ComPDFKit PDF SDK

ComPDFKit, a software development kit (SDK), consists of PDF SDK and PDF Conversion SDK. With this SDK, even developers with limited knowledge of PDF can quickly integrate professional PDF functions with just a few lines of code on multiple platforms.

ComPDFKit Updates
1. ComPDFKit API: https://api.compdf.com/api/pricing

Sign up and Get 100 Free Files Processing Monthly. Allow you to edit & convert PDF files, split/merge/insert/rotate/delete/extract PDF pages, and process PDFs with OCR.

1. Online Tools: https://www.compdf.com/pdf-tools

All are 100% free! Work with PDF in ComPDFKit online PDF tools to convert PDF files to/from docx, xlsx, pptx, png, jpg, html, txt, csv, rtf files.

1. Web Demo: https://www.compdf.com/webviewer/demo

View, Edit, Annotate, Compare, Sign, Encrypt, Decrypt, PDF files, and Create/fill forms online for free.

1. Signatures Digital signatures and electronic signatures for all your needs for signing documents.

Following are the key features of ComPDFKit.
1. PDF Editing
- Edit Text: Added text alignment in text editing, including left text alignment, right text alignment, center text alignment, and justify text alignment.
- Edit Images: Added support for image editing, like adding, deleting, moving, rotating, cropping, etc.

1. Viewer:
2. Standard page display modes, including Scrolling, Double page, Crop mode, and Cover mode.
3. Navigation with thumbnails, outlines, and bookmarks.
4. Text search & selection.
5. Zoom in and out & Fit-page.
6. Switch between different themes, including Dark mode, Sepia mode, Reseda mode, and Custom color mode.

7. Text reflow.

8. Annotations:

9. Create, edit and remove annotations, including Note, Link, Freetext, Line, Square, Circle, Highlight, Underline, Squiggly, Strikeout, Stamp, Ink, Sound

10. Support for annotation appearances.

11. Import and export annotations to/from XFDF.

12. Support for annotation flattening.

13. Forms:

14. Create, edit and remove form fields, including Push Button, Check Box, Radio Button, Text Field, Combo Box, List Box, and Signature.

15. Fill PDF Forms.

16. Support for PDF form flattening.

17. Document editor:

18. PDF manipulation, including Split pages, Extract pages, and Merge pages.

19. Page edit, including Delete pages, Insert pages, Crop pages, Move pages, Rotate pages, Replace pages, and Exchange pages.

20. Document information setting.

21. Extract images.

22. Security:

23. Encrypt and decrypt PDFs, including Permission setting and Password protected.

24. Create, edit, and remove watermark.

25. Redact content including images, text, and vector graphics.

26. Create, edit, and remove header & footer, including dates, page numbers, document name, author name, and chapter name.

27. Create, edit, and remove bates numbers.

28. Create, edit, and remove background that can be a solid color or an image.

29. Conversion:

30. PDF to Word.

31. PDF to Excel.

32. PDF to PPT.

33. PDF to TXT.

34. PDF to CSV.

35. PDF to PDF/A.

36. PDF to HTML.

37. PDF to RTF.

38. PDF to Images.

39. Document Comparison:

40. Overlay Comparison

41. Content Comparison