Signature Resizer

Crop, clean and resize your signature to the exact pixel size and KB limit. Your signature never leaves your device.

Select Signature Photo

Tap to choose a photo or drop it here

Signature on white paper · JPG, PNG, WEBP, HEIC

Size & Options

Size (pixels)

Format

Fit

Max file size (KB)

Min file size (KB)

Auto-crop empty paper around the signature

Clean background (make paper white, ink darker)

Clean background strength

Ink colour

Transparent background (PNG only)

Preview & Download

Upload a signature photo to start.

Download Signature

About Signature Resizer

Signature resizer cleaning a signature photo and resizing it to 140 x 60 pixels

The Signature Resizer turns a photo of your signature into a clean image of the exact size your form needs, such as 140 x 60 pixels and under 20 KB. It removes the empty paper around the signature, makes the paper background white, makes the ink darker and fits the result into your chosen size.

Your signature is a sensitive document, so it never leaves your device. The tool works fully in your browser and shows a live preview while you adjust the settings.

Key features

Automatic cropping of empty paper around the signature
Background cleaning with adjustable strength and ink colour (black, dark blue or dark gray)
Preset sizes such as 140 x 60 px and custom sizes up to 3000 px
Maximum and minimum file size in KB
JPG or PNG, with optional transparent background for PNG
Keep proportions or stretch to the exact size

When do you need this?

Online job forms that ask for a scanned signature in a small pixel size
Exam and admission forms with a strict KB limit for the signature image
Digital documents where you want a clean signature without the paper background

Common mistakes to avoid

Signing with a light pen or on lined paper, which makes cleaning harder
Taking the photo in dim light or with shadows across the page
Stretching the signature to fit the size, which changes its shape
Forgetting to check whether the portal wants JPG or PNG

How to use

Sign with a dark pen on plain white paper and take a clear photo (or scan it).
Select the photo. The tool crops the empty paper around the signature automatically.
Choose the size your form needs (for example 140 × 60 px) and, if required, the Max KB (for example 20).
Adjust "Clean background" strength until the signature looks sharp, then download.

اردو میں طریقہ:

سفید کاغذ پر گہرے قلم سے دستخط کریں اور صاف تصویر لیں (یا اسکین کریں)۔
تصویر منتخب کریں۔ ٹول دستخط کے ارد گرد خالی کاغذ خود کاٹ دیتا ہے۔
فارم میں مانگا گیا سائز چنیں (مثلاً 140×60 پکسل) اور اگر ضرورت ہو تو Max KB (مثلاً 20) لکھیں۔
"Clean background" کی مقدار ایڈجسٹ کریں تاکہ دستخط صاف نظر آئے، پھر ڈاؤن لوڈ کریں۔

Tips

Use a black or dark blue pen and a plain white page — avoid lined paper.

Take the photo in good light without shadows; hold the phone straight above the paper.

If the signature looks too thin, increase Clean background strength; if noisy, decrease it.

Choose "Stretch" only if the form requires the exact size and you accept slight distortion.

Frequently Asked Questions

Many forms ask for around 140 × 60 pixels and a file under 20 KB, but it varies. Always check the size and format written in your advertisement or online form.

Yes. Select PNG as the format and turn on "Transparent background". Note that some portals only accept JPG.

No. Your signature stays in your browser and is never uploaded.

Increase "Clean background strength" or use a darker pen and brighter, even lighting when taking the photo.