Drop images, paste, or click to choose

any format → AVIF

JPEG, PNG, WebP, GIF, BMP, AVIF… up to 25 MB each. Drop as many as you like — converted right here in your browser.

Left side Right side

Quality 50

Speed 6

0 = slowest, best quality per byte · 10 = fastest

Lossless

Engine

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Benchmark log

time	engine	bytes	enc	ms/enc	total	q/spd	source	output

total is the time the encoder itself took; the number in brackets, where the two differ, is the whole round trip you waited for — including uploading the source and downloading the result.

One server request encodes every resolution it stores, so its total covers several encodes (see enc) while an in-browser row covers exactly one. ms/enc divides that out — compare engines on that column, never on the total.

Both engines are the same encoder (libavif/aom, natively on the server and as WebAssembly in the browser), so their bytes agree to within about a percent — the difference between them is where the work happens and what it costs you in time, not how well it compresses.