Private, Browser-Based File Converters
Your files never leave your device. Every conversion runs locally in your browser using WebAssembly and JavaScript. No uploads. No accounts. No watermarks. Forever free.
Books & Documents
EPUB → PDF
Convert ebooks to PDF with chapters preserved.
PDF → EPUB
Turn PDFs into reflowable ebooks for any reader.
CBZ → PDF
Convert comic book archives to PDF, pages in correct order.
EPUB → TXT
Extract clean plain text from any EPUB.
PDF → JPG
Render each PDF page as a sharp image.
Images → PDF
Combine JPG, PNG, or WEBP into one PDF.
Images
HEIC → PDF
Combine iPhone photos into one PDF.
HEIC → JPG
iPhone HEIC photos to universal JPG.
HEIC → PNG
iPhone HEIC photos to lossless PNG.
JPG → PNG
Convert JPG photos to PNG.
JPG → WEBP
Compress JPG to smaller WEBP for the web.
PNG → JPG
Convert PNG to smaller JPG.
PNG → WEBP
Compress PNG to WEBP without quality loss.
WEBP → JPG
WEBP to JPG for compatibility.
WEBP → PNG
WEBP to lossless PNG for editing.
Why use FreeBookConvert?
100% Private
Conversions happen on your computer. Nothing is uploaded.
No Limits
No file size caps, no daily quotas, no signup.
No Watermarks
Your output is clean and ready to use.
Works Offline
Once the page loads, you don't need an internet connection.
FAQ
Are my files really not uploaded?
Correct. All conversion happens with JavaScript and WebAssembly running locally in your browser. You can verify by disconnecting from the internet after the page loads — conversions still work.
Is there a file size limit?
The only limit is your device's memory. Files up to a few hundred MB typically work fine on modern computers.
Why is this free?
The site is supported by unobtrusive ads. We don't need servers to process your files, so costs are minimal.
Does it work on mobile?
Yes, but larger files convert faster on a desktop or laptop.