For node it looks surprisingly disappointing right now, the only real candidates being the packages @saschazar/wasm-avif (v1.0.0) and avif (v0.0.1-alpha2) — I'll probably never understand the ecosystem and community, the format is out for some time and fully supported in the most widely used browser, yet barely noticeable support in the JS world.
If you're okay with a non-node/js solution, use https://github.com/kornelski/cavif-rs - it does the job for me pretty well.
For node it looks surprisingly disappointing right now, the only real candidates being the packages @saschazar/wasm-avif (v1.0.0) and avif (v0.0.1-alpha2) — I'll probably never understand the ecosystem and community, the format is out for some time and fully supported in the most widely used browser, yet barely noticeable support in the JS world.