Private browser-local utility

Image Compressor

Reduce an image file locally by adjusting JPEG/WebP quality or explicitly resizing it while preserving the source format.

Choose a JPEG, PNG, or WebP image.

How it works

The browser decodes the visually oriented source, optionally downsizes it, and creates a new file in the same format. JPEG and WebP use the selected lossy quality. PNG uses lossless browser re-encoding because a JPEG-style quality slider does not control PNG encoding.

Limits and assumptions

Input is limited to 50 MB, 52 megapixels, and 16,000 pixels per side. Re-encoding can produce a larger file, especially for an already optimized PNG. The tool reports that result honestly. A new raster encoding strips EXIF, GPS, camera, and comment metadata.

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