Image / Continuous editor
Compress JPEG, PNG or WebP images locally, compare file sizes and download the processed result without uploading the original.
Your image preview will appear here.
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Method, example & boundaries
Reduce a JPEG, PNG, or WebP file locally while comparing the original and exported byte sizes. The quality control changes lossy encoding strength; the page reports the measured saving rather than promising a fixed percentage that cannot hold across photographs, screenshots, and already-optimized files.
One locally encoded image with unchanged pixel dimensions plus measured original size, result size, and percentage difference.The percentage is calculated only after encoding: (original bytes − result bytes) ÷ original bytes. Visual suitability still requires previewing edges, text, and gradients.
The browser decodes the selected image into a canvas, exports it with the chosen quality using a supported raster codec, and measures the resulting Blob. Nothing is sent to an image API, and source metadata is not copied into the export.