Split PDF by Bookmark

Break a PDF into one file per top-level bookmarked section.

Select a PDF

Click to choose, or drop a file here

Related PDF tools

Split PDFBreak a PDF into separate files by page range, or into equal chunks.Split PDF by File SizeBreak a PDF into chunks that each stay under a size you set — for email or upload limits.Add PDF BookmarksBuild a clickable outline (the Bookmarks panel) so readers can jump straight to any section.Extract pagesPull selected pages into a new PDF.

Split PDF by Bookmark — frequently asked questions

My PDF has no bookmarks — what happens?+

The tool tells you and you should use Split PDF with page ranges instead.

What about nested bookmarks?+

Only the top-level bookmarks are used as split points.

你們會把我的檔案上傳到伺服器嗎？+

不會——這裡的每個工具都完全在你的裝置上處理檔案，不會向伺服器上傳任何內容。唯一的例外是 AI 工具，它們會把擷取的文字（而非檔案本身）傳送給 Claude 來完成工作。

有檔案大小限制嗎？+

我們沒有人為設下限制，但由於處理過程在你的瀏覽器中進行，非常大的檔案（超過 500MB 或 1000 頁）會受你裝置記憶體的限制，而非我們的限制。