about Free Convertmd
Free Convertmd is a security-first, high-performance web utility built for developers, writers, and compliance officers who need to convert documents to Markdown without leaking sensitive data to third-party cloud servers.
The Problem
Traditional online conversion sites (like Zamzar or CloudConvert) require you to upload your PDF, doc, or text files to their cloud servers. For corporate reports, code files, or medical records, this presents major security and compliance risks. Furthermore, these platforms throttle your usage, showing annoying advertisements and requiring premium payment subscriptions.
The Free Convertmd Way
We built Free Convertmd to run entirely client-side. By using modern web features like WebAssembly and client JavaScript parsing frameworks (such as PDF.js and Turndown), your files never leave your device. Your computer does all the heavy lifting, delivering instant conversions with 100% data security.
under the hood.
Our architecture relies on lightweight, robust parsing engines that compile content structure in real-time inside your browser:
Spatial text layer extractor & coordinates reader
Pasted visual content & HTML source compiler
High-fidelity Markdown editor to HTML preview renderer
frequently asked questions.
Are my files really secure here?
Yes, completely. Because our application works entirely client-side, the files you upload or text you paste are read inside your local browser memory space. No document or data packets are sent over the network. You can even load this website, turn off your internet, and continue converting files.
Why is the output empty for some scanned PDFs?
This tool reads the **vector text layer** of PDF files. If a PDF is a scanned picture or image without digital text selection metadata, standard browser parsing cannot extract text without a heavy OCR (Optical Character Recognition) package. If you have scanned files, you can copy-paste the text layers or run an offline OCR reader on your machine first.
What is the file size limit?
We support file sizes up to **100MB**. Standard browser processes can easily handle large text collections, but very large files might require some seconds of processing.