: Many academic publishers and manuscript submission systems (like ManuscriptCentral) explicitly reject documents containing Type 3 fonts because they cause printing and rendering errors. TeX - LaTeX Stack Exchange Why They Appear (and How to Remove Them)
Install the cm-super package to provide vector (Type 1) versions of the standard Computer Modern fonts, which prevents the system from defaulting to T3 bitmaps. Modern Alternatives for Download t3 font exclusive download
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