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Using Dyslexic-Friendly Fonts on Overleaf
The OpenDyslexic and OpenDyslexicAlta fonts are available on Overleaf, which you can use quickly with the fontspec package and XeLaTeX engine.
LianTze Lim (Overleaf)
Using Open XITS Fonts with XeLaTeX
The XITS fonts provide a Times-like serif typeface for mathematical and scientific publishing. They provide a version of the STIX fonts enriched with the OpenType MATH extension, making them suitable for high quality mathematical typesetting with XeTeX and LuaTeX. XITS fonts are free and open source.
Overleaf
Using the Free Linux Libertine Fonts in LaTeX
This example shows how to use the free Linux Libertine fonts on writeLaTeX. The Libertine font family provides serif fonts similar to Times New Roman.
The source code is based on The LaTeX Font Catalogue.
The LaTeX Font Catalogue
Example Hebrew Fonts
This short example shows how to use fonts available on Overleaf to write Hebrew; the list of available fonts are here.
For more examples on using the polyglossia and babel packages to typeset Hebrew (and other languages), have a look at this and this help page.
Overleaf
How to use Minion Pro Fonts with XeLaTeX
This examples shows how to get started with Adobe's Minion Pro fonts on Overleaf. The approach is simply to upload the Minion Pro OTF file(s) you need to Overleaf via the project menu, and then include them in your document using the fontspec package for XeLaTeX.
Overleaf