🗜️ Image Compressor
Reduce image file size. All processing happens in your browser — nothing is uploaded.
Drop images here, or click to browse
Supports PNG, JPEG, WEBP, GIF, BMP
Output Format:
Image Compressor — FAQ
Is my image uploaded to a server when I compress it?
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No. All image processing happens entirely in your browser using the HTML5 Canvas API and JavaScript. Your file never leaves your device, making this tool completely private and secure. There are no file size limits imposed by server upload restrictions either.
What image formats can I compress?
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This tool supports JPEG, PNG, and WEBP as input formats. JPEG and WEBP are lossy formats that benefit most from quality-level compression. PNG uses lossless compression, so the quality slider primarily affects whether the output is re-encoded as JPEG/WEBP rather than making a lossless PNG smaller.
What quality setting should I use?
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For web use, a quality setting of 70–85% typically provides an excellent balance between visual quality and file size, with file size reductions of 40–70% compared to the original. Settings below 60% may introduce visible artifacts such as blockiness in JPEG images. For print or archiving, use 90% or higher.
Why does compressing a PNG not reduce the file size much?
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PNG uses lossless compression, which cannot discard image data. To meaningfully reduce a PNG, you need to either reduce image dimensions (resize), convert it to a lossy format like JPEG or WEBP, or reduce the color palette. For photographs, converting a PNG to JPEG at 80% quality typically reduces file size by 60–80%.
What is WEBP and is it better than JPEG?
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WEBP is a modern image format developed by Google that supports both lossy and lossless compression. At equivalent visual quality, WEBP files are typically 25–35% smaller than JPEG. All major modern browsers support WEBP, making it an excellent choice for web images where reducing page load time is important.