Tutorials, deep-dives, and privacy-first thinking about developer tools.
Showing 1–6 of 6 posts
Privacy-first CSV conversion explained: what really happens when you upload a customer list to an online converter, and how to verify a tool is client-side.
CSV vs JSON is not a style preference. One is an untyped flat grid, the other is typed and nested. Here is how to choose, and what breaks either way.
CSV files carry no types, so every parser guesses. Here is when a numeric-looking field should stay a string, and how to stop silent data loss.
Semicolon CSV files aren't broken exports. They come from Excel's locale list separator. Here's why it happens and how to read the files anywhere.
Excel to JSON does not require uploading your spreadsheet anywhere. Here is the browser-only workflow, plus the date and precision traps that corrupt data.
How CSV to JSON conversion really works in 2026 — RFC 4180 quoting rules, delimiter detection, BOM and encoding traps, and safe type inference.