Free Secure Cloud Tool

GIF Resizer: Resize Animated GIF Width & Height Online

Scale animated GIF dimensions up or down while preserving smooth frame animation, transparency, and looping.

Quick Answer:Upload your animated GIF, enter target width or height (e.g. 300px), and download your perfectly scaled animation.
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Privacy & Security Guarantee

Your file is sent securely to our server for conversion and deleted automatically after 30 minutes.

How to Use the GIF Resizer: Resize Animated GIF Dimensions Online

  1. 1Upload your animated GIF.
  2. 2Specify target width or percentage scale.
  3. 3Download your resized GIF file.

Formula & How It Works

FFmpeg Lanczos Frame Scaling

ffmpeg -i input.gif -filter_complex 'scale=W:-1:flags=lanczos,palettegen' ... output.gif

Applies high-quality Lanczos scaling across all animation frames with palette optimization.

Worked Examples

Resizing GIF for Discord Sticker

Input: animation.gif (800x800 px, 5 MB)

Explanation: Downscales to meet Discord 512 KB upload limit.

Result: animation-small.gif (320x320 px, 480 KB)

Frequently Asked Questions

Does resizing a GIF break its animation?▼

No. Our tool processes every frame in the animation sequence, ensuring smooth looping is preserved.

Quick Reference & Conversion Table

Scale RatioEstimated File Size Reduction
75% of original~40% size reduction
50% of original~70% size reduction
25% of original~90% size reduction

⚠️ Common Pitfalls to Avoid

  • •Distorting aspect ratio by specifying both mismatched width and height without maintaining ratio.

💡 Practical Real-World Uses

  • •Shrinking heavy animated GIFs for email marketing newsletters and forum avatars.
Last reviewed & updated: 2026-11-07
Free & Open Access
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