ZingPDF 1.0.48

ZingPDF

ZingPDF is a proprietary .NET 8 library for loading, creating, editing, and saving PDFs in C#.

It covers the PDF jobs many applications need first: page editing, document assembly, text extraction, form filling and flattening, watermarking, compression, metadata updates, encryption, and clean rewrites without prior incremental history.

Installation

dotnet add package ZingPDF

Quick start

Create a blank PDF, write text, and save it:

using ZingPDF;
using ZingPDF.Fonts;
using ZingPDF.Graphics;
using ZingPDF.Syntax.CommonDataStructures;

using var pdf = Pdf.Create();
var page = await pdf.GetPageAsync(1);
var font = await pdf.RegisterStandardFontAsync(StandardPdfFonts.Helvetica);

await page.AddTextAsync(
    "Hello from ZingPDF",
    Rectangle.FromDimensions(320, 72),
    font,
    18,
    RGBColour.Black);

await pdf.SaveAsync(File.Create("hello.pdf"));

Fill and flatten a PDF form:

using ZingPDF.Elements.Forms.FieldTypes.Text;

using var input = File.OpenRead("form.pdf");
using var output = File.Create("form-completed.pdf");
using var pdf = Pdf.Load(input);

var form = await pdf.GetFormAsync();
var nameField = await form.GetFieldAsync<TextFormField>("Customer.Name");
await nameField.SetValueAsync("Ada Lovelace");

await form.FlattenAsync();
await pdf.SaveAsync(output);

Export selected pages into a new document:

using var input = File.OpenRead("packet.pdf");
using var output = File.Create("selected-pages.pdf");
using var pdf = Pdf.Load(input);
using var selectedPages = await pdf.ExportPagesAsync([1, 3, 5]);

await selectedPages.SaveAsync(output);

Main workflows

• create new PDFs and append, insert, delete, export, or split pages
• add text, images, and watermarks to pages
• register standard PDF fonts and embedded TrueType fonts
• read and update metadata
• extract text from full documents or individual pages
• fill and flatten AcroForm fields
• merge PDFs and save combined output
• compress output and tune image quality
• decrypt, encrypt, and rewrite PDFs without prior incremental history

Documentation

• repository: github.com/ZingPDF/ZingPDF
• docs: zingpdf.dev/docs.html
• guides: zingpdf.dev/guides.html
• capability matrix: zingpdf.dev/capabilities.html
• performance: zingpdf.dev/performance.html
• API reference: zingpdf.dev/api/
• examples folder: github.com/ZingPDF/ZingPDF/tree/main/examples

Package split

• ZingPDF: core PDF load, edit, save, page, text, form, metadata, and encryption APIs
• ZingPDF.GoogleFonts: download and register Google Fonts
• ZingPDF.OCR: OCR support for scanned and image-based PDF pages
• ZingPDF.FromHTML: render HTML to PDF through PuppeteerSharp

Licensing

ZingPDF is proprietary software. Review LICENSE.txt and ensure you have an active paid subscription with sufficient seats, or another applicable commercial agreement, before commercial use or commercial bundling.

Support and compatibility

See SUPPORT.md in the package root or docs/project/SUPPORT.md in the repository for the current support stance and release-readiness notes.