Reduce JPG, PNG and WebP file sizes by up to 80% with smart quality control. Keep images sharp. 100% free, browser-based, no upload.
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Images are typically the largest assets on any webpage or application. Compressing images reduces their file size, leading to faster page load times, reduced bandwidth costs, better Core Web Vitals scores, and improved SEO rankings. Google's PageSpeed Insights frequently cites unoptimized images as the top opportunity for performance improvement.
Lossy compression (used for JPEGs) permanently removes some image data to achieve smaller sizes. At high quality settings (80%+), the visual difference is imperceptible to the human eye. Lossless compression (used for PNG) rearranges and deduplicates data without any quality loss — ideal for logos, icons, and graphics with sharp edges.
Compressfy uses the browser's Canvas API to re-encode your image at the quality level you choose. For JPEGs, the encoder applies DCT (Discrete Cosine Transform) compression at the selected quality setting. For PNGs, it converts to JPEG for compression (lossy) or keeps as PNG with canvas re-encoding (lossless mode). WebP output uses the browser's native WebP encoder for maximum compression.
After compressing, consider converting your images to WebP format for an additional 25–35% size reduction on modern browsers, or resizing them to exact dimensions needed for your use case.