly. For Markdown, the humanizer is aware of fenced code blocks, blockquotes, and list structures, so it doesn't rewrite code or strip the structural characters. For TXT, the text content is humanized verbatim with line breaks preserved.
The principle across all four formats is the same: we humanize the text inside the document, never the document structure around it. Headings, lists, blockquotes, and inline emphasis survive humanization because they were never inside the scope of the rewrite.
Example
See it in action
# Introduction This report examines the **primary factors** contributing to organizational efficiency. It is widely acknowledged that effective communication, *clear delegation*, and the implementation of robust feedback mechanisms are essential components of high-performing teams.
# Introduction This report looks at the **primary factors** behind why some teams actually get things done. Most people who study this end up at the same three places: people talk to each other well, someone *delegates clearly*, and there's a feedback loop that doesn't quietly break.
Benefits
Why this matters
No manual reformatting
Paste the output straight back into Word, Google Docs, or your Markdown editor. The structure you started with is the structure you end with.
Workflow-native
DOCX for Word users, DOCX-from-PDF for PDF users, Markdown for static-site writers. You don't change tools to use Inksong.
Roundtrip integrity
Headings, lists, blockquotes, bold and italic survive intact. The output looks like the input — with different prose inside the same skeleton.
Related features
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