The NativeOffice blog
Practical guides to PDFs, spreadsheets and pandas, plus the engineering decisions behind a native office suite.
How to Convert Excel to JSON Without Writing a Script
Turn a spreadsheet into clean JSON without Python or an online converter. How nested structures, dates and number types are handled, and how to avoid the common output shape mistakes.
How to Remove Duplicates in Excel Without Deleting Rows You Meant to Keep
Remove duplicate rows in Excel correctly, including the blank row trap that silently deletes real data, case sensitivity, and how to review duplicates before deleting anything.
How to Open DOCX, XLSX and PPTX Files Without Microsoft Office
Open and edit Word, Excel and PowerPoint files without a Microsoft 365 subscription. Free options for Windows, macOS and Linux, and what actually breaks in each.
How to Merge PDF Files Offline, Without Uploading Them to a Website
Combine multiple PDFs into one file on your own computer, with no upload, no file size cap and no watermark. Step by step for Windows, macOS and Linux.
How to Convert a PDF to Word Without Uploading It Anywhere
Convert a PDF into an editable Word document entirely on your own machine. No upload, no account, no watermark. Offline methods for Windows, macOS and Linux compared.
Best Privacy-First Office Suite in 2026
Most office suites today are built cloud-first, which means your documents are processed on someone else's server before you ever see them rendered on your screen. NativeOffice…
The Lowest Size Office Suite in 2026
Install size is one of the most overlooked specs in office software, mostly because vendors rarely lead with it. It matters more than it gets credit for: a smaller install…
How to Password Protect a PDF File
A PDF can be protected in two distinct ways: with an open password that prevents the file from being viewed without the correct password, or with a permissions password that…
How to Reduce PDF File Size Without Losing Quality
Large PDF files are usually caused by one of three things: uncompressed images, embedded fonts, or redundant metadata and unused objects left over from editing. Reducing file size…
Why We Chose C++ Over Electron
When we started building NativeOffice, the first and most consequential decision we made was the choice of language. Most modern office software and productivity tools are built…