Image Optimizer

Optimize images with either Pica (resize focus) or jSquash (WASM codec) and download smaller files.

0 B Ready

Upload image

Drag and drop a PNG, JPG, WebP, or SVG file, or select one.

Choose file

Resize limits

Leave blank to keep the original size.

Quality

80%

Preview

Original

Optimized

Output

WebP 0 B

Pica is best for high quality resize jSquash uses WASM codecs for compression Files stay in your browser

How it works

Upload an image, choose the resize or codec engine, then export to WebP, JPEG, or PNG. Pica focuses on resize quality, while jSquash focuses on compression.

Use max width and height to keep the aspect ratio.
PNG is lossless, so size reduction is mostly from resizing.

Quick examples

Shrink and convert

4000 x 3000 JPG at 82%

1600 x 1200 WebP ~70%

Lossless export

1200 x 800 PNG

Try WebP for best size savings on photos.

Mini FAQ

Which engine should I use?

Use Pica for high quality resizing. Use jSquash for stronger codec compression.

Why is PNG not much smaller?

PNG is lossless. Use WebP or JPEG for better compression.

Are my files uploaded?

No. All processing stays in your browser.