Quick Answer
Key takeaways
- Skweejee uses VMAF quality targeting instead of guessing compression levels, converging on the smallest file that hits your visual quality target
- Typical savings range from 70-85% for images and videos while maintaining perceptual quality
- Drag-to-wipe before/after preview with quality scores lets you verify output before committing
- All processing happens locally on your machine—no file uploads, works fully offline
- Batch-process hundreds of nested files simultaneously across multiple formats in one run
- Completely free on Microsoft Store with no per-file limits or subscriptions
How VMAF Quality Targeting Works
Skweejee eliminates compression guesswork by measuring perceptual quality.
- Pick a visual quality target (e.g. High = VMAF 94) instead of manually adjusting CRF sliders
- Skweejee converges on the smallest file size that still hits your quality threshold
- VMAF (Video Multimethod Assessment Fusion) measures how images and videos look to human eyes, not just file metrics
- View before/after comparison with drag-to-wipe preview, dimensions, size saved, and quality score
- Verify output quality before keeping any compressed file
- Handbrake and most online compressors require manual tuning; Skweejee automates target-based optimization
Batch Processing Across Multiple Formats
Skweejee handles images, videos, and PDFs in one operation without switching tools.
- Drop a folder containing JPG, PNG, MP4, MOV, WebM, and PDF files into Skweejee
- Recursive file detection automatically finds media in nested subfolders
- Process hundreds or thousands of files simultaneously with one click
- Smart auto-format classifies each file type: photos become WebP, screenshots become PNG, videos encode to H.265 or AV1
- Export as .zip with original folder hierarchy preserved
- Watched folders auto-compress any file you drop in using your preset configuration
- Right-click any file in Windows Explorer and choose Compress for instant processing
Typical Storage Savings Examples
| File Type | Original Size | Compressed Size | Savings |
|---|---|---|---|
| beach-sunset.jpg | 12.4 MB | 1.8 MB | 85% |
| family-trip.mov | 480 MB | 96 MB | 80% |
| portfolio.pdf | 38 MB | 9.2 MB | 76% |
| screenshot.png | 3.1 MB | 410 KB | 87% |
| Batch total | 533 MB | 107 MB | 80% |
Privacy and Local Processing
- All files are read and written directly to your disk—zero bytes uploaded
- Works 100% offline with no internet connection required
- Sensitive shoots, private documents, and unreleased work never leave your machine
- No user data collection, no telemetry, no cloud round-trips
- Diagnostic logs remain local unless you choose to share them
- Built with FFmpeg and ImageSharp, powered by industry-standard compression libraries
Frequently asked questions
How much quality do I lose with compression?
Skweejee uses VMAF targeting so you set the visual quality threshold, typically achieving 70-85% file size reduction with no perceptible quality loss when using High or Photographer presets.
Can I compress video files like I do images?
Yes, Skweejee offers Handbrake-class video control with H.264, H.265, VP9, and AV1 codecs, hardware acceleration via NVENC, Quick Sync, and AMF, plus cropping, denoising, and target file size encoding.
Will my original files be overwritten?
Never. Skweejee writes new compressed copies and leaves your source files completely untouched, allowing you to verify results before discarding originals.
How many files can I process at once?
Skweejee is designed for batch processing with no file limits—drop in folders containing hundreds or thousands of nested images, videos, and PDFs and process them all simultaneously.
What makes this better than free online compressors?
Online tools limit file count, upload your data to servers, and require manual quality guessing. Skweejee processes unlimited files locally with VMAF-based quality targeting and before/after verification.
Does this work on Mac or Linux?
Currently Skweejee is available only on Windows via Microsoft Store, with support for other platforms potentially coming later.
- Best for: photographers, web developers, social creators, and anyone managing large media libraries who need reliable compression without manual tuning
- Skip if: you're on Mac or Linux (Windows-only today), or you only compress a few files per month and don't mind online tools
- Next step: install Skweejee free from Microsoft Store and test the before/after preview on your own files
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