Free batch image compression tool
Batch Image Compression
Compress images locally in your browser with batch export
File upload
Drag images here or click to upload
Supports JPEG, PNG, WebP, and GIF
Batch Image Compression
Compress JPEG, PNG, WebP, and GIF images locally in your browser
File upload
Drag images here or click to upload
Supports JPEG, PNG, WebP, and GIF
Waiting for images
Upload image files and click "Start compression". Results will appear here.
Free browser-based batch image compression tool
Image Watermark includes a free online batch image compression tool for JPEG, PNG, WebP, and GIF files. Images are read and processed locally in your browser, then exported individually or as a ZIP archive.
The tool is useful for improving website performance, reducing ecommerce product image sizes, preparing social media assets, shrinking email attachments, and archiving team image files.
Multiple formats
Compress JPEG, PNG, WebP, and GIF images while keeping the original format by default.
Batch processing
Select multiple images, process them together, and review size savings for each file.
Local privacy
Compression happens in the browser, which reduces exposure for private or work images.
Frequently asked questions
Is this batch image compression tool free?
Yes. Image Watermark includes a free browser-based image compression tool that does not require an account.
Are images uploaded to a server?
No. Compression runs locally in your browser, so your image files are not uploaded to a remote server.
Which image formats are supported?
The tool supports JPEG, PNG, WebP, and GIF images. It keeps the original format by default and supports batch ZIP downloads.
Can I compress multiple images at once?
Yes. You can select multiple images, compress them in a batch, compare file sizes, and download all completed files together.
Who is this useful for?
It is useful for website performance work, ecommerce product images, social media assets, email attachments, and team asset archives.