File Converter
Change image formats, combine or split PDFs, and move between CSV and JSON without uploading your files to a server.
- Images, PDFs, CSV, and JSON
- Runs locally in your browser
Small tools that do one job well.
No account, no subscription, and no detour through a sales form. Open a tool and get the task done.
Use them directly in your browser.
Files stay on your device while you work. The quiz builder stores its working data locally unless you choose to export it.
Hot Swap Quiz
Build a quiz, replace questions while you study, and reuse the same deck as flashcards without creating an account.
- Quiz and flashcard modes
- Import, edit, and export decks
These tools are free to use. They are practical side projects, not a substitute for professional diagnosis when a device, account, or network may be compromised.