Bring a heavy PDF down to a sensible size, without anything leaving your browser.
Flatten to images rebuilds each page as a picture, which shrinks scans and image-heavy PDFs a lot. Text stops being selectable, so it suits documents you want to send or print.
the Keep text mode tidies the file structure and leaves the text selectable, with a smaller saving. Everything runs in your browser, so the PDF never leaves your device.
Bring a heavy PDF down to a size that sends easily, all inside your browser. Choose the mode that suits your file, and you see the saving before you download.
Flatten to images is the strong option and works wonders on scans and image-heavy PDFs, though it turns the pages into pictures so the text is no longer selectable. Keep text tidies the file and holds on to selectable text, with a gentler saving. Nothing is uploaded, so even private documents stay with you.
That's the whole list. A short note when there's something new worth your time. Leave whenever you like.
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