Resize Image to 20 KB: Free Online Compressor

20 KB is one of the tightest limits on online forms, and it mostly applies to scanned signatures. SSC, IBPS, SBI, RBI and several other exams ask for a signature between 10 and 20 KB. This page starts the compressor at 20 KB, so you only need to pick the image and download.

1 Choose what the photo is forTarget file size (KB)

Keeps your photo's shapemax 20 KB

2 Add your photo

Drop a photo here or tap to choose
JPG, PNG or WebP · you can also paste (Ctrl+V)

Your photo stays on your device. Face detection and background removal also run on your device.

A small signature (for example 140 x 60 pixels) fits 20 KB easily at high quality. A full phone photo does not: to reach 20 KB the tool has to lower quality and shrink the pixel size, so crop away empty space first and start from a sharp, well-lit image.

How to compress an image to 20 KB

Target file size is already set to 20 KB. Change it if your form gives a different limit.
Pick the photo or scanned document.
Check that the file size line shows ✅, then tap Download.

If the form also gives a pixel size, use its own page instead so the shape is right too, for example the SSC photo or IBPS signature tools, or browse all exam photo and signature sizes.

Forms on this site with a 20 KB limit

These applications accept files up to 20 KB. Some also set a minimum and a pixel size, so their own page is the safer choice.

Form	Pixels	File size
SSC Exam Signature	600 x 200	10 to 20 KB
IBPS PO / Clerk Signature	140 x 60	10 to 20 KB
SBI PO / Clerk Signature	140 x 60	10 to 20 KB
TNPSC Exam Signature	230 x 75	10 to 20 KB
RBI Grade B Signature	140 x 60	10 to 20 KB
LIC AAO Exam Signature	140 x 60	10 to 20 KB
NABARD Grade A Signature	140 x 60	10 to 20 KB
ESIC Exam Signature	140 x 60	10 to 20 KB
BPSC (Bihar) Signature	200 x 280	under 20 KB

Other KB tools

Common mistakes

Using this page for a form that also has a minimum, such as 10 to 20 KB. The tool only caps the size, so use the form's own page to stay inside the range.
Leaving a large white margin around a signature, which wastes the 20 KB on empty paper.
Squeezing a face photo to 20 KB when the form actually allows 50 KB. Check the limit first.

Frequently asked questions

How do I reduce a photo to 20 KB?

Pick the photo on this page; Target file size is already 20 KB. Crop tightly, check that the file size line shows ✅, then download the JPG.

How do I resize a signature from 10 to 20 KB?

For a form with a 10 to 20 KB range, open that form's page (for example SSC or IBPS signature), which keeps the file inside both limits. If you only need it under 20 KB, this page is enough.

Why is my 20 KB photo blurry?

20 KB holds little detail for a full-size photo. Crop closer, use even light, and if the form gives a pixel size, use its own page so the image is not larger than needed.

Is my photo uploaded to a server?

No. Resizing, compression, face detection and background removal all run inside your browser. The photo never leaves your device and nothing is stored.

How do I resize a photo for the Resize Image to 20 KB online?

Pick your photo in the tool on this page, adjust zoom so the face is centred, then download the JPG. It is free and works on any phone or computer.