Creating a Custom Slack Emoji from SVG
Slack requires a raster PNG or GIF upload for custom emoji, so an SVG design needs rasterizing to the right size first.
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Why SVG Needs Converting First
Slack's custom emoji upload only accepts raster formats like PNG, JPEG, or GIF, not SVG directly, so a vector logo or icon design needs to be rasterized to a PNG at Slack's recommended small square dimensions before it can be uploaded as a usable custom emoji in a workspace.
- Slack's emoji upload only accepts raster formats, not SVG files directly
- A vector design must be rasterized to PNG before uploading as an emoji
- Slack recommends a small square dimension for optimal emoji display
Getting a Clean Small-Size Rasterization
Since emoji display at a very small size, exporting the SVG at Slack's recommended dimensions directly, rather than exporting large and letting Slack downscale it, produces sharper results, and simplifying overly detailed designs before export helps ensure the emoji stays legible at that tiny display size.
- Exporting directly at the recommended small size produces sharper results
- Avoids relying on Slack's own downscaling of an oversized source image
- Simplifying overly detailed designs helps legibility at tiny emoji sizes
Frequently Asked Questions
Can I upload an SVG file directly as a Slack custom emoji?
No, Slack's custom emoji upload requires a raster format like PNG, JPEG, or GIF, so an SVG design must be exported to PNG before uploading.
What size should I export my SVG at for a Slack emoji?
Exporting directly at Slack's recommended small square dimension, generally 128x128 pixels, produces a sharper result than exporting large and relying on Slack's downscaling.
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