Compress an image to 20 KB

SSC, UPSC and railway exam portals in India routinely cap uploads at 20 KB.

Drop images here or tap to choose — JPG, PNG, WebP, several at once

No file selected yet

Nothing leaves your deviceNo server sees your documents. Turn off your wi-fi and it still works.

Hits the number, not near itWorks backwards from 20 KB instead of making you guess with a slider.

No watermark, no accountYou get a clean file, with the original filename.

Who asks for 20 KB

Twenty kilobytes is exam-portal territory: SSC, UPSC, railway recruitment and a great many state examination boards. Signature uploads in particular are often capped here, sometimes lower.

Expect the resolution to drop

At this size, JPEG quality alone cannot get a phone photo under the limit — the tool will reduce the pixel dimensions, repeatedly if necessary. That is not a flaw; it is the only way to hit 20 KB. For a signature on white paper the result stays perfectly legible, which is what these forms are checking.

How the target is hit

Most compressors give you a quality slider and leave you to guess. This works backwards from the number instead: it encodes the image several times, narrowing in on the highest JPEG quality that still lands under the limit. If even the lowest usable quality overshoots, it reduces the pixel dimensions by 20% and runs the search again, repeating until the file fits.

Everything happens in memory in your browser. Nothing is uploaded, there is no queue, and there is no daily limit. If you need a different number, the main compressor lets you type any target you like.

Common questions

How do I compress a photo to 20 KB?

Drop it above and press the button. The tool finds the best quality that still fits under 20 KB and reduces the resolution only if it has to.

Are my images uploaded?

No. Compression runs inside your browser. You can disconnect from the internet after the page loads and it still works.

Why did my file come out well below 20 KB?

The tool stops at the highest quality that fits. Simple images — scans, screenshots, documents — reach the target with room to spare, which is the best available result.

Will the photo still look acceptable?

For documents, ID photos and screenshots, yes. For a large detailed photograph, 20 KB requires a visible reduction in resolution — but the file will be accepted by the form, which is the point.

Can I do several at once?

Yes. Every image is processed against the same limit and gets its own download button.