Add PixKB to your home screen — open it like an app, works offline.
AVIF to JPG Converter
AVIF is the newest web image format — sites serve it because it's dramatically smaller, and right-click-save hands you a file that photo editors, upload forms, and older apps then refuse to open. The fix takes one step: convert it to JPG. This converter does it entirely in your browser — the file never leaves your device, because there's no server involved at all.
The tool below is pre-set to JPG output. PNG and WebP outputs are one dropdown away, and multiple AVIF files convert in a single run with a ZIP download.
or drop it anywhere in this box
JPG, PNG, WebP, HEIC, GIF, BMP, SVG, AVIF · everything runs on your device, nothing is uploaded
Custom target, 2–10240 KB
Match the portal's rule
Converting PNG with transparency to JPG fills the background white.
One tap applies the exact dimensions, format, and file-size rule for the form. Verified presets are checked against the official source.
0 KB— KB
ORIGINAL—
RESULT—
Everything runs in your browser using the HTML5 Canvas — your photo is never uploaded to any server.
AD SLOT — BELOW TOOL
Why you keep running into AVIF files
Browsers and CDNs negotiate the smallest format a browser can display, and modern browsers accept AVIF — so that's what sites increasingly send. Saving an image saves whatever was delivered. The mismatch is that display support arrived years before editing support: your browser shows AVIF fine, but the form or app you're feeding it to may not. Converting to JPG restores universal compatibility; if the destination has a file-size cap, finish with the exact-KB compressor.
A note on quality
AVIF-to-JPG re-encodes an already-compressed image, so keep the quality slider high (the default 92% is right for almost everything). The result is typically larger in bytes than the AVIF original — that's expected; JPG is the older, less efficient format. You're trading bytes for compatibility.
Frequently asked questions
Is anything uploaded when I convert?
No. Your browser decodes the AVIF and re-encodes it as JPG locally. PixKB has no upload endpoint — the site works offline after first load.
Can I convert several AVIF files at once?
Yes — select multiple files; they convert in one run and download as a single ZIP, up to roughly 100 files depending on your device's memory.
Why is the JPG bigger than the AVIF was?
AVIF is a newer, more efficient format — the same image simply costs more bytes as a JPG. If the size matters, compress the result to an exact KB target afterwards.