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PDFium

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PlanBilled and limitsPrice
PDFium (Apache License 2.0)No charge or royalty under the license · build and embed the source yourselfFree

As pdfium.googlesource.com lists them, read 4 Oct 2026. The maker's own page has the final word.

Facts from PDFium's own pages

API stability limit
Only headers under public/ are intended for embedders; code outside that directory may change at any time and should not be called directly. · pdfium.googlesource.com, 4 Oct 2026
Architecture limit
The project says some code may not work properly on big-endian architectures and that supporting them is not currently a priority. · pdfium.googlesource.com, 4 Oct 2026
Build tools
PDFium uses Chromium's build tooling, with GN generating build files and Ninja executing them. · pdfium.googlesource.com, 4 Oct 2026
Compiler support
PDFium currently supports Clang, allows community-contributed GCC patches, and does not accept MSVC patches. · pdfium.googlesource.com, 4 Oct 2026
Document features
The core document logic includes bookmarks, annotations, interactive AcroForms, and links. · pdfium.googlesource.com, 4 Oct 2026
Embedding
The public directory contains API headers intended for use by applications embedding PDFium, and the project aims to keep those APIs stable. · pdfium.googlesource.com, 4 Oct 2026
JavaScript and XFA
Builds enable JavaScript and XFA form support by default; either can be disabled, and XFA requires JavaScript. · pdfium.googlesource.com, 4 Oct 2026
License
The repository license grants perpetual, worldwide, no-charge, royalty-free rights to use, reproduce, modify, and distribute the work subject to its terms. · pdfium.googlesource.com, 4 Oct 2026
Platforms and architectures
The project documents builds for Windows, Mac, Linux, and Android; default CPU targets are x64 on Windows, Linux, and Mac, and arm for Android. · pdfium.googlesource.com, 4 Oct 2026
Purpose
PDFium is a C++ implementation of the PDF specification that can parse PDF content and render pages. · pdfium.googlesource.com, 4 Oct 2026
Security reporting
The project directs security bug reports to Google Bug Hunters and lets project members and embedders use Chromium's security bug template. · pdfium.googlesource.com, 4 Oct 2026
Support and community
The project lists PDFium, PDFium Reviews, and PDFium Bugs mailing lists; the reviews and bugs lists are typically read-only. · pdfium.googlesource.com, 4 Oct 2026
Test utility
The standalone pdfium_test utility can read, parse, and rasterize PDF pages into PPM or PNG images. · pdfium.googlesource.com, 4 Oct 2026
Text tools
PDFium's text module supports extracting text, identifying reading order, and searching within a page. · pdfium.googlesource.com, 4 Oct 2026

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