Batch Compress Images
Compress up to 20 images at once. JPEG, PNG, WebP. Download as ZIP. Free, private.
Bulk Image Compression
Compress up to 20 images at once using the same MozJPEG and WebP encoders as the single-image tools, all in one pass. Set one quality level for the whole batch, then download every result together as a ZIP — nothing is uploaded, since each image is compressed locally in your browser.
Quality by use case
| Use case | Quality | Typical size reduction |
|---|---|---|
| Thumbnails / email | 70–75 | 75–85% smaller |
| General web images | 75–85 | 60–80% smaller |
| Professional / portfolio | 85–90 | 40–60% smaller |
For individual images, try our dedicated JPEG, PNG, or WebP compressors with format-specific options.
Frequently asked questions
How many images can I compress at once?
Up to 20 per batch. Process additional sets one after another if you have more.
Can I mix formats in a batch?
Yes — drop JPEG, PNG, and WebP together, and each is compressed with the appropriate encoder.
How do I download everything?
Once processing finishes, download the whole batch as a single ZIP archive.
Is a batch uploaded to a server?
No. Every image is compressed locally in your browser; nothing is uploaded.
What quality setting should I use for a batch?
75–85 covers most web images. Use 85–90 for professional or portfolio photos where detail matters more, and 70–75 for thumbnails or email attachments where size matters most.
Is batch compression safe for irreplaceable photos?
Yes, as long as you keep the originals — compress copies, not your only copy, and use a higher quality setting (85–90) for anything you can’t reshoot.
Does a bigger batch take longer?
Processing time scales with the number and resolution of images, but there’s no upload wait since everything runs locally. Large batches of high-resolution photos take the longest on the encode step itself.
Can I set a different quality for each image in a batch?
No — one quality and format apply to the whole batch. For different settings per image, run smaller batches or use the format-specific compressor.