PDFium vs Spire.PDF
Both stand on PDF SDKs: PDFium at #8, Spire.PDF at #9.
The facts side by side
- Free tierPriceFree tier · $999 one-time
- —Public API—
- —Open source—
- YesFree tierYes
- NoFree trialYes
- —Web✓
- ✓Windows✓
- ✓Mac✓
- ✓Linux✓
- —iOS✓
- ✓Android✓
- ✓Free plan✓
- Rendering, parsing, document loading, text extraction, annotation, editing, form support, and PDF object accessPDF operationsCreation, reading, editing, rendering/conversion, merging, splitting, form processing, annotation, compression, security, digital signatures, printing, and content extraction.
- Windows, Linux, Mac, and Android buildsSupported platforms.NET Framework, .NET Core, Microsoft Azure, Xamarin, Java SE, Jakarta EE, Windows, Linux, Unix, macOS, Android, desktop, server-side, and web applications.
- C-compatible public API and C++ source codeLanguage coverageC#, VB.NET, Java, Python, C++, and JavaScript; Android via Java.
- client-sideDeployment modelhybrid
- ✓Annotation tools✓
- ✓Commercial license✓
- #8Standing on PDF SDKs#9