Merge, split or organize a PDF: choose the right task

Choose by what should happen to the pages

Merge PDF joins pages from several documents in a chosen file order. Split PDF creates an output from selected pages. Organize PDF brings page selection, reordering, rotation and removal into one workspace. For a short task, the dedicated Extract, Delete, Rotate and Reorder pages open the appropriate operation.

Review the downloaded document

Preview the intended order before processing, then open the resulting PDF and check the first and last pages as well as any rotated pages. The local engine uses pdf-lib for page operations. Page copying is not a promise to preserve every document-level feature.

Reference: pdf-lib: copying and modifying PDF pages

Protected files and document features

Encrypted PDFs are rejected. Obtain an unencrypted copy from the owner before trying again. Digital signatures, interactive forms, bookmarks and accessibility structure may not survive page reconstruction as expected; keep the original and use a suitable document workflow when those features matter. Deleting a page is not a sanitization or secure-redaction guarantee.

Work within the displayed limits

The normal PDF limits are 40 MiB and 200 pages; lower-resource mode reduces them to 10 MiB and 50 pages. The workspace displays the active limits and rejects unsupported inputs. If a document is too large, use a smaller source document or split it with an appropriate local application first.