Compress Multiple Images at Once — Free Batch Tool
Free bulk image compression for efficient workflow
For batch compression, pick one preset for all files and always check the largest output — a single setting rarely fits every image. If the batch mixes photos and screenshots, split it by format so JPEG handles photos and PNG handles UI shots.
Drag and drop your images here
or click to browse files
Compression Settings
or click to browse files
How to Batch Compress Images
Upload Images
Drag and drop your images or click to browse. Supports all common image formats.
Adjust Settings
Choose your desired quality level and output format. Preview changes in real-time.
Download Results
Download compressed images individually or as a batch. Your images are processed locally for privacy.
Batch Compression Tips
Optimize for your use case
Different scenarios require different compression strategies. Our presets are tailored specifically for bulk.
Use the right format
Modern formats like WebP and AVIF can provide significant file size savings compared to traditional formats.
Batch process similar images
Save time by processing multiple images with the same settings using our batch compression feature.
Preview before saving
Always check the compressed result to ensure it meets your quality standards before downloading.
Best format for this task
Why JPEG works well
- • photographs
- • gradients
- • complex real-world scenes
Alternatives to consider
- • WEBP: transparency support and better compression at similar quality
- • PNG: lossless output when alpha or text edges must stay crisp
Real-world compression test results
Encoded with the codecs this tool ships, on a synthetic set covering screenshots, photos and logos. Sizes are actual output bytes, not estimates.
| Source | Dimensions | Input | Output | Size | Saved | Observed tradeoff |
|---|---|---|---|---|---|---|
| UI screenshot | 1280×800 | 142 KB | JPEG q70 | 25 KB | 82.1% | visible softening on fine edges and text; gradients stay smooth |
| UI screenshot | 1280×800 | 142 KB | JPEG q85 | 33 KB | 76.8% | minor edge softening; flat color areas remain clean |
| UI screenshot | 1280×800 | 142 KB | WEBP q70 | 5 KB | 96.8% | slight blur in gradients; edges hold up better than JPEG; alpha preserved |
| UI screenshot | 1280×800 | 142 KB | WEBP q85 | 5 KB | 96.2% | near-original quality; alpha preserved |
| UI screenshot | 1280×800 | 142 KB | AVIF q70 | 1 KB | 99.2% | compression artifacts visible only in fine gradients; alpha preserved; encode is slowest |
| UI screenshot | 1280×800 | 142 KB | AVIF q85 | 1 KB | 99.1% | excellent quality at small size; alpha preserved; encode is slowest |
| Photo | 1280×960 | 3.7 MB | JPEG q70 | 86 KB | 97.7% | visible softening on fine edges and text; gradients stay smooth |
| Photo | 1280×960 | 3.7 MB | JPEG q85 | 288 KB | 92.3% | minor edge softening; flat color areas remain clean |
| Photo | 1280×960 | 3.7 MB | WEBP q70 | 188 KB | 95% | slight blur in gradients; edges hold up better than JPEG; alpha preserved |
| Photo | 1280×960 | 3.7 MB | WEBP q85 | 373 KB | 90% | near-original quality; alpha preserved |
| Photo | 1280×960 | 3.7 MB | AVIF q70 | 297 KB | 92.1% | compression artifacts visible only in fine gradients; alpha preserved; encode is slowest |
| Photo | 1280×960 | 3.7 MB | AVIF q85 | 523 KB | 86% | excellent quality at small size; alpha preserved; encode is slowest |
| Logo | 512×512 | 216 KB | JPEG q70 | 6 KB | 97.1% | visible softening on fine edges and text; gradients stay smooth |
| Logo | 512×512 | 216 KB | JPEG q85 | 11 KB | 95.1% | minor edge softening; flat color areas remain clean |
| Logo | 512×512 | 216 KB | WEBP q70 | 86 KB | 60% | slight blur in gradients; edges hold up better than JPEG; alpha preserved |
| Logo | 512×512 | 216 KB | WEBP q85 | 87 KB | 59.5% | near-original quality; alpha preserved |
| Logo | 512×512 | 216 KB | AVIF q70 | 40 KB | 81.3% | compression artifacts visible only in fine gradients; alpha preserved; encode is slowest |
| Logo | 512×512 | 216 KB | AVIF q85 | 55 KB | 74.4% | excellent quality at small size; alpha preserved; encode is slowest |
Batch Compression FAQ
How do I compress images for bulk?
Use our specialized compression tool optimized for bulk. Upload your images, adjust settings, and download the optimized results.
What format is best for bulk?
The best format depends on your specific needs. WebP offers great compression for most use cases, while PNG is ideal when you need lossless quality.
Can I compress multiple images at once?
Yes, our batch compression feature lets you process multiple images simultaneously with the same settings.
Is the compression process secure?
Absolutely. All compression happens locally in your browser - your images never leave your device.