PDFio is a simple C library for reading and writing PDF files.

Use the Office File API to create thumbnail images for Excel, Word and PDF documents.

Implement a PDF viewer in an ASP.NET MVC web application.

Use the Azure Key Vault API to sign a PDF document.

Extract the text of a PDF document and count the words' occurrences in a document text.

Use a PdfGraphics object to add interactive form fields to a PDF document.

Customize print output and specify settings for a specific document page.

Obtain a checked appearance name for a check box and specify the check box value.

A pdf document toolkit which splits, extracts and merges specified pdf files. Deployed with Flask and accessible via Web UI.

Use the PDF Document API to rotate document pages and save the result.

Use the PDF Document API to embed XMP metadata in PDF documents.

Implement a custom signer based on the Bouncy Castle C# API and use a custom digest calculator to calculate a document hash.

Use the PdfDocumentProcessor to add a visual signature to a document.

Create a custom timestamp client based on the Bouncy Castle C# API.

Implement a PDF viewer in an ASP.NET web application.

Extract the first page from a PDF document into a separate document.

Export a PDF document to multi-page Tiff and bitmap images.

Use the PDF Document API to apply multiple PKCS#7 signatures with X.509 certificates.

Access and modify custom document properties.

Use the PDF Document API to create a document with graphics in code.