Image compressor
Compress images to 50 KB
50 KB is preselected below — change it any time. Everything runs inside your browser: files are never uploaded, results are measured from the actual output, and when 50 KB can’t be reached you get the smallest workable size with an honest explanation.
Target size
Resize pixels (optional)
Aspect ratio is always preserved. Leave blank to keep the original pixels.
Drop images here
JPG · PNG · WebP — up to 24 files per batch
What 50 KB is good for
50 KB is the classic supporting-image cap: online application portals that accept a signature or photograph below a hard limit, profile pictures where form readers don’t want heavy files, and small web graphics. The compressor searches quality and, when needed, resolution to land under the cap — and tells you exactly which lever it used (quality re-encode, downscaled dimensions, or a format change such as PNG→JPEG).
Transparency matters here too: a transparent PNG never gets silently flattened. You’ll be offered an alpha-preserving WebP or a clearly labelled flatten step instead.
50 KB questions, answered honestly
What usually needs a 50 KB image?
Government and university portals often cap supporting images near 50 KB — signature scans, ID photos and application portraits. JPEG at 50 KB comfortably fits a passport-style photo; a signature scan needs even less.
Can every image actually reach 50 KB?
Mostly yes. Photos up to a few megapixels reach 50 KB with modest quality loss. A 12-megapixel photo will be downscaled as well as re-encoded. Dense screenshots and detailed logos are the hardest — the tool tells you when the best reachable size lands above 50 KB, and hands you that file with the reason.
Will the image stay sharp at 50 KB?
At 50 KB a passport-style photo stays crisp when printed at passport size and looks clean at 100% on screen. Enlarging beyond its pixel dimensions is where any 50 KB file softens — keep the full-resolution original for printing.
Do my images get uploaded anywhere?
No. Compression runs entirely in your browser using canvas encoding. Files never leave your device, and the tool even works with your connection switched off once the page has loaded.
Can I compress a photo to 50 KB without changing its dimensions?
Often yes: the engine tries quality first and only reduces the resolution if the cap still cannot be met. If the portal accepts a smaller image, set the width limiter yourself — the aspect ratio is preserved, so nothing stretches.
Is 50 KB enough for a passport or exam-form photo?
It is a common cap for signature scans and small profile photos. Passport-style photos are often allowed up to a few hundred KB, so a 100–200 KB file may be the better choice if the portal permits it — check the notice for the exact band.
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