How to use
- Drag & drop images into the box or click to select them.
- Choose the output format, quality and optionally a maximum width.
- Download the compressed images.
Why compress images?
Large images slow down websites, clog inboxes and exceed upload limits. This tool often reduces file size by 50–90% without visible quality loss.
WebP usually produces the smallest files and is supported by every modern browser. JPG is ideal for photos and works everywhere, PNG is best for graphics with transparency.
Frequently asked questions
Are my images uploaded?
No. Compression happens entirely in your browser. Your images never leave your device.
Which quality should I pick?
For photos, 70–80% is a good balance between file size and quality. Below 50% artifacts usually become visible.
Is there a limit on number or file size?
No. Very large images just take a little longer because your own device does the work.
Why doesn't the quality slider affect PNG?
PNG is lossless. To make PNGs smaller, set a smaller maximum width – or choose WebP instead.