One image or a batch
Source images
JPEG, PNG, WebP
Static images. Up to 4 MiB per file, 12 MiB total and 4 million pixels per image. At most six source images.
Signature Image Preparation
Fit a signature to an application box, with optional near white transparency.
Open this toolA signature upload needs to fit the form's box without losing thin or faint strokes.
Choose the output dimensions and inspect any near white transparency setting before saving.
Inputs and controls
Box width
Tool inputs
Allowed range: 1 to 2000
Box height
Tool inputs
Allowed range: 1 to 1000
Near white background
Tool inputs
Keep background, Make near white transparent
White cutoff per channel
Tool inputs
Allowed range: 180 to 255
How to use
- Choose a static JPEG, PNG or WebP source. Check the displayed upload limits before processing.
- Set Box width, Box height, Near white background and White cutoff per channel. Review the selected units and options before preparing the output.
- Select Prepare image. Inspect the resulting preview, dimensions and file size, then download the output you need.
Why use this tool
Box fitting keeps the complete signature visible while adjusting it for the application field.
Before relying on the result
Compare the finished picture with its source. Review the threshold and the finished signature carefully before uploading it.
Questions
Can background transparency erase light strokes?
Yes. Review the threshold and the finished signature carefully before uploading it.
What should I check before using Signature Image Preparation?
Prepare a supported source image and check Box width, Box height, Near white background and White cutoff per channel. Use the exact units shown beside the controls and replace any example values with your own inputs.
Source page last modified: 2026-10-04T18:22:35+00:00. This profile describes the tool; use its page to run it.
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