Image Compressor
Image ToolsShrink JPG, PNG and WEBP files with a quality slider and before/after sizes.
Runs entirely in your browser — nothing is uploaded
Features
- Quality slider with a live size estimate.
- Side-by-side before and after preview.
- Batch several images in one pass.
- Compression runs on canvas in your browser — no uploads.
How to use the Image Compressor
- 1Drop in one or more images.
- 2Move the quality slider until the preview still looks right.
- 3Download the compressed files.
Frequently asked questions
What quality should I use?
Around 75–85% is the usual sweet spot for photographs: a large size saving with no visible loss at normal viewing sizes.
Are my images uploaded?
No. Files are read locally with the File API and processed on a canvas. Nothing leaves your device.