Resize an image to 20 KB
Reduce a photo or signature toward a 20 KB file size online for free. The tool searches JPEG quality and suggests a smaller width when needed. Check that fine lines remain readable before downloading. Your image stays in your browser, with no signup or watermark added.
Your workspace FILE SIZE · PREVIEW · DOWNLOADPrivate by default
Finds the highest quality that fits the target at these dimensions.
Processed on your deviceNo watermark. No signup.
What to expect at this size
These are measured figures, not estimates. Five photographs were run through this page's own engine and the results written down.
The range is what varies between an easy photograph and a hard one: a flower against a blurred background compresses far better than a street full of signage.
- File size produced
- 22.3 KB to 37.7 KB
- Quality it settles on
- 5 to 5
- Photos that hit the target
- 0 of 5
- Photographs used
- 5
- Measured on
This is the one target the default width cannot always reach.
At the full width the quality search runs out of room before the file is small enough, so reduce the width and the target comes within reach.
Every photograph tested fitted once the long edge was reduced to 1024 px.
Why do forms ask for this size?
A 20 KB limit leaves little room for detail. Crop unnecessary margins and use the dimensions requested by your destination before adjusting quality.
Signatures and simple graphics may compress more easily than a detailed photograph, but check the output rather than assuming it will fit.
What is the difference between resizing and compression?
The main difference between resizing and compression is the measurement you change. Resizing changes width and height in pixels. Compression reduces file size in bytes.
A photo can have the correct dimensions and still exceed an upload limit, so check both requirements.
If you need both, set the dimensions first and then adjust quality or the file size target. Work from the original and download once to avoid repeatedly recompressing a saved JPEG.
What happens to your photo?
Your selected photo is processed in your browser, without an image upload to a server. The page may download code and codecs needed for editing.
Save your result before closing the tab; unsaved edits are kept in memory rather than in an online account.
Common questions
Why does my photo look blocky at 20 KB?
Because 20 KB is not many bytes for a photograph. JPEG reaches it by discarding fine detail, which shows as soft edges and visible squares.
Measured on five photographs, none of them fitted 20 KB at the full width even at the lowest quality, so the tool offers a narrower width instead.
Is 20 KB enough for a signature?
A simple signature may fit, especially after cropping empty margins. Keep the required dimensions and check that thin strokes are readable.
A noisy scan or large image may need further adjustment; file size alone does not establish whether a signature will be accepted.
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