Reduce file size, keep quality
Slack accepts files up to 1 GB but inline image previews render best when files are under 1 MB — they load instantly and don't slow down conversation flow.
Drag & drop your images or click to browse
Supports JPG, PNG, SVG, GIF • Max 10MB per file
Slack accepts files up to 1 GB but inline image previews render best when files are under 1 MB — they load instantly and don't slow down conversation flow.
JPG, PNG, or WebP. Multiple files at once supported.
Target file size is already set. You can adjust if your specific use case has a different cap.
Single files download immediately; batches come as a ZIP.
No. Compression runs entirely in your browser. Your files never leave your device.
JPG for photos (smallest files for natural images). PNG for screenshots, logos, or graphics with transparency. WebP if the destination accepts it (smallest files overall).