| What it does | Free online tool to compress images to exact KB size
| Batch rename files from a CSV or Excel mapping table without uploading them
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Free: rename up to 50 files per batch with all features. Lifetime licence: $19 USD one-time payment for unlimited files per batch.
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| Key features | - 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
| - Case-insensitive filename matching across CSV/XLSX files
- Preview all conflicts before renaming
- Download renamed files as ZIP
- Rename photos by EXIF date taken
- Support for CSV, TSV and Excel .xlsx formats
- In-place folder renaming for Chrome and Edge
- Generate rename scripts for Windows, Mac and Linux
- Handle files in subfolders without moving them
- Auto-numbering for duplicate filenames
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| What makes it different | - 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
| - 100% client-side processing—files never leave your browser or device
- No account, signup or installation required
- Works offline after the page loads
- Free tier with full features for up to 50 files per batch
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 5 ▲ +3 (up) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 6 | 0 |
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| Citation Flow (Majestic) | 19 | 0 |
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| Referring domains (Majestic) | 9 | 0 |
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KB Reducer
Mass Rename