Signature Resize: Reduce Signature Size in KB

Online exam and government forms ask for a scanned signature with a strict size, and each form sets its own: SSC wants 10 to 20 KB at about 6.0 x 2.0 cm, IBPS and SBI 10 to 20 KB at 140 x 60 pixels, RRB NTPC 30 to 49 KB. This signature resize tool crops, whitens and compresses your signature to the KB size you need, as a JPG.

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

Keeps your photo's shapemax 20 KBBackground: white paper

2 Add your signature

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.

Target file size starts at 20 KB, the most common signature limit. Change it to match your form, or pick your exam in the list above to get its exact pixel size and KB range. If your exam is listed below, its own page is the safer choice because it also keeps the file above the minimum.

How to resize a signature in KB

Sign on plain white paper in the ink colour your form asks for, and photograph or scan it in even light.
Target file size is already set to 20 KB. Change it if your form gives a different limit.
Pick the signature image, tap "Make paper white" if the paper looks grey, and crop tightly with Zoom and Move.
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.

Exam and form signature sizes

Each form sets its own pixel size and KB range, and many reject a file that is too small as well as too large. Open the page for your form to get the exact size; the figures below come from each official notice.

Form	Pixels	File size
SSC Exam Signature	600 x 200	10 to 20 KB
UPSC Exam Signature	350 x 350	20 to 300 KB
IBPS PO / Clerk Signature	140 x 60	10 to 20 KB
SBI PO / Clerk Signature	140 x 60	10 to 20 KB
RRB NTPC Signature	140 x 60	30 to 49 KB
GATE Exam Signature	250 x 80	3 to 300 KB
India Post GDS Signature	300 x 120	20 to 100 KB
CTET Exam Signature	350 x 150	3 to 30 KB
UPPSC Exam Signature	600 x 300	under 30 KB
PAN Card Signature	353 x 157	under 50 KB
TNPSC Exam Signature	230 x 75	10 to 20 KB
MPSC Exam Signature	350 x 150	under 50 KB
APPSC Exam Signature	350 x 150	under 30 KB
GPSC (OJAS) Exam Signature	750 x 250	under 15 KB
DSSSB Exam Signature	110 x 140	under 40 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
JKBOPEE Exam Signature	350 x 150	10 to 50 KB
BPSC (Bihar) Signature	200 x 280	under 20 KB
CUET UG Signature	350 x 150	10 to 50 KB
JEE Main Signature	350 x 150	10 to 100 KB
NEET UG Signature	350 x 150	10 to 100 KB

Other KB tools

Common reasons this signature is rejected

A file below the form's minimum, such as under 10 KB for SSC or IBPS, or under 30 KB for RRB NTPC.
Grey or shadowed paper, which makes the signature look faint after compression. Tap "Make paper white".
A wide empty margin around the signature, so it looks tiny in the final image.
Signing in capital letters where the notice asks for running handwriting.
Saving as PNG when the form asks for JPG or JPEG.

Frequently asked questions

How do I resize my signature online?

Sign on white paper, take a clear photo, pick it here, tap "Make paper white", crop tightly with Zoom and Move, set Target file size to your form's limit, and download the JPG.

What is the usual signature size in KB?

There is no single size. Many bank and SSC exams use 10 to 20 KB, PAN card under 50 KB, RRB NTPC 30 to 49 KB. The table on this page lists each form's size from its official notice.

Can I reduce my signature size to 10 to 20 KB?

Yes. Use the page for your exam (SSC, IBPS, SBI and others use 10 to 20 KB), which keeps the file inside the range. This page only sets a maximum.

What format should a signature be in?

Almost all Indian exam forms ask for JPG/JPEG, which is what this tool produces.

Is my signature uploaded to a server?

No. Cropping, whitening and compression all run inside your browser. The signature image never leaves your device and nothing is stored.

How do I resize my Signature Resize online?

Pick your scanned signature in the tool on this page, crop it with Zoom and Move, then download the JPG. It is free and works on any phone or computer.