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FreeFileConvert uses tuned encoding for CBR to RB conversions, preserving clarity while trimming file size. Finished audio streams instantly across phones, tablets, desktops, and modern browsers without extra tweaks.
Upload CBR files from desktop, tablet, or cloud storage, queue multiple jobs, and let the converter finish autonomously. Return whenever convenient to download synchronized RB results on any device you rely on.
Process up to 5 files sized 1000 MB per batch without splitting queues manually. Mixed-format uploads convert together, producing consistent RB audio with dependable progress tracking.
CBR files are mainly composed of a series of image files, usually in a particular sequence, in lossless or lossy compressions (PNG and JPEG respectively) and are archived as a single or a group of files. The extension name seen on CBR format shows the type of archive used, for example, the archive type 7z may be used to store .cb7 file extension. The file names are usually numbered from the lowest to the highest number (in an ascending order).
Upload your ebook file in the CBR format from your device, Dropbox, or Google Drive.
Select RB as the output format and click Convert. Adjust optional settings if needed.
Download the converted ebook file. Each file stays available for up to 5 downloads.