Image Compressor
Make JPG, PNG, and WEBP files smaller without changing their format.
Your input stays on this device and is processed in your browser.Choose a JPG, PNG, or WEBP image
The file is processed locally and never uploaded.
JPG · PNG · WEBP · 1 file · max 25 MB · max 40,000,000 pixelsHow to use Image Compressor
- Choose one JPG, PNG, or WEBP image; processing does not start yet.
- Set output quality for JPG or WEBP, or an optimization level for PNG, then press Compress.
- Check the size before and after, including bytes and percentage saved, then download the result.
Compression without a hidden conversion
JPG and WEBP compression is lossy: the output quality control tells the encoder how much visual detail to retain, not what percentage of bytes to remove. A lower setting often makes a photograph much smaller, but a second lossy save can also reveal blocks or soften fine texture. The result therefore keeps the source format and shows the measured difference instead of promising a target size in advance.
PNG follows a different path. It has no browser quality slider because ordinary PNG compression does not throw pixels away. A dedicated OxiPNG optimizer rewrites the PNG representation losslessly, and levels one through four choose how much work it performs. The colours and pixels stay intact; the saving may be modest when another optimizer has already processed the file.
Nothing runs merely because a file was selected. The preview and the controls appear first, and compression begins only after the action button is pressed. One image is handled at a time so its setting is an explicit decision, while the original remains untouched on the device. If changing JPG to WEBP is the real goal, the format converter is the clearer tool for that separate job.
Frequently asked questions about Image Compressor
Will compression change the image format?
No. JPG remains JPG, PNG remains PNG, and WEBP remains WEBP. Use the separate image converter when you need another format.
Why does PNG have a different control?
PNG optimization is lossless, so it has no quality trade-off. Its level controls how thoroughly the optimizer searches for a smaller encoding.
Can a compressed file be larger?
Yes. An already efficient image may not shrink when encoded again. The result reports this clearly so you can keep the smaller original.