DocToPDF was born out of frustration with clunky, ad-filled, upload-your-private-docs-to-our-server converters. We built something better: fast, private, browser-based, and free.
Most online PDF converters upload your files to a remote server, process them there, and delete them "after a while." That means your private documents — contracts, resumes, medical records, personal writing — pass through someone else's infrastructure. That always felt wrong to us.
DocToPDF was built with one rule: your files never leave your browser. Everything runs locally using modern JavaScript APIs. The conversion happens on your machine, in your browser, in seconds.
We support 17+ formats because people work in all kinds of tools — LibreOffice (ODT), Amazon Kindle (AZW/AZW3), eBook readers (EPUB), legacy Word (DOC), rich text (RTF), spreadsheets (CSV), and more. If you have a file, we want to help you convert it.
Your files stay on your device. No server uploads, no logs, no "we delete files after 24 hours" promises. We never see your data.
Browser-based conversion is fast. No waiting for upload progress bars, no server queue. Just instant conversion in your local machine.
PDF conversion should not cost money. We keep the tool free through advertising so everyone — students, freelancers, businesses — can use it.
From DOCX to AZW3, from India to the US, we support the formats real people use — not just the popular ones. Rare formats welcome.
DocToPDF uses powerful open-source JavaScript libraries running entirely in your browser. When you upload a file, it's read using the browser's built-in File API — never sent over a network. Depending on the format, we use mammoth.js for Word documents, jsPDF for text-based formats, html2pdf.js for rich HTML rendering, and custom binary parsers for eBook formats like AZW and EPUB.
The resulting PDF is generated as a binary blob directly in memory, and a download link is created using the browser's Blob URL system. The whole pipeline is local — no network requests to any conversion server.
No sign-up. No upload. Just drop your file and get your PDF.
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