CBR to EPUB Converter
Turn a RAR-based CBR comic archive into an EPUB e-book for any e-reader or app.
Complete the security check to begin
About Converting CBR to EPUB
CBR is a comic archive built on proprietary RAR compression — essentially your comic’s pages stored as sequential images inside a RAR file. It works in dedicated comic readers but is awkward everywhere else, and RAR support is shrinking across the software world. Converting to EPUB repackages the same pages as a standard e-book, so your comic slots neatly into the library of any e-reader or reading app (Apple Books, Google Play Books, Kobo, most Android and iOS readers) alongside your other titles, complete with cover thumbnail and page navigation.
PrivConvert extracts the RAR-based CBR with the open-source unar tool inside a locked-down, network-free sandbox, screens the pages against decompression-bomb and malicious-path protections, and builds an image-based EPUB that preserves your original page order and resolution. The conversion happens entirely in memory and your file is destroyed the instant the EPUB is ready — no storage, no logging, no reuse.
Common use cases
- Adding a comic to an e-reader library that expects EPUB, not CBR
- Reading a comic in Apple Books, Google Play Books, Kobo or a mobile reader app
- Escaping the proprietary RAR container for the open EPUB e-book standard
- Getting a cover thumbnail and shelf entry for a comic in your reading app
- Sharing a comic as a standard e-book anyone’s reader can open
Tips for best results
- EPUB from a comic is image-based and fixed-page — pages are pictures, so there is no text reflow, which keeps artwork and lettering intact.
- Page order follows the file names inside the CBR, so sequentially numbered pages convert in the right reading order.
- For the sharpest result on high-resolution screens, start from the highest-quality CBR you have.
- If your reader or printer works better with fixed pages, consider CBR to PDF instead; files up to 250 MB are supported either way.
How to Convert CBR to EPUB Online
Here is how a CBR → EPUB conversion works on PrivConvert, from start to finish. What you gain with EPUB: reflowable text for any screen.
Drag and drop your file into the upload area, click to browse your device, or paste a URL to a file hosted online. You can upload files up to 250 MB and batch convert up to 20 files at once.
Once uploaded, the conversion from CBR to EPUB starts automatically. The process runs entirely in an isolated environment - your data never leaves the secure pipeline.
Your converted file is ready instantly. Click the download button to save it to your device. The file is deleted from memory immediately after download.
What makes this CBR-to-EPUB converter different
Privacy here is not a checkbox. Every CBR-to-EPUB conversion is engineered so your data never lingers, leaks or gets reused.
Runs in any modern browser on Windows, macOS, Linux, Android and iOS — no install, plugin or desktop software needed.
Each job runs in an isolated in-memory sandbox, so most conversions finish in seconds instead of waiting in a queue.
We never keep a copy. Once your EPUB is delivered, both the original and the result are gone — there is nothing left to leak or misuse.
Every conversion runs in its own locked-down process with no network access, so files can never leak or interfere with one another.
CBR vs EPUB - Format Comparison
| Feature | CBR | EPUB |
|---|---|---|
| File extension | .cbr | .epub |
| Supported by PrivConvert | Yes (as input) | Yes (as output) |
| Privacy-safe conversion | In-memory, zero storage | |
| Max file size | 250 MB per file | |
| Batch support | Up to 20 files simultaneously | |
Why people pick PrivConvert for EPUB
Thousands of people trust PrivConvert with their files because privacy here is structural — enforced by how the service runs, not just promised.