De-merging a PDF means splitting a combined document back into its original separate files or dividing it by page ranges. Useful for sharing individual sections or separating confidential content.
If the merged PDF has bookmarks, split at bookmark boundaries — each top-level bookmark becomes a separate output file. This is the most accurate way to recover original documents when bookmarks were preserved during the original merge.
If the PDF was merged without preserving bookmarks or metadata, there is no automatic way to detect original file boundaries. Specify page ranges manually, using the table of contents, section headings, or page headers as reference points.
Quick answers about this PDF task.
Use a PDF splitter: upload the combined PDF, choose your split method (page range or every N pages), and download the individual files.
Only if bookmarks were preserved during the original merge. Otherwise use page ranges to manually recreate boundaries.
No. PDF splitting is lossless — pages are extracted as-is with no re-encoding.
Use the ‘split every N pages’ option with N=10. The tool outputs 10 separate PDFs of 10 pages each.
No sign-up, no watermark, no file size limit.
⬇ Split PDF Free – PDF Agile