Free tool

Signature resizer

Exam and bank forms usually want the signature as a JPG of 10 to 20 KB, often exactly 140 × 60 pixels. Photograph your signature or drop a scan: Arche crops it to that shape and brings it to 10–20 KB, ready to download. Nothing is uploaded.

Free, no sign-up
Runs in your browser, nothing uploaded
Many images at once

Signature resizer

On this device

Drop images hereWebP, PNG, JPG, GIF, BMP or AVIFChoose imagesProcessed on your device. Nothing is uploaded.

Form preset

Maximum size (KB)

Each file comes out between 10 KB and 20 KB. Files that would be smaller are padded up; the picture stays the same.

Form requirements: minimum, pixels, DPI

Minimum size (KB, optional)

Width (px)

Height (px)

Fill in both for an exact pixel size, as many exam and ID forms ask.

DPI (optional)

Black and white

For forms that ask for a black-and-white signature.

Output format

Your browser decodes and re-saves each image. Nothing is sent to Arche's servers, and re-saving drops EXIF metadata such as GPS location.

Guide

Good to know

Getting a clean signature

Sign with a black pen on plain white paper and photograph it in daylight, from straight above, with the signature filling most of the frame. Crop to fill keeps the middle of the photo, so keep the signature centred. Turn on Black and white if the form asks for it, as PAN applications do. Forms reject signatures written in capital letters.

Other signature sizes

Pick SSC, PAN or another form under Form preset, or type the figures from your notification under Form requirements: maximum and minimum KB, width and height in pixels, and DPI. Arche writes the DPI into the file for portals that check it.

Photo and signature sizes for common forms

Pick one of these under Form preset and Arche sets the size range, pixels and DPI for you. The figures come from each body's published upload instructions, checked in November 2026. They can change between notifications, so check yours before you upload.

Photo and signature sizes for common forms
Document	Pixels	File size	DPI
IBPS / SBI photo	200 × 230	20–50 KB	—
IBPS / SBI signature	140 × 60	10–20 KB	—
IBPS / SBI left thumb impression	240 × 240	20–50 KB	200
IBPS / SBI handwritten declaration	800 × 400	50–100 KB	200
SSC signature	Any	10–20 KB	—
NEET UG / JEE Main photo	Any	10–200 KB	—
PAN photo, Protean (NSDL)	197 × 276 (3.5 × 2.5 cm)	up to 50 KB	200
PAN signature, Protean (NSDL)	354 × 157 (2 × 4.5 cm)	up to 50 KB	200
PAN photo, UTIITSL	213 × 213	up to 30 KB	300
US visa photo (DS-160)	600 × 600	up to 240 KB	—

Photo and signature sizes for all exams

FAQ

Frequently asked questions

Something else? Write to support@niamori.ai.

What size should a signature be for IBPS, SBI and SSC?

IBPS and SBI notifications ask for 140 × 60 pixels and 10 to 20 KB in JPG, and SSC for 10 to 20 KB. Those are the presets here, but each notification can change them, so compare with yours before uploading.

My signature file is only 5 KB. Will the form accept it?

Not if it asks for 10 to 20 KB. Arche raises the quality first and, if that is not enough, adds a padding block so the file is just over 10 KB. The signature looks exactly the same.

Can I do this on my phone?

Yes. Open this page on your phone, choose the photo of your signature from the gallery or take one, and download the result. The resizing runs in your phone's browser.

Are my images uploaded?

No. The conversion runs inside your browser, so your images stay on your device. Files are only uploaded if you choose to optimize them with Arche, and those are deleted within 48 hours.

What is Arche?

Arche makes JPEG, PNG and WebP images smaller without changing their format or pixel size, and strips metadata such as EXIF location. It is free without an account; Pro raises the batch limits.

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Need smaller files, not just a new format?

Arche recompresses JPEG, PNG and WebP in the same format and size. Free without an account; files are deleted within 48 hours.

Optimize images See pricing