Image Compressor
Compress and resize images locally without quality loss.
converters & formatters · client-side · works offline
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Compress and resize images privately in your browser
Upload a JPEG, PNG, or WebP image and this image compressor shrinks the file size using the browser's canvas API - no server, no upload, no account. A quality slider lets you trade file size for fidelity, and an optional max-dimension field resizes large images while keeping the aspect ratio. Before and after file sizes are shown side by side so you know exactly how much you saved.
Because all processing happens locally via canvas and FileReader, your images never leave your device - important for private photos, client assets, or anything sensitive. The tool rejects non-image files and files over 20 MB with a clear message. Download the compressed file when you're happy with the result. It works offline once the page has loaded.
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