| What it does | Secure large file transfer directly between devices with end-to-end encryption
| Free online tool to compress images to exact KB size
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| Stage | Not given
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| Founded | Not given
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| Based in | DE
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Direct device-to-device file transfer
- End-to-end encryption by default
- No cloud storage or accounts required
- Support for files up to multi-terabyte
- Resumable transfers
- Offline-first with local file storage
- Shared spaces for teams
- Invite-only access with approval
- Folder sync and mirroring
- Network relay support
| - Supports JPG, JPEG, PNG, and WebP formats up to 10MB
- Binary-search algorithm hits target within ±5 KB
- Preset compression sizes: 20KB, 50KB, 100KB, 200KB
- All processing happens locally in browser with no server upload
- Automatic dimension scaling for very small targets
- Lightweight compression logic optimized for low-RAM devices
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| What makes it different | - No per-GB fees or size limits on transfers
- Files remain on original devices, never uploaded to servers
- Works across most networks without manual configuration
- No accounts, no telemetry, no cloud lock-in
- Open source with transparent code
| - Browser-based processing with complete privacy - images never leave your device
- Exact KB targeting with binary search instead of quality slider guessing
- Completely free with no daily limits, signup, or watermarks
- Built specifically for exam forms, job portals, and visa applications with exact KB requirements
- Optimized for low-end devices with limited RAM and older browsers
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 2 ● no change since last check | 2 ● no change since last check |
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| Trust Flow (Majestic) | 3 | 6 |
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| Citation Flow (Majestic) | 19 | 19 |
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| Referring domains (Majestic) | 9 | 9 |
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Mirall
KB Reducer