Mathematics, Teaching
- Tree builder Online tool for drawing a conditional probability tree
Games
- Sudoku, grids and solver
Physics
Earth's atmosphere
Air humidity
- Dew point calculator as a function of air temperature and relative humidity and the frosting point if the air temperature is below 0°C.
Music: Frequencies of the Equal-Tempered Scale
Image processing
For drawing or painting
- Placing a grid on an image with squares and receive an image
- Placing a grid on an image and receive a PDF of one or more pages
- Divide an image into equal rectangles and receive an image
Image to PDF
- To cut an image into equal rectangles, thus enlarging the image :
- Convert an image into a multipage PDF to obtain a given width or height :
Convert an image containing a scale indicator into a multipage PDF to obtain actual dimensions :
