Reviewing changes in HTML timetables

When an agency releases an updated GTFS file, it can be useful to review what has changed when generating HTML timetables. Use diff2html to easily compare two folders of html timetables.

First generate two folders of gtfs-to-html output to compare. To make it easy to see what has changed, set the beautify option to true in the config file for both sets of output.

Then, install diff2html:

npm install -g diff2html-cli

Use the diff command and pipe the output to diff2html to get a nicely formatted list of the differences between two folders of html files.

diff -bur html/folder1 html/folder2 |  diff2html -i stdin