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.

Following are the key features of ComPDFKit.

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.
– Switch between different themes, including Dark mode, Sepia mode, Reseda mode, and Custom color mode.
– Text reflow.

Annotations:
– Create, edit and remove annotations, including Notes, Link, Freetext, Line, Square, Circle, Highlight, – – Underline, Squiggly, Strikeout, Ink, and Stamp.
– 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 PDF Forms.
– Support for PDF form flattening.

Document editor:
– PDF manipulation, including Split pages, Extract pages, and Merge pages.
– Page edit, including Delete pages, Insert pages, Move pages, Rotate pages, Replace pages, and – Exchange pages.
– Access document information.
– Extract images.

Security:
– Encrypt and decrypt PDFs, including Permission setting and Password protected.
– Create, edit, and remove watermark.
– Redact content including images, text, and vector graphics.

Conversion:
– PDF to Word.
– PDF to Excel.
– PDF to PPT.
– PDF to PDF/A.