Resize an image to 20 KB
Reduce a photo or signature toward a 20 KB file size online for free.
Your workspace File size · Preview · DownloadPrivate by default
Runs on this device. The first use downloads a 56 to 135 MB model once. Nothing is uploaded.
- Open a photoDrop, paste or choose one.
- Set the sizeType it, or pick a common size.
- DownloadSee the file size before you save.
Processed on your deviceNo watermark. No signup.
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.
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
- 22.2 KB to 38.1 KB
- Quality it settles on
- 5
- Photos that hit the target
- 0 of 5
- Photographs used
- 5
- Measured on
The default width cannot always reach this target.
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 1045 px.
Which forms ask for 20 KB?
Each form below states 20 KB as the most it accepts. Where a form also states a minimum, this page does not check it. The form's own page keeps the file inside the whole range.
Up to 20 KB
| Form | Upload | Stated limit | Source |
|---|---|---|---|
| IBPS photo, signature, thumb and declaration size | UploadSignature | Stated limit10 to 20 KB | Sourcewww.ibps.in |
| TNPSC photo and signature size, with name and date | UploadSignature | Stated limit10 to 20 KB | Sourcetnpsc.gov.in |
| Driving licence photo and signature size | UploadPhoto | Stated limit10 to 20 KB | Sourcesarathi.parivahan.gov.in |
| Driving licence photo and signature size | UploadSignature | Stated limit10 to 20 KB | Sourcesarathi.parivahan.gov.in |
| SSC photo and signature size | UploadSignature | Stated limit10 to 20 KB | Sourcessc.gov.in |
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.
Uploading a signature to an exam form that asks for 10 to 20 KB? At 140 x 60 the file can come out too small rather than too big. Resize your signature for an online form.
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.
PNG has no quality setting, so a PNG over the target is reduced to fewer colours instead, keeping as many as fit. The meter shows the count.
Screenshots and graphics usually survive this with no visible change. A photograph needs many colours, so bands of flat colour can appear at a small target, and JPEG is then the better format.
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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