nouploadsSignature resizer online: clean and resize a signature in KB
Crop the paper around a signature, darken the ink and whiten grey paper with the signature cleanup controls. Set optional pixel dimensions and a maximum KB, then inspect every stroke before saving the JPEG.
1.Choose & crop
JPG, PNG or WebPYour image will appear here
Choose a file to start croppingDrag the crop edges to frame your image. Scroll or pinch to zoom.
Keyboard crop controls
Arrow buttons move the image in 10-pixel steps.
2.Resize & download
1 KB = 1,024 bytes. JPEG quality is adjusted automatically.
Choose an image to begin.
How to use this tool
- Choose a clear JPG, PNG or WebP of your signature.
- Crop the paper, adjust ink and paper levels, and choose optional pixels and maximum KB.
- Create the JPEG and check that every stroke remains readable before downloading.
Frequently asked questions
Is it private, and can I use it offline?
Your file is processed in this browser without uploads or storage. After the offline installation finishes, these tools work without a connection. Wait for the ready-offline message at the bottom of the page before disconnecting.
Which file types can I open?
Open JPG/JPEG, PNG or WebP images. Animated images and other formats are not supported. The original file stays unchanged on your device.
Why is the download a JPEG?
JPEG offers broad compatibility and adjustable quality for KB limits. Transparency is placed on white. JPEG is lossy, so inspect details and signature strokes; this tool does not export transparent PNGs.
How does the KB target work?
1 KB is 1,024 bytes. Automatic quality search finds a JPEG strictly below your maximum, not an exact byte count. Simple images can be much smaller. If the limit cannot be met, choose a higher maximum.
Is there an image size limit?
Inputs may be up to 25 MB and no more than 40 megapixels. Output is capped at a 4096 px long side. Very large files may need more memory than your device has. If you enter width and height, each can be from 1 to 4096 px.