GIF Resizer
Change GIF or image dimensions while preserving quality
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Settings
Turn off Maintain Aspect Ratio to enable smart cropping.
Drag & drop or click to upload
GIF, PNG, JPG, WebP
Max 50 MB
Job Status
Ready
Configure settings and click process
Quick Answer: Resize
To resize a GIF online, use Gifur's resizer at gifur.com/tools/resize. Enter your target width (the height adjusts automatically to maintain aspect ratio). Reducing dimensions significantly decreases file size.
High-quality Lanczos scaling — Resize GIFs anywhere from 50 to 2000 pixels wide. Downscaling usually reduces file size, with the exact change depending on the animation.
Gifur GIF Resizer is a dimension adjustment tool that scales animated GIFs from 50px to 2000px width using high-quality Lanczos algorithm while preserving aspect ratio.
✦ Reducing GIF dimensions lowers the number of pixels encoded per frame and will often reduce the output file size.
Why Use This Tool
Benefits
- Significant file size reduction
- Optimize for specific display sizes
- Maintain aspect ratio automatically
- High-quality scaling algorithm
Specifications
- 1Width adjustable from 50px to 2000px
- 2Automatic aspect ratio calculation
- 3Lanczos scaling for superior quality
- 450MB encoded-file ceiling with pixel, frame, and decoded-memory preflight checks
Technical details
- Lanczos (lanczos3) scaling algorithm
- Preserves animation timing and frame count
- Processes all frames uniformly
- Optional aspect ratio override
Gifur uses FFmpeg.wasm, a WebAssembly port of the industry-standard FFmpeg multimedia framework.
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Guides & Comparisons
Step-by-step walkthroughs and format comparisons