Signature Resizer & KB Reducer Online
Crop extra white space, resize your signature and reduce the file size for online forms.
For strict KB limits, JPG or WebP is usually more suitable than PNG.
How to Resize a Signature Online
Signature Resizer & KB Reducer Online
Use this free signature resizer to crop, resize and reduce a signature image for online forms, applications and document uploads. The tool can automatically remove excess white space and prepare a cleaner signature image.
Resize Signature to 20KB, 50KB, 100KB or 200KB
Choose a target file size such as 20 KB, 50 KB, 100 KB or 200 KB. You can also enter a custom target and choose JPG, PNG or WebP output.
How to Make a Signature Image Smaller
- Upload your signature photo or scan.
- Keep auto-crop enabled to remove unnecessary white margins.
- Choose the required width and height.
- Select a target KB size and process the image.
- Download the resized signature.
Privacy
Image processing is performed in your browser. The tool is designed so the selected signature image does not need to be uploaded to a server for processing.
Frequently Asked Questions
Can I resize a signature to 20KB?
Yes. Select the 20 KB preset or enter a custom target size.
Can I crop the extra white space around my signature?
Yes. Auto-crop detects the non-white portion and trims surrounding blank space.
Which format is best for a small signature file?
JPG or WebP is generally more suitable when a strict file-size limit is required.
Does the tool upload my signature?
The processing is performed in the browser, so the image can remain on your device.