Lighter when possible
Each result shows the actual space saved. If compression would make a file larger, the original is kept.
Reduce image size.
Keep the detail you need.
Add up to 20 images, choose a compression level, and see how much space each result saves. Everything runs locally in your browser.
Local processingUp to 20 imagesBefore-and-after comparison
Image Compressor
JPG, PNG and WebP · 50 MB per file
Drop images to compress
Supports JPG, PNG and WebP. Select up to 20 images, each no larger than 50 MB.
Images are processed only in this browserWhat compression changes
Smaller files, with the same image dimensions.
SirPic keeps pixel dimensions unchanged. Quality controls JPG and WebP output; PNG is re-encoded losslessly, so an already optimized file may not become smaller.Dimensions stay the same
Compression reduces file data; it does not resize the image's pixel width or height.
Files stay private
Reading, encoding and download preparation all happen locally in your browser.
How it works
Compress a batch in three steps.
- 01
Add your images
Choose files or drag up to 20 JPG, PNG or WebP images into the queue.
- 02
Set the compression level
Use Balanced for most images, or choose more detail, a smaller file, or a custom quality.
- 03
Compare and download
Check the actual size reduction, compare a result with its original, then download one file or the whole batch.