Free Online Bulk Image Compressor Tool
No sign-up or login required. Upload multiple images at once for batch compression; all processing runs locally in your browser with no server upload. Supports JPG, PNG, WebP, GIF, AVIF, HEIC, and RAW (ARW/CR2/CR3/NEF/DNG) for web performance, e-commerce image optimization, and social media publishing.
Compress hundreds of images at once
Batch-compress JPG, PNG and WebP files locally in your browser — nothing ever leaves your device.
Batch Processing
Process multiple images simultaneously with intelligent batching for optimal performance and efficiency.
Smart Compression
Advanced algorithms automatically optimize compression settings for each image format to achieve the best size reduction.
Complete Privacy
All processing happens locally in your browser. Your images never leave your device, ensuring maximum privacy and security.
Frequently Asked Questions
How many images can I compress at once?
There's no strict limit on the number of images you can compress simultaneously. However, for optimal performance, we process images in batches of 2 at a time. The actual limit depends on your device's memory and browser capabilities.
Can I download all compressed images at once?
Yes! Once all images are successfully compressed, you can click the 'Download All' button to download all compressed images as a single ZIP file. This makes it easy to get all your processed images in one go.
What happens if some images fail to compress?
If certain images fail during compression, you can still download the successfully compressed images. Failed images will be marked with an error status, and you can try re-processing them individually or remove them from the batch.
Are there any file size restrictions for batch compression?
Since all processing happens locally in your browser, the main limitation is your device's available memory. We recommend keeping individual files under 50MB and being mindful of the total memory usage when processing many large files simultaneously.