AZW3 – Kindle Format 8
AZW3 (Kindle Format 8) is Amazon's newer ebook format with better typography and HTML5/CSS support than MOBI.
More AZW3 conversionsDrop your AZW3 files here
or click to choose AZW3 files · up to 95MB each
How to convert AZW3 to FB2
- Choose your files. Click Select File or drag your AZW3 files into the upload box. You can add many at once.
- Pick the settings. FB2 is already selected as the output format. The conversion starts as soon as a file is added.
- Download. Each file appears in the list when it is ready. Download them one by one, or all together with Download all.
FB2 – FictionBook
FB2 (FictionBook) is an XML ebook format popular in Russia and Eastern Europe.
More FB2 conversionsConverting AZW3 to FB2
- DRM-protected books cannot be converted. PDF input works best for text-based PDFs.
Frequently asked questions
How do I convert AZW3 to FB2?
Click Select File or drop your AZW3 file onto the upload box. The converted FB2 appears in the list below with a download button. You can add many files at once and download them together as a ZIP.
Is it really free?
Yes. There is no sign-up and no watermark. To keep the service available for everyone there is a 95MB limit per file and a cap on how many files one connection can process in a short period.
Are my files stored?
Your upload is used only to make the converted file. Images are processed in memory; other files are written to a private temporary folder that is deleted as soon as the conversion finishes. Nothing is kept after the result has been sent back.
Will quality drop?
For images, a little, by design: the image is re-encoded at the Quality you choose (default 75%). Audio and video are re-encoded with high-quality settings; documents keep their text and layout as far as the target format allows. Converting never restores detail that is already missing from the original.
How this works: your file is uploaded over HTTPS and converted on this server with open-source engines (libvips for images, FFmpeg for audio and video, LibreOffice and Pandoc for documents, Calibre for ebooks, Ghostscript and Inkscape for PDF and vector files). Images are processed in memory; other files use a private temporary folder that is deleted as soon as the conversion finishes.