We use cookies to give you the best experience on our website. If you continue to browse, then you agree to our privacy policy and cookie policy. Image for the cookie policy date
Unfortunately, activation email could not send to your email. Please try again.
Syncfusion Feedback

Trusted by the world’s leading companies

Syncfusion Trusted Companies


Syncfusion Essential PDF is a .NET Core PDF library that allows you to combine or merge different PDF files into one file and split a PDF file into different sub-documents quickly and accurately. Merge and split PDF functionalities can be used in any .NET Core application. It will help you split, combine, import, and append PDFs with just a few lines of code using C# or VB.NET.

Split PDF

Developers can easily and accurately disassemble a multi-page PDF document into two or more separate PDF files by pages. It is also possible to generate files with destination file name pattern. Besides this process, developers can also import or delete certain pages from the existing PDF file.

  • Split PDF files by individual pages, page ranges. files by file size, and bookmarks.
  • Password-protect a split PDF.

Split PDF

Merge PDF

Merge PDF

The Syncfusion .NET Core PDF library combines or merges different PDF files or pages to form a single document. It preserves the exact layout, form fields, annotations, bookmarks and appearance of the source files. Besides this process, developers can also create a new PDF with certain pages from the existing document and also combine group of PDF files from specific directory or folder.

  • Combine multiple PDF files from disk and stream.
  • Import or insert pages from one PDF file to another.
  • Specify a range of pages to be merged from separate PDF documents.
  • Password-protect the combined PDF.

Other features of PDF split and merge

  • Rotate PDF pages and merge.
  • Convert landscape to portrait and merge.
  • Crop PDF page and combine.
  • Merge and fill form fields.
  • Create bookmarks based on the combined document.
  • Combine and digitally sign the PDF.



Syncfusion’s file format components helped me create the reports I needed, fast. – J. Pereira, Software Developer.

The libraries have been built from scratch and refined for more than a decade to provide blazing-fast performance, comprehensive API, and compatibility across the latest and older versions of these files.

CONTINUE READING View all Customer Stories


Syncfusion File Format Libraries - Manipulate Excel, Word, PowerPoint, and PDF files

Read and write Excel, Word, PDF, and PowerPoint files. Also includes integrated visualization capabilities. Advanced features include support for pivot tables, pivot charts, mail-merge, and extensive formatting.


Succinctly Series: Statistics Using Excel Succinctly

Succinctly Series: Statistics Using Excel Succinctly

- by Charles Zaiontz


Greatness—it’s one thing to say you have it, but it means more when others recognize it. Syncfusion is proud to hold the following industry awards.

Scroll up icon

Warning Icon You are using an outdated version of Internet Explorer that may not display all features of this and other websites. Upgrade to Internet Explorer 8 or newer for a better experience.Close Icon

Live Chat Icon For mobile
Live Chat Icon