Batch Compress Image
Batch Compress Image is a lightweight Windows desktop app by 3thousand30 that compresses batches of images locally with adjustable quality, output format conversion, metadata control, preview-based size checks, and a live preview.
Point it at a folder. Tune the settings. Preview the result. Click Compress.
How it works
- Select your input folder - pick a folder of JPG, PNG, WebP, or TIFF images
- Choose your compression settings - output format, quality, and whether to strip EXIF metadata
- Preview a sample - compare original and compressed output and review the preview size estimate
- Compress the folder - results are written to a
compressedsubfolder inside your input folder by default, with final size feedback shown when the run completes
Image processing happens locally on your machine. Your images are not uploaded to a server.
Key features
- Batch compression - process an entire folder in one run
- Live preview panel - inspect one sample image before you commit the full batch
- Preview size estimate - see a quick original-versus-compressed size comparison before you run the folder
- Format conversion - keep original format or export everything as JPG, PNG, or WebP
- Quality slider - fine-tune JPEG and WebP compression from 1 to 100
- Metadata control - optionally strip EXIF metadata from exported files
- Custom output naming - choose an output subfolder and optional filename suffix
- Skip existing files - useful when re-running large folders
- Activity Logs - review per-file progress, skipped files, errors, and final batch summary
- Local processing - compression happens on your device
Documentation
- Getting Started - run your first compression batch
- Compression Quality - how the quality slider affects output and file size
- Output Formats - JPG vs PNG vs WebP vs Same as Input
- Troubleshooting - common issues and fixes
Support
Found a bug or have a question? Use the app’s Feedback & support menu, email hello@3thousand30.com, or open an issue on GitHub.