EPUB to FB2
Upload a EPUB file and download it as FB2. Free to start.
- Sent over HTTPS · link expires in 24 h
How it works
- Step 1:
Drop the EPUB file on the orange block above, or press “Choose EPUB”.
- Step 2:
Press “Convert to FB2”. The block shows the progress while the server converts the file.
- Step 3:
Press “Download” to save the FB2 file. On Free the link works for 24 hours.
How EPUB to FB2 conversion works
EPUB is an ebook format: it packages HTML, CSS, and images in a zipped OPS container as an ISO-standardised ebook format that reflows text to fit any screen width. FB2 is an ebook format that stores data in the FB2 format. This conversion changes the file's encoding, compression method, and supported feature set. Reflowable text, chapter structure, and the table of contents carry across; embedded fonts transfer when the target format supports them. Converting between these two formats is common when the source application does not support FB2 natively or when the target platform only accepts FB2. 1converter processes this conversion server-side using open-source tools. Files are transferred over HTTPS, converted on secure cloud servers, and returned through a private download link that expires after 24 hours on Free.
Sources and specifications
When to convert
What the FB2 file is good for and why people convert to it.
- Preserves text layout from EPUB XHTML while translating it into FB2’s XML structure
- Keeps EPUB metadata (title, authors, series) mapped into FB2 tags for easier organization
- Convert an EPUB downloaded from a store into FB2 for an e-reader that prefers FB2
- Batch-convert a personal EPUB library so all books share a consistent FB2 structure
Where your file goes
- It travels to our server over an encrypted HTTPS connection and is converted there.
- The FB2 file comes back as a private link. It stops working after 24 hours on Free and 7 days on paid plans, and then the files are deleted.