animtool.com
100% Local • No Uploads

GIF Resizer & Video Resizer

Resize animated GIFs, MP4/WebM videos, WebP, APNG, and AVIF by pixel dimensions or percentage to reduce GIF file size for Discord, Slack, and web.

Drop a GIF, MP4/WebM video, WebP, APNG, AVIF, or image to resize
Resize GIF • Resize Video (MP4, WebM, MOV) • Shrink GIF Size for Discord — processed locally
or press Ctrl+V to paste from clipboard

Resize GIF & Video by Pixels or %

Set exact target width and height in pixels, or use one-click percentage presets (25%, 50%, 75%, 150%, 200%) with aspect-ratio lock.

Reduce GIF File Size for Discord

Shrink large GIFs and MP4 videos down to Discord, Slack, Twitch, or forum size limits while keeping animations sharp with Lanczos smoothing.

Pixel Art Upscaler & Video Stretcher

Upscale retro sprites cleanly with Nearest-Neighbor (Point) filtering, or stretch/center-crop videos and GIFs to any custom aspect ratio.

Online GIF Resizer, Video Resizer & GIF Size Reducer

Hitting a "File too large" error on Discord, Slack, or GitHub? Downscaling dimensions with our online GIF resizer and video resizer is the fastest way to reduce GIF file size and compress heavy animations. Scaling a 1080p clip down to 480px or 360px wide typically cuts file weight by 70%+ while still looking crisp on mobile and desktop chat apps.

Need a GIF upscaler for pixel art or a video stretcher? Switch the resampling mode to Nearest Neighbor (Pixel Art) to upscale 32×32 or 64×64 sprites by 200%–400% with razor-sharp blocky edges, or unlock aspect ratio to stretch videos and GIFs freely.

How to Resize a GIF or Video Online

  1. Drop your GIF or video: Load any animated GIF, MP4, WebM, MOV, WebP, APNG, AVIF, PNG, or JPG file into the resizer.
  2. Choose new dimensions: Type a width or height in pixels, or click a percentage preset (25%, 50%, 75%, 150%, 200%).
  3. Select scaling & filter mode: Keep proportions locked, or pick Center-crop / Stretch, and choose Smooth (Lanczos) or Pixel-Art (Nearest Neighbor) resampling.
  4. Resize & save: Click Resize to scale every frame locally in your browser and download your smaller GIF or MP4 right away.