How Split PDF works
PDF Split lets you extract specific pages, reorder them, or delete unwanted ones and download the result as a new PDF. You select the page ranges you want to keep or remove, and pdf-lib assembles the new document entirely inside your browser tab. The original file stays on your disk and is never transmitted anywhere.
Under the hood, pdf-lib copies the chosen page objects, including their content streams, fonts and embedded resources, into a fresh document structure. Pages not included in your selection are simply left out; no re-rendering or re-encoding takes place. This means the text layer, vector graphics and embedded images in the output retain exactly the same quality as in the source file. If you need to split one file into several separate PDFs by range, the tool supports multiple output ranges in one pass.