Tools on TheSpielplatz

Mini-tools & experiments

Little tools, fresh from the lab.

Small things I built because I needed them. Open one, use it, close the tab. Nothing to install, nothing to sign up for.

19 tools free nothing to install

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Drill the basic strategy hand by hand and get told immediately when you deviate from it. The fastest way to stop guessing at the table.

Turn a recipient, IBAN and amount into a payment code any European banking app can scan.

Type a word, blow it up, print it centred on A4. Size slider, display fonts, emoji included.

Drop in a photo, add the date and the place, download it as a polaroid.

Drag an .ics file onto the page to read the event — title, time, place — then push it into Google Calendar with one click.

Check an Austrian social security number against its official checksum before you file it.

Turn any picture into a printable paint-by-number sheet. Keeps a child busy for an afternoon.

A full-screen laser dot, mouse or feather that chases the cursor. Your cat decides if it works.

Generates a fold-and-cut paper photo frame layout, ready to print at home.

Practice questions for the A2 drone certificate, with the reasoning behind each answer.

Prototypes

Rough edges, still online because they still do something.

Bigger siblings with a home of their own. A couple of them want an account — lab itself never does.

Projects that live on GitHub. Read them, fork them, run them yourself.