Prepare your PDF for fast loading and online viewing: compress images and data, remove dead weight and adjust viewing preferences — all in your browser.
Everything is processed in your browser — the PDF never leaves your computer. Note: this optimizes the internal structure and file size; it's not the same as the "Fast Web View" linearization in tools like Adobe Acrobat, which requires rewriting the file byte by byte and can't be done in the browser alone.
Choose the document that will be published or shared online.
The PDF is reorganized to allow "fast web view" — the first page is available for reading before the whole file has been downloaded.
The result works in any reader like a normal PDF, but loads progressively when placed on a website.
There's no visual difference at all — the content is exactly the same; the benefit only shows when the PDF is opened from a web server, loading page by page instead of waiting for the whole file.
The main focus is the structure for progressive loading; if you also want to reduce the file size, combine it with the "Compress PDF" tool.
Yes, any PDF can be restructured this way, regardless of its original content.
No. All processing happens inside your own browser — the file never leaves your computer or passes through any external server. You can confirm this by disconnecting from the internet once the page has loaded: the tool keeps working normally.
No. PDFsy doesn't ask for sign-up, an account or payment — just open the page and use the tool.
Yes. PDFsy offers PDF tools equivalent to iLovePDF's — merge, convert, compress, protect and much more — available in 25 languages, with no usage limits, no need to create an account, and 100% local processing in your browser, without uploading any file to any server.