Discord / Slack Emoji Optimizer
Resize and auto-compress images to fit emoji upload limits — Discord (≤256 KB), Discord Nitro animated (≤512 KB), Slack (≤128 KB), or Telegram (≤512 KB). Picks output dimensions and binary-searches quality to land just under the limit.
Drag an image here or
Resizes + compresses for Discord (≤256 KB, max 128×128) or Slack (≤128 KB, max 128×128). Auto-balances size and quality.
How to use Discord / Slack Emoji Optimizer
- Drop an image.
- Pick platform, target dimensions, and format.
- Click Download Optimized.
What is Discord / Slack Emoji Optimizer?
Custom emoji upload limits are notoriously strict and platforms reject your file with no helpful guidance. This tool center-crops to square and tries WebP / JPEG quality steps to fit your chosen platform's hard limit, then tells you the final file size.
FAQ
- Why doesn't it support GIF?
- Animated GIF re-encoding requires significant client-side compute. For animated emoji, upload the original .gif (Discord auto-rejects above 256 KB).
- What image formats are supported?
- Common formats like JPEG and PNG are supported, and all optimization is done client-side in your browser.
- How does it choose the compression level?
- It automatically selects compression to meet platform size limits; you can preview the result, all processed locally.
Related tools
People also use
- Instagram Carousel Slicer📱 Mobile App Assets
Instagram Carousel Slicer — Slice one wide image into 2 to 10 Instagram carousel slides — square, 4:5 portrait (recommended), or 9:16 story. Pick slice ...
- Batch Image Processor🖼️ Image Tools
Process multiple images at once — resize, compress, convert format or add a watermark to all. Download as a ZIP. Free, all in your browser.
- Mobile Wallpaper Generator📱 Mobile App Assets
Mobile Wallpaper Generator — Drop one image and get it auto-resized to every common phone, tablet, and desktop wallpaper resolution — iPhone 15 Pro Max,...