Linearization (fast web view) reorders the file so the first page appears while the rest is still downloading. Free, unlimited, and no file ever gets uploaded to a server.
100% private: everything runs on your computer, your files never leave your device.
It linearizes the file: its internal objects are reordered so a browser can show the first page while the rest is still downloading. This is also known as fast web view.
No. The optimization runs entirely in your browser, on your own computer. Your file never leaves your device.
No. Pages, text and images stay exactly the same; only the internal ordering of the file changes.
Linearization by itself keeps the size roughly the same. On the same screen you can pick a compression level to also reduce the file size.
Open it in the Doctor PDF or Analyze PDF tools: they report whether the file is linearized (fast web view).