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 resize in the search box.
Press Resize.
Or let an AI agent do it: filestarcli -i photo.avif -c "resize" (how).
Let your AI agent resize AVIF
Claude Code, Codex, Cursor and other agents can do this on your computer with Filestar. Your files stay on your machine.
Install Filestar and add it to your agents:
npm install -g filestar
filestarcli agent install
Then ask your agent:
“Use Filestar to resize AVIF in my Downloads folder”
Or run it yourself:
filestarcli -i photo.avif -c "resize"
Runs on your computer, so your files stay on it. Works on Windows, macOS and Linux. 50 free conversions with the npm install, no account needed.
Can my AI agent resize AVIF?
Yes. Install the Filestar CLI with npm install -g filestar and your agent can run filestarcli -i photo.avif -c "resize" on your computer, so your files stay on it.
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.
