OTLFiddle is like JSFiddle, but for fonts: it's a playground for your OpenType feature code. Drag and drop a font at the top, type in your feature code, and you can see the resulting font on the right hand side.
OTLFiddle doesn't require a font editor, but it does require you to have
the Python fontTools library installed. Try one of these commands if
you don't already have it:
% sudo pip install fontTools
% sudo easy_install fontTools
% sudo apt install fonttools-python
- New feature editor
- Add zoom in and zoom out controls
- Manual compilation mode
- Detects Python 2 as well as Python 3