Exact Slack image sizes: workspace icon 132×132, profile 512×512, emoji 128×128, shared image 2000×2000. Resize in your browser, no upload required. Free.
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All recommended Slack image dimensions for 2026. Upload at these exact sizes to avoid any quality loss from platform-side scaling.
| Type | Width × Height | Aspect Ratio | Notes |
|---|---|---|---|
| Workspace Icon | 132 × 132 px | 1:1 | Square, displayed in sidebar |
| Profile Photo | 512 × 512 px | 1:1 | Recommended resolution |
| Shared Image | 2000 × 2000 px | 1:1 | Max dimensions for uploads |
| Custom Emoji | 128 × 128 px | 1:1 | Square, max 128 KB |
Open ResizePack, drop your image and choose the Slack preset - Workspace Icon, Profile Photo, Shared Image or Custom Emoji.
For workspace icons, center your logo within the safe area since Slack rounds the corners. For emojis, ensure the design is legible at very small display sizes.
Download and upload directly to Slack via workspace settings or your profile. Slack accepts JPG, PNG, and GIF formats for most image types.
Ready to resize?
Use Batch Resize for batch resizing with social media presets, or Crop & Ratio to crop to the exact aspect ratio first.
The recommended Slack workspace icon size is 132×132 px. Slack displays it with rounded corners in the sidebar. Upload a square image at 132×132 or larger for the crispest result across desktop and mobile apps.
Upload your Slack profile photo at 512×512 px for the best quality. Slack displays profile pictures at various sizes throughout the interface, from tiny avatars in threads to larger previews in profiles. A 512 px source ensures sharpness everywhere.
Slack custom emojis should be 128×128 px or smaller, with a maximum file size of 128 KB. Square images work best. Slack supports JPG, PNG, and GIF formats for custom emojis. Non-square images will be stretched to fit.
Slack supports shared images up to 2000×2000 px. Files can be up to 1 GB on paid plans (free plan limit is lower). For the best inline preview quality, keep images under 2000 px on the longest side. Slack generates thumbnails automatically.
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Need dimensions for every platform in one place? Read our complete 2026 cheat sheet- every network, every format, updated for this year.
Social Media Image Sizes 2026