ComPDFKit PDF SDK - 2026 Pricing, Features, Reviews & Alternatives

ComPDFKit PDF SDK is the product of ComPDF. Offer a top-quality PDF SDK, PDF API, and PDF Server for developers or companies. It allows them to integrate PDF editing, annotating, converting, form filling, digital signing, comparing, measuring, and redacting into any device.

All ComPDF Products:

1. ComPDFKit PDF SDK:

PDF Editing:

- Edit PDF Text like Word

- Edit Images

Viewer:

- Standard page display modes, including Scrolling, Double page, Crop mode, and Cover mode.

- Navigation with thumbnails, outlines, and bookmarks.

- Text search & selection.

- Zoom in and out & Fit-page.

- Switch between different themes, including Dark mode, Sepia mode, Reseda mode, and Custom color mode.

- Text reflow.

Annotations:

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

- Support for annotation appearances.

- Import and export annotations to/from XFDF.

- Support for annotation flattening.

Forms:

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

- Fill out PDF Forms.

- Support for PDF form flattening.

Document editor:

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

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

- Document information setting.

- Extract images.

Security:

- Encrypt and decrypt PDFs, including Permission setting and Password protection.

- Create, edit, and remove the watermark.

- Redact content like images, text, and vector graphics.

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

- Create, edit, and remove Bates numbers.

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

Conversion:

- PDF to/from Word.

- PDF to/from Excel.

- PDF to/from PPT.

- PDF to/from TXT.

- PDF to/from CSV.

- PDF to PDF/A.

- PDF to/from Image: PDF to/from JPG, PDF to/from PNG.

- PDF to/from RTF.

- PDF to/from HTML.

Document Comparison:

- Overlay Comparison

- Content Comparison

OCR:

- Recognize text from images or scanned PDFs.

1. ComPDFKit PDF SDK: Your comprehensive foundation for all things PDF. This core SDK provides everything needed to view, create, edit, annotate, sign, and secure PDF documents within your application. Features include advanced rendering, form filling, digital signatures, redaction, text/image editing, and more – offering complete control over the PDF lifecycle.

2. ComPDFKit Conversion SDK: Bridge the gap between PDF and other critical formats. This powerful SDK enables high-fidelity, bidirectional conversion between PDF and a wide range of files, including:

Office Formats: DOCX, XLSX, PPTX

Images: PNG, JPG, TIFF, BMP

Web Formats: HTML

Text: TXT

More: RTF, CSV, JSON

Ensure seamless document workflows and interoperability.

3. ComIDP (Intelligent Document Processing SDK): Unlock the hidden value within your documents. ComIDP leverages AI and machine learning to provide advanced intelligent document processing capabilities, such as:

PDF Q&A

Data Extraction

Document Parsing

Document Recognition

Intelligent Image Processing