Tool Fu
$ toolfu run image-compressor

Image Compressor — Compress Images Online Free

Compress images online for free. Reduce file size with adjustable quality, output format, and optional resizing — runs in your browser.

all processing runs in your browser
image-compressor
output format
quality = 75%lower = smaller file
max width (0 = keep original)

$ drop images here or click to browse

supports PNG, JPG, WebP, GIF — multiple files — max 50MB each

or paste from clipboard (⌘V / Ctrl+V)

Free Image Compressor

Compress images to reduce file size while maintaining quality. Choose output format, quality level, and max width.

Features

  • JPG, WebP, and PNG output formats
  • Adjustable quality (5–100%)
  • Optional max-width resize
  • Batch compression
  • 100% private — runs in your browser
$ cat FAQ.md
How does compression work?
Images are re-encoded using the browser's Canvas API at your chosen quality level and output format (JPG, WebP, or PNG). Lower quality = smaller files.
Are my images uploaded?
No. All processing runs in your browser. Nothing leaves your device.
Can I resize while compressing?
Yes. Set a maximum width and images wider than that will be scaled down proportionally.
Which format gives the smallest files?
WebP typically produces the smallest files at equivalent quality, followed by JPG. PNG is lossless and usually largest.