Image Compressor
Compress an image and see exactly what it costs. Split-view before and after, live size readout, and a preset that finds the smallest size you cannot tell apart. Nothing is uploaded.
Pick any format (JPEG, WebP, AVIF, PNG, JPEG XL), drag the quality slider, and drag the divider to compare against the original at 1:1. The size and the perceptual score update as you go.
Two automatic modes: "smallest I cannot tell apart" searches for the lowest quality that still scores above the perceptual threshold, and a target-size mode fits the file into a byte budget.
PNG gets a real quality knob: color reduction with dithering, which is what actually shrinks a screenshot, rather than lossless optimization that buys 10%.
Everything runs in your browser. The image is never uploaded to our server.
Two automatic modes: "smallest I cannot tell apart" searches for the lowest quality that still scores above the perceptual threshold, and a target-size mode fits the file into a byte budget.
PNG gets a real quality knob: color reduction with dithering, which is what actually shrinks a screenshot, rather than lossless optimization that buys 10%.
Everything runs in your browser. The image is never uploaded to our server.