About these guides

PoppyOS is a small publisher of offline data tools. The guides on this site are written to answer questions people actually search for, such as "compare two csv files for differences" or "csv file leading zeros". The questions were chosen from public question-and-answer sites and search suggestions; the evidence is kept in the project repository.

• Written with AI assistance. The guides and the products' engines were produced with AI-assisted tools, then checked by running the code. Every code example is executed by an automated test on every build, and the output shown under it is compared with the real output.
• Honest limits. Where we have not tested something (for instance a particular Excel version), the guide says so.
• Commercial interest. We sell the tools on this site. Each guide ends with a disclosure, and the free methods in it work without buying anything.
• Corrections. If you find a mistake, write to poppyos.support@gmail.com.