Reduce file size, keep quality
Most email systems impose a 25 MB total cap on attachments, but in practice anything over 5 MB is risky. Some recipient servers reject larger files, mobile clients struggle to download them, and corporate firewalls quarantine big attachments.
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Supports JPG, PNG, SVG, GIF • Max 10MB per file
Most email systems impose a 25 MB total cap on attachments, but in practice anything over 5 MB is risky. Some recipient servers reject larger files, mobile clients struggle to download them, and corporate firewalls quarantine big attachments.
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.
Email size is calculated after Base64 encoding, which inflates files by ~33%. A 20 MB attachment becomes ~26 MB on the wire — pushing past most providers' caps. Aim for 5 MB or less to avoid surprises.
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).