GIF Resizer

Choosing GIF dimensions

Dimensions affect both how the GIF looks and how large the file is — halving the width cuts file size by roughly three-quarters. Keep the aspect ratio locked unless you have a specific reason to stretch the image.

Resize to an exact square size

When a platform demands exact square dimensions, these versions of the tool set the size for you and let you choose how a non-square source is handled — cropped to fill, fitted inside, or stretched.

• 128×128
• 512×512
• 256×256
• 64×64

Frequently asked questions

Will resizing reduce file size too?

Yes — smaller dimensions mean fewer pixels per frame, so file size drops roughly in proportion to the area reduced.

Should I lock the aspect ratio?

In almost all cases, yes. Unlocking it lets you set an exact width and height independently, but stretches the image if the ratio doesn’t match the original.

What width should I resize to?

For chat and social use, 400–480px is a common target that balances clarity and file size. Go smaller if the platform has a strict size limit.