Tools / Image
Image Compressor
Name a file size and this hunts for the highest quality that fits under it. Compression happens in your browser — the image is only uploaded if you choose to download it.
OptimizeJPGWebP
How it lands the target
It binary-searches encoder quality for the best-looking file that still fits your target. If quality alone cannot get there, it steps the resolution down and searches again.
What leaves your device
Nothing, until you press Download. Choosing a file, changing settings, and compressing all happen locally in your browser.
What Download does
It saves the compressed file to your device and archives a copy to private storage, then clears it from this page.