GIF Resizer
Privacy-first GIF Toolkit

GIF Resizer — resize GIF online, free and private, in your browser.

Drop in an animated GIF, set a new width and height (or a percentage), and download it with every frame, the timing and the loop intact. No upload, no watermark, no sign-up: the resizing runs on your device.

Resize a GIF Explore the FAQs

Workbench · runs in your browser

Resize GIF

Instantly resize GIFs for Discord, WhatsApp, Reddit, and more—private, watermark-free, and fully in your browser.

Resize options

Platform presets

Fits inside · keeps proportions

One-click sizing for popular social platforms.

Discord stickers (exactly 320 × 320) and profile banners (680 × 240) are output at that exact size — other shapes are cropped or padded to fit.

Preview

Compare the original GIF with the resized output before downloading.

Original

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Size: —

Resized Output

No preview available yet.

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Size: —

Download

Save the resized GIF or start over with a new file.

Waiting for upload

Guide

How to resize a GIF online

What the GIF resizer above does at each step, and the settings that matter when you need a specific size.

1. Pick a size

Drop a GIF into the tool. Its original dimensions fill the width and height boxes. Type a new width and the height follows automatically while “Lock aspect ratio” is on, or drag the percentage slider to scale both sides at once: 50% gives you a GIF half as wide and half as tall. For a platform, tap a preset instead; the Discord emoji preset, for example, sets 128 × 128.

2. Keep the animation intact

Every frame is resized, not just the first one, and the original frame delays are kept, so the result plays at the same speed and keeps looping. Scaling uses the Lanczos filter, which keeps edges and small text crisp when you shrink a GIF a lot. After scaling, a new 256-color palette is built from your GIF's actual colors, which avoids the banding you get when the old palette is reused. Transparent areas stay transparent.

3. Change the shape without distortion

If the new width and height have a different ratio than the original (a 16:9 clip into a square emoji, say), the tool asks how to handle the difference:

  • Crop to fill: scales until the box is covered, then trims the overflow from the center. Best for emoji and stickers.
  • Pad to fit: keeps the whole picture and adds transparent borders. Best when nothing may be cut off.
  • Stretch: forces the exact box and distorts the image. Rarely what you want.

4. Check the file size

Fewer pixels means a smaller file: dropping a 1000 × 562 GIF to 500 × 281 leaves a quarter of the pixels per frame. Compression ratios vary with colors and motion, so watch the size shown next to the preview. If a platform limit is still out of reach, these help:

  • Discord caps custom emoji at 256KB and stickers at 512KB. The GIF resizer for Discord page lists every current Discord limit with sources.
  • To hit an exact byte budget, use compress GIF, which trades colors and frame rate for size.
  • For long clips, convert GIF to MP4. A looping MP4 is usually a fraction of the GIF's size and plays almost everywhere a GIF does.
01 / 03

Local & Private

Your GIF never leaves the browser. All processing runs with WebAssembly for true zero-upload privacy.

02 / 03

Platform Presets

Optimize in one click for Discord, WhatsApp, Reddit, Slack, and more with curated width and file-size targets.

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Quality Preserved

Lanczos scaling plus per-GIF color palette optimization keeps animations sharp and colors punchy after resizing.

Index

Complete GIF Resizer & Optimizer Toolkit

Resize, compress, and convert animated GIFs online with professional-grade tools. Optimize GIF for web, Discord, WhatsApp, and more - all in your browser.

Browse all tools →
  1. 01

    Resize GIF

    Set exact width/height or percentage scaling with live previews.

  2. 02

    Compress GIF

    Shrink file size while preserving color fidelity via palette optimization.

  3. 03

    Convert GIF

    Switch between GIF, MP4, and WebP outputs with instant conversion.

  4. 04

    GIF Resizer for Discord

    Hit Discord's 20MB upload, 256KB emoji, and 512KB sticker limits with one-click presets.

  5. 05

    GIF to MP4

    Turn a long or heavy GIF into a much smaller looping MP4 video.

  6. 06

    Optimization Guide

    Research-based techniques from 975 test files and 658 hours of testing.

  7. 07

    How to Resize GIF

    Complete tutorial with 3 methods, best practices, and expert tips.

100%
Browser-based
0 MB
Server uploads
Free
Forever

Optimize for Your Platform

Limits checked Oct 2026

01

20 MB upload

Discord GIFs

128² emoji · 320² sticker

02

16 MB

WhatsApp GIFs

sent as looping video

03

≤ 1 MB

Email GIFs

loads before the reader scrolls

04

any size

Social Media

exact pixels, no watermark

How to Resize & Optimize GIFs in 3 Easy Steps

  1. 1

    Upload Your GIF

    Drag and drop or select your GIF file. It stays in your browser - never uploaded to a server.

  2. 2

    Adjust Settings

    Choose your target dimensions, file size, or use our platform presets for instant optimization.

  3. 3

    Download Result

    Preview your optimized GIF and download instantly. No watermarks, no sign-up required.

Questions

GIF Resizer FAQ

More questions? Read the full FAQ or the Discord GIF guide.

01How do I resize a GIF online?
Upload your GIF to the resizer, enter a target width and height (or pick a percentage / platform preset), then click Resize and download the result. Everything runs in your browser with ffmpeg.wasm, so there is no upload, no queue, and no watermark. Most GIFs finish in a few seconds.
02Is this GIF resizer really free?
Yes. All tools on gifresizer.org — resize, compress, convert, crop — are completely free with no sign-up, no watermarks, and no file limits beyond your browser's memory. Processing happens on your own device, so we have no server costs to pass on.
03How do I resize a GIF without losing quality?
Use a resizer that regenerates the color palette after scaling. Our tool uses a two-stage pipeline: Lanczos scaling for sharp edges, then palettegen + paletteuse to rebuild an optimized 256-color palette with dithering. This preserves far more detail than naive scaling, and animation timing and loops are kept intact.
04Can I compress a GIF to a specific file size?
Yes. The Compress GIF tool lets you set a target file size (for example 512KB for a Discord sticker or 16MB for WhatsApp) and automatically adjusts colors, frame rate, and dimensions to hit it while preserving as much quality as possible.
05How do I resize a GIF for Discord?
Discord limits regular uploads to 20MB on free accounts (raised from 10MB in August 2026), custom emoji to 256KB at 128x128 pixels, and stickers to 512KB at exactly 320x320 pixels. Our Discord preset applies the right dimensions and compression automatically — see the GIF Resizer for Discord page for a full guide.
06Will my GIF keep its animation after resizing?
Yes. The resizer processes every frame and preserves frame timing, loop settings, and transparency. Your resized GIF plays exactly like the original, just at the new dimensions and a smaller file size.
07Does resizing a GIF make the file smaller?
Usually, yes. A GIF stores every pixel of every frame, so halving the width and height leaves about a quarter of the pixels to encode. The saving is rarely exactly 75%, because GIF compression depends on colors and motion, but shrinking the dimensions is the single most effective way to cut size. If the result is still too big, run it through the GIF compressor or convert it to MP4.
08How do I resize a GIF without stretching it?
Keep "Lock aspect ratio" on and change only the width (or only the height); the other side follows. When you need a different shape, such as a square from a wide clip, choose Crop to fill (trims the edges) or Pad to fit (adds transparent borders) instead of Stretch.
09How big a GIF can I resize?
The resizer accepts GIFs up to 50MB. Because the work happens in your browser's memory, files under about 30MB process most reliably; on a phone, or with very long animations, close other tabs first.
10Are my files uploaded to a server?
No. This is a privacy-first tool: all GIF processing happens locally in your browser via WebAssembly. Your files are never uploaded, stored, or analyzed, and closing the tab clears everything from memory.

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