Compare Apache POI vs docx4j vs OpenXML SDK: Which One Should You Use?
Last Updated: 09 Mar, 2026
Choosing the right library for Microsoft Office document manipulation can feel like navigating a maze. Whether you are building a high-volume reporting engine or a simple data exporter, the tool you choose will dictate your project’s performance, scalability, and maintainability.
In this blog post, we’ll break down the “Big Three”—Apache POI, docx4j, and OpenXML SDK—to help you decide which is the best fit for your 2026 development roadmap.
Best Free Tools & Libraries to Convert PowerPoint to PDF, Images & HTML
Last Updated: 27 Oct, 2025
PowerPoint Presentations are everywhere in our professional and academic lives, but sometimes we need them in different formats. Maybe you want to preserve your slides as a PDF for easy sharing, extract images for a website, or convert an entire presentation to HTML for online viewing. Whatever your reason, you’re probably wondering what the best free options are for making these conversions happen.
Our team has spent considerable time testing various tools and libraries to help you find the most reliable, free solutions for converting PowerPoint (PPT, PPTX)files.