Sample OTF font for testing renderers and loaders — free, CC0

OpenType with CFF outlines is the other half of the font question: many loaders handle TrueType and quietly fail on CFF, or accept the file and render nothing.

otf/loremfile-sans.otf is "Loremfile Sans" in that form — 95 printable ASCII glyphs, each drawn as a rectangle whose width is computed from the character's codepoint. The family is generated rather than derived from any existing typeface, so there is no licence to read and nothing to attribute: it is CC0 like everything else here.

Rectangles are a deliberate choice. They make the metrics obvious to the eye — you can see at a glance whether a renderer is applying widths correctly — and they keep the file small enough to embed in a test suite.

Use it to test font loading, @font-face handling, metrics extraction, subsetting and conversion. The same family is published in three other wrappers: TTF, WOFF and WOFF2.

curl -O https://loremfile.dev/otf/loremfile-sans.otf

<a href="https://loremfile.dev/otf/loremfile-sans.otf">download</a>