Contour Labeler
Plugin ID: 6523
Place slope-aligned elevation labels on contours along guide lines drawn uphill.
Draw a guide line uphill across your contours and get elevation labels placed at every crossing. The text baseline follows the contour and the top of the text points uphill, regardless of the direction the contour was digitised in. Each guide can be undone, and the label font and halo are set with the standard QGIS text format panel. The interface is in English with a Swedish translation. Works on Windows, Linux and macOS with plain QGIS 3.34 or later (including QGIS 4); no external dependencies. Labels are written to a temporary layer that you export to a permanent format.