Image compressor

Compresses JPG, PNG and WebP with a live before/after view. Drag the quality slider and watch the file size update in real time alongside a comparison view. JPG and WebP use the canvas encoder; PNG is repacked via canvas as well (lossless quality control comes from filter strategy, not quality value). The tool is honest about the limits: a canvas-recompressed JPG is not pixel-identical to the source, since the encoder picks its own quantization tables. Use it for size — not for archival quality preservation. Batch mode for multiple files. Runs entirely in the browser.