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Fast, private, and high-quality image conversion. Convert your photos to PNG, JPG, or WebP without uploading them to any server.
Click to upload or drag & drop
Supports PNG, JPG, WebP, SVG, AVIF
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Pro Tip: Converting to WebP can reduce file size by up to 80% without losing quality, making it perfect for website performance.
Our online image converter provides a professional-grade experience without the need for expensive software like Photoshop. Follow these simple steps:
Most online converters require you to upload your files to their cloud servers. This poses significant risks:
ToolBox is different. We use the WebAssembly and Canvas APIs to process images 100% locally. This means the data never leaves your device's memory. The conversion speed is limited only by your own processor, making it instant for most files.
Best for photographs and realistic images with smooth variations of tone and color. It uses lossy compression, which means it sacrifices some quality for smaller file sizes.
Ideal for images that require transparency or text sharpness (like screenshots and logos). It uses lossless compression, preserving every pixel perfectly, but file sizes are generally larger.
Developed by Google, WebP provides superior lossless and lossy compression for images on the web. WebP lossless images are 26% smaller in size compared to PNGs. WebP lossy images are 25-34% smaller than comparable JPEG images.
ABSOLUTELY. Your images never leave your computer. The conversion happens entirely in your browser using the Canvas API. No data is sent to any server.
Currently, we support converting to PNG, JPEG, and WebP formats. More formats like AVIF are processed if your browser supports them.
Since it runs on your device, the limit depends on your browser's memory and performance. We recommend files under 20MB for the best experience.