Image Compressor
Compresses images with a quality slider and an instant before/after comparison of file size and visual quality. Alternatively set a target file size (say, under 200 KB) and the tool searches for the quality that just fits the budget. A draggable swipe view compares the original and the compressed result pixel by pixel. Optionally scales the image down at the same time, and processes batches of files.
Runs 100% in your browser — images never leave your device.
Read the full guide to this tool
Notes
- JPEG and WebP quality is a true lossy dial. PNG stays lossless, so the tool reduces PNG size via optional colour quantization instead.
- In target-size mode the tool binary-searches the quality setting until the file fits the budget, and says so plainly when even the lowest quality cannot reach it.
- Everything runs locally in your browser; your images are never uploaded to any server.
Explore the idea
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