Compression depends on content
Photographs often compress well as JPEG or WebP. PNG is useful for transparency and graphics but may remain larger. Re-encoding an already optimized file can produce little reduction.
Image Compressor
Compress a batch of images locally in your browser. Choose an output format and quality, optionally limit width and height, then compare original and output sizes before downloading.
Features
Quality adjustment (10-100%)Multiple format supportBatch processingImage resizingBefore/after previewClient-side processing
How to use the Image Compressor
- 1Choose or drag in one or more images.
- 2Select JPEG, PNG, or WebP and adjust the quality setting.
- 3Optionally set maximum dimensions and preserve the aspect ratio.
- 4Compress the images, compare the results, and download each completed file.
Common uses
- Reduce website image payloads.
- Shrink photos before email or form submission.
- Resize and compress a batch to consistent limits.
Local batch processing
Canvas processing happens in the browser and source images are not uploaded. Download All starts separate downloads for the finished files.
Frequently asked questions
Which format usually creates the smallest file?
WebP often performs well for web images, while JPEG is broadly compatible for photographs. The best choice depends on the image and required transparency.
Can I resize while compressing?
Yes. Set optional maximum width and height values and keep the aspect ratio enabled.
Are source images uploaded?
No. Compression runs locally in your browser.