Felix' Workshop

Draw pixel art and save it as SVG.

See and remove hidden data in photos, like GPS location.

Write music for the NES sound chip and save it as WAV.

Split a sound into sine waves and rebuild it.

Overlap coloured shapes and see how their colours mix.

Tap morse code on the space bar and see it decoded.

Test how fast you send morse code.

Turn a photo of a face into a black and white image.

Draw an SVG with a chain of rotating circles.

Merge, split, reorder, rotate and redact PDF pages.

Print bingo cards from your own list of words.

Turn a GPX file or map link into a printable route.

Generate random numbers from 11 distributions.

Count the alphabet swaps that put a word in alphabetical order.

Build and train a small neural network.

Compare how objects and functions organise the same code.

Count in any base from 2 to 16.

See the sky for any place and time.

Plan where to watch a total solar eclipse.

Count down to the next solar eclipse at your location.

See what your browser reveals to every website.