Download and install the latest version of Filestar.
Right click on one or more Avif file(s) on your desktop and select Convert with Filestar.
Type convert to rb in the search box.
Press Convert.
Or let an AI agent do it: filestarcli -i photo.avif -c "convert to rb" (how).
Pictures - File Explorer─☐✕
This PC › Pictures
Home
Desktop
Downloads
Documents
Pictures
Music
.avifMarket.avif
.heicBeach.heic
.pdfReceipt.pdf
.docxNotes.docx
Filestar*Help✕
Drop files here to get started
ConvertMergeCompressExtractMoveZip
Let your AI agent convert AVIF to RB
Claude Code, Codex, Cursor and other agents can do this with Filestar. This skill runs in Filestar's cloud and needs a paid Filestar plan.
Install Filestar and add it to your agents:
npm install -g filestar
filestarcli agent install
Then ask your agent:
“Convert the AVIF files in my Downloads folder to RB”
Or run it yourself:
filestarcli -i photo.avif -c "convert to rb"
Runs in Filestar's cloud and needs a Filestar plan.
Can my AI agent convert AVIF to RB?
Yes, with a paid Filestar plan: this skill runs in Filestar's cloud. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i photo.avif -c "convert to rb".
It is an image compression codec file with the same quality as .jpeg, but that is ten smaller. It supports HDR (High Dynamic Range). SDR (Standard Dynamic Range), and WCG (Wide Color Gamut) images. Also, it contains both the image sequences and image items. The only pitfall is that a few applications support it.
RB is an eBook file format that was developed by NuvoMedia. It was first used in Nuvo Media’s Rocket eBook device. It contains the contents of the book in HTML form.
