Resize a Logo for Your Email Signature
Fit your logo inside a 300×100 box so it looks neat in email signatures without making messages heavy.
Your files are processed in your browser and are not uploaded.
How to use Email Signature Logo Size
- Add your logo.
- Keep 300×100 and PNG, or change them.
- Process, download and add it to your signature settings.
About Email Signature Logo Size
The logo is scaled to fit within 300×100 pixels while keeping its proportions, and saved as PNG to keep transparency and sharp edges. Small, light signature images display more reliably across email apps.
- Files stay on your device – nothing is uploaded
- Free, with no sign-up and no watermark
- Works on several images at once where the tool allows it
Frequently asked questions
What size should a signature logo be?
Usually no wider than 300 pixels and no taller than about 100 pixels.
Why PNG?
PNG keeps transparent backgrounds and crisp edges for logos.
Will my logo be stretched?
No. It is scaled to fit inside the box with its original proportions.
Need different settings?
This page is a preset. You can change every option above, or open the full tool: Resize Image →