Image Compressor
Shrink JPG, PNG and WebP file sizes in your browser without uploading. Adjust quality and download instantly.
Runs in your browser — files never leave your device
How it works
Choose an image and the tool re-encodes it in your browser at the quality you pick, showing the original and compressed sizes side by side.
Because everything runs locally, there is no upload wait and no privacy risk — ideal for photos, screenshots and assets you don’t want leaving your device.
Frequently asked questions
- Are my images uploaded to a server?
- No. Compression runs entirely in your browser using a Web Worker — your images never leave your device.
- Which formats are supported?
- JPG, PNG and WebP. The output keeps the original format while reducing file size.
- Will compression reduce quality?
- Lower quality means smaller files. Use the quality slider to balance size against visual fidelity; 70% is a good starting point.
Related tools
- Image ResizerResize images to exact dimensions or by percentage, with optional aspect-ratio lock. Runs entirely in your browser — images never leave your device.
- Bulk Image CompressorCompress many images at once, entirely on your device. Pick a quality and download them all.
- Image Converter (PNG / JPG / WebP / AVIF)Convert images between PNG, JPG, WebP and AVIF locally — no upload, no quality sent to a server.
- Image CropperCrop images to a custom selection or aspect ratio in your browser. Download the cropped result.
- Image Rotator & FlipperRotate or flip images by 90° increments locally and download the result instantly.
- Image to Base64Convert an image to a Base64 data URL in your browser — handy for embedding in CSS or HTML.