Utilities Windows
PDFTK Builder
Merge, split, reorder and rotate PDF pages with PDFTK Builder, a free Windows interface for PDFTK that also adds stamps, backgrounds and page numbers.
- Operating system
- Windows; Softonic lists Windows 8
- Architecture
- Not specified by the publisher
- Download package
- EXE installer
Publisher's full installation includes PDFTK 1.41. No installation or modern Windows compatibility test performed.
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What is PDFTK Builder?
PDFTK Builder is Angus Johnson's graphical interface for PDFTK. It works on PDF pages and documents: combine several files, select page ranges, rearrange pages or split a document into one numbered PDF file per page. The Join view lets you control the order of the source documents and choose which pages to include.
Other tabs add a background or foreground stamp from another PDF, apply page numbers, or rotate a selected page range by 90 or 180 degrees. Document protection offers separate owner and user passwords; the publisher distinguishes restrictions on document actions from a password required to open the file.
This is a page-management utility rather than a full editor for rewriting text or changing page layouts. Backgrounds and stamps must be supplied as PDF documents, and page-number placement defaults are adjusted through PdftkBuilder.ini. The publisher lists version 3.10.0 and a page update dated July 2018; modern Windows compatibility has not been established here. The screenshot is the publisher's older 3.9.8 interface, not evidence of a 3.10.0 installation.
What it offers
- Join multiple PDFs in a chosen order and select page ranges to reorder, omit or duplicate pages.
- Split each page of a PDF into a separate numbered PDF document.
- Apply a PDF background or foreground stamp and add page numbers.
- Rotate selected page ranges left or right by 90 degrees, or by 180 degrees.
- Set owner and user passwords for document permissions and opening access.
Good to know
- Not a full text or page-layout editor; its documented tools focus on page and document management.
- Backgrounds and stamps require another PDF; page-number placement defaults are changed in PdftkBuilder.ini.
- The publisher page was last updated in July 2018; Windows 10 and 11 compatibility is not verified here.
Product images

Sources
References used for this listing. Retrieval dates do not indicate hands-on testing.