Practical notes on handling PDFs and SQL without sending your files to somebody else's server.
Combining PDFs is one of the few things you can do entirely offline in a browser. Here is how it works and when to be careful about the order of pages.
PDFWhen you need images instead of a PDF — slides, thumbnails, a scanned page for a form — and why resolution matters more than most people think.
PDFWhy PDFs get big, what actually shrinks them, and the honest trade-off when the compression happens in your own browser.
SQLReading a schema out of raw DDL, checking the relationships, and getting a diagram you can drop into documentation.