Image Compressor
Shrink images without losing quality.
Runs in your browserRelated
About
Image Compressor reduces PNG, JPG, and WebP file size with a quality slider, showing a before/after comparison slider so you can see exactly what you're trading off before downloading. It recompresses automatically as you adjust quality, debounced so dragging the slider stays smooth. A savings summary shows the percentage and byte reduction. Everything happens in your browser — images are never uploaded.
Frequently asked
- How much can it shrink a file without visible quality loss?
- It depends on the source image, but the before/after compare slider lets you judge visually at each quality level rather than guessing — most photos hold up well down to 70-80% quality.
- Does it upload my image to compress it?
- No, compression runs locally using the Canvas API; the original file never leaves your device.