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GIF Resize Tool

Resize animated GIFs entirely in the browser while keeping every frame intact. Supports proportional scaling, custom dimensions and adjustable encoding quality.

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Click or drag a GIF file here

Works completely offline in your browser. Supports up to hundreds of frames.

Tool Overview: GIF Resize Tool – Resize Animated GIFs Online

Resize and optimise animated GIF files entirely in your browser. ToolMi decodes every frame locally, keeps transparency intact and re-encodes the animation with the exact size and quality you choose.

What Is GIF Resize Tool – Resize Animated GIFs Online?

GIF Resize Tool – Resize Animated GIFs Online helps you resize images with the desired dimensions for fast preview and export.

How to Use

  1. Upload a file or input content.
  2. Adjust size, quality, format, or effects.
  3. Preview and download the result.

Common Use Cases

  • Optimize assets for web and apps
  • Convert formats for design/dev
  • Quick edits for social or ecommerce

❓ FAQ

Q1: Blurry after compression?
A: Increase quality or reduce compression.

Q2: Need transparency?
A: Use PNG/WebP or supported formats.

Q3: Batch processing?
A: Process in smaller batches for stability.

Why Resize GIFs Online?

  • Reduce GIF file size for faster page loads and better Core Web Vitals.
  • Meet social media limits on Discord, Slack, Twitter/X, Telegram and more.
  • Keep transparent backgrounds for UI demos, stickers and overlays.
  • Prepare marketing assets that fit email, landing page and ad network restrictions.

Key Features of the ToolMi GIF Resizer

  • Two resize modes: percentage scale and exact pixel dimensions with optional aspect-ratio lock.
  • Adjustable encoding quality level to balance colour fidelity and file weight.
  • Preserves animation timing, loop count and per-frame transparency.
  • 100 % client-side processing: no uploads, no watermark, no data collection.

Step-by-Step: How to Resize a GIF Without Losing Transparency

  1. Upload or drag a .gif file into the tool.
  2. Pick a resize mode and define the target size.
  3. Choose the encoding quality (lower numbers keep more colour detail).
  4. Click Start Resize and monitor the progress bar.
  5. Download the optimised GIF as soon as the render reaches 100 %.

Best Practices for High-Quality GIF Output

  • Keep the quality slider between 1–6 for gradients or UI captures that need smooth colours.
  • For looping tutorials, note that many platforms round frame delays shorter than 10 ms up to 20 ms.
  • Test different dimensions for chat apps — popular canvas sizes include 512 px, 320 px and 128 px squares.
  • Pair the GIF resize tool with the Image Compressor to create WebP or JPEG fallbacks.

FAQ

Does the tool keep transparent backgrounds?
Yes. Frames are composited with alpha preserved, so icons and stickers stay transparent.

Is there a file size limit?
Processing happens locally, so you can work with large GIFs. Very big animations may take longer to encode.

Will the animation loop settings change?
No. The resizer keeps the original delay and repeat values unless you modify them externally.