# Font Manager (/examples/others/font_manager)



Load fonts at runtime and configure fallback chains, including image-based fonts.

Font manager with a FreeType source [#font-manager-with-a-freetype-source]

<LvglExampleBrief>
  Register a TTF path with the font manager and render a label with it.
</LvglExampleBrief>

`lv_font_manager_create(8)` builds a manager with an 8-slot recycling cache.
`lv_font_manager_add_src_static` maps the name `"Lato-Regular"` to
`Lato-Regular.ttf` through `lv_freetype_font_class`. `lv_font_manager_create_font`
then resolves that name at size 24 with `LV_FREETYPE_FONT_RENDER_MODE_BITMAP`,
`LV_FREETYPE_FONT_STYLE_NORMAL`, and `LV_FONT_KERNING_NONE`. The returned font
is applied as the text font of a centered label reading "Hello Font Manager!".

<LvglExample name="lv_example_font_manager_1" path="others/font_manager/lv_example_font_manager_1" />

Font fallback across multiple sources [#font-fallback-across-multiple-sources]

<LvglExampleBrief>
  Combine a TinyTTF, a FreeType emoji font, and built-in Montserrat into one fallback chain.
</LvglExampleBrief>

Up to three sources are registered with `lv_font_manager_add_src_static`:
Montserrat 14 and 32 through `lv_builtin_font_class`, `NotoColorEmoji-32.subset.ttf`
through `lv_freetype_font_class`, and `Ubuntu-Medium.ttf` through
`lv_tiny_ttf_font_class`. `lv_font_manager_create_font` asks for the comma-joined
chain `"Ubuntu-Medium,NotoColorEmoji,Montserrat"` at size 32, producing a font
that falls through each source. A centered label uses it to render ASCII text,
an emoji, and `LV_SYMBOL_OK`.

<LvglExample name="lv_example_font_manager_2" path="others/font_manager/lv_example_font_manager_2" />

Custom image font class [#custom-image-font-class]

<LvglExampleBrief>
  Register a user-defined imgfont class that only matches a size range.
</LvglExampleBrief>

The file defines an `lv_font_class_t` whose `create_cb` returns a font from
`lv_imgfont_create` only when the requested size falls between
`match_size_min` and `match_size_max` (70 to 80). That class is registered as
`"Emoji"` alongside a FreeType `"Lato-Regular"` source.
`lv_font_manager_create_font` builds the chain `"Lato-Regular,Emoji"` at size 75,
and a centered label renders `"Quiet\uF617~"` with the emoji glyph coming from
the image source.

<LvglExample name="lv_example_font_manager_3" path="others/font_manager/lv_example_font_manager_3" />