Compress a Photo to 100 KB (and What to Do When It Can’t)
A 6.8 MB photograph at a 100 KB target: JPEG lands on 102 KB and the tool tells you it fell short, AVIF makes it at 91.4 KB. The format is the lever, not the quality slider — and nothing is uploaded.
Duración: 2:50Publicado:
Lo que aprenderás
Pick a target size — the tool picks the quality
6.8 MB → 102 KB on JPEG, and it says it missed
Why the quality slider is already out of room
AVIF: 91.4 KB, within the limit, same photo
The catch — not every upload form accepts AVIF
Nothing is uploaded; the network log is shown
En este vídeo
A 6.8 MB photograph at a 100 KB target: JPEG lands on 102 KB and the tool tells you it fell short, AVIF makes it at 91.4 KB. The format is the lever, not the quality slider — and nothing is uploaded.
Every so often a form demands a photo under 100 KB. This is a 6.8 MB street photograph — dense texture, the hard case for any compressor — taken to that target in the browser. The first attempt misses: JPEG lands on 102 KB, and rather than shipping a 102 KB file with a 100 KB label on it, the tool says "Could not reach 100 KB — this is the smallest this image goes without becoming unreadable." The quality is already floored at 20 and the picture has already been shrunk to 2,166 pixels across to get that small, so there is nothing left to take. The fix is the container, not the slider: the same photo at the same target as AVIF comes out at 91.4 KB, within the limit. WebP, for the record, came out worse than JPEG here — which is why this video quotes measurements rather than rules of thumb. Everything runs on your own processor, so the photo is never uploaded, and the browser’s network log is shown at the end.
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Transcripción completa
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A form wants your photo under a hundred kilobytes. This one is six point eight megabytes. Here is the part nobody tells you: the first thing you try will miss — and the tool will admit it.
Ninety seconds, one photograph, and a trick that has nothing to do with the quality slider. Free, no account, and the picture never leaves your browser.
6.8 MB
You do not pick a quality here. You pick a size, and there is a preset for a hundred kilobytes. Read the line under it: target size picks the quality for you, and never goes over the limit you set.
6.8 MB → 102 KB · 99% smaller
Look at what it says. Could not reach a hundred kilobytes — this is the smallest this image goes without becoming unreadable. It missed, and it told me. It did not hand me a hundred and two kilobyte file with a hundred kilobyte label on it.
It is not holding back, either. The quality is already down at twenty, and it has already shrunk the picture to twenty-one sixty-six pixels across to get this small. There is nothing left to give.
So stop turning the quality down, and change the format instead. Not WebP — I tried, and on this photograph WebP came out two kilobytes worse than JPEG. AVIF.
6.8 MB → 91.4 KB · within your 100 KB limit
One catch, and it matters: AVIF is newer, and a form that demands a hundred kilobytes might only accept JPEG. If it does, take the hundred and two — or crop something out of the frame, which is the one lever the compressor does not have.
And the photograph never went anywhere. This is the browser’s own record of everything it fetched while both of those ran — not one request carried the picture off this machine.
Free, no account, no upload. Pick a size, not a quality — and if it tells you it cannot get there, believe it. See you in the next video.
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