Signature Resizer
Trim, resize and reduce a signature image for online forms.
Drag and drop an image here
or paste from clipboard
Supported: JPG, JPEG, PNG, WEBP · Up to 25 MB
Tip: sign in dark ink on plain white paper and photograph it in good light.
Stays on your deviceInstant processingNo account
How to use Signature Resizer
- 1
Upload a photo or scan of your signature.
- 2
Blank space is trimmed automatically, keeping dots and long strokes. Drag the crop box to adjust it.
- 3
Optionally enhance faint ink, change the ink colour, remove speckles and choose a white, transparent or custom background, compare Original and Cleaned side by side.
- 4
Set the exact width and height and a maximum file size, then check the result summary and download.
Privacy
Your image is processed entirely inside your browser using built-in canvas features. It is not uploaded to our server, and it is gone when you close or refresh the page.
Supported formats
JPG, JPEG, PNG and WebP images. HEIC files from some phones aren't supported by most browsers, so convert them to JPG first.
Frequently asked questions
What size does my form need?
Requirements differ between forms. Check the exact dimensions and KB limit stated by the organisation you're applying to, then enter them here.
Will it make my signature look different?
Enhance only darkens faint ink and whitens the paper; it never thickens strokes or adds lines. Leave it Off to keep the original look.
What if the size limit is too small?
You'll see "limit not reached" with the smallest practical size. We don't blur the signature just to pass a number.
How do I get a clean signature?
Sign in dark ink on plain white paper, photograph it straight on in good light, and keep shadows off the page.
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Exact pixels and a KB limit for online forms, checked for you.
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Hit a target file size like 20 KB, 50 KB or 100 KB.
Image Resizer
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Image Compressor
Shrink JPG, PNG and WebP files with one click.