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LaTeX Font Warning: Font shape `OT1/cmss/m/n' in size <4> not available
LaTeX Font Warning: Size substitutions with differences

I am using the files from http://www.poirrier.be/~jean-etienne/info/latexbeamer/latex-beamer.tar.gz.

Alternatively, for a minimal working example, the presentation

\documentclass{beamer}
\begin{document}

\begin{frame}
\titlepage 
\end{frame}

\end{document}

produces the warnings.

How to remove the above 2 warnings?

E.P.
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epsilon8
  • 5,961

4 Answers4

165

Add

\usepackage{lmodern}

to your document preamble.

Fonts are typically available only in certain sizes/increments. As an example, the basic article document class loads only the following sizes (from size10.clo):

  • \tiny @ 5pt;
  • \scriptsize @ 7pt;
  • \footnotesize @ 8pt;
  • \small @ 9pt;
  • \normalsize @ 10pt;
  • \large @ 12pt;
  • \Large @ 14.4pt;
  • \LARGE @ 17.28pt;
  • \huge @ 20.74pt; and
  • \Huge @ 24.88pt

So, requesting a 15pt font size using something like

\documentclass{article}
\begin{document}
\fontsize{15}{18}\selectfont Hello world.
\end{document}

leads to LaTeX complaining in the .log file:

LaTeX Font Warning: Font shape `OT1/cmr/m/n' in size <15> not available
(Font)              size <14.4> substituted on input line 3.
...
LaTeX Font Warning: Size substitutions with differences
(Font)              up to 0.6pt have occurred.

Using lmodern removes this restriction by allowing font sizes at arbitrary sizes. For more on font size requirements, see Fonts at arbitrary sizes.

Werner
  • 603,163
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    I know this workaround, but I also know that if you do that, math accents will be typesetted very badly. You can try i.e. $\ddot u$ or $\tilde J$ – Wauzl Oct 17 '12 at 07:44
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    I used package lmodernand it worked fine until I used \scshape and no matter the size I still get the same error. Any ideas? – Evangelos Bempelis Jun 04 '14 at 14:22
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    @VagelisBebelis: Where are you using \scshape? Perhaps with a bold or italics font? They don't have small-caps included. – Werner Jun 04 '14 at 16:23
  • @Werner I use it with beamer. The small-caps show nicely but I get the warning. So, I guess I just need to change font to one that supports small-caps? – Evangelos Bempelis Jun 04 '14 at 16:55
  • With svjour class, lmodern still gives an error LaTeX Font Warning: Font shape 'U/lasy/m/n' in size <13> not available. \usepackage{anyfontsize} suggested by Dotene in another answer was what worked for me. – Alexander Gelbukh Aug 07 '17 at 05:34
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    @AlexanderGelbukh: That's because lmodern only replaces the Computer Modern font family, not all fonts. – Werner Aug 07 '17 at 17:29
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    @Werner Perhaps you could clarify this in the answer. – Alexander Gelbukh Aug 12 '17 at 08:45
  • The link at the end is broken, here is the new one: https://www.texfaq.org/FAQ-fontsize – Archange Nov 12 '20 at 17:15
  • @Wauzl I can't agree with you more The accepted answer has not solve my problem, however, after I used the package lmorden, the number of warnings increased from less than 10 to 1K+... – Axia Mar 08 '24 at 15:14
52

Add \usepackage{anyfontsize} to your preamble.

Werner
  • 603,163
Dotone
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    This is what worked for me. With lmodern suggested in the accepted answer, I stil got the warning LaTeX Font Warning: Font shape 'U/lasy/m/n' in size <13> not available. – Alexander Gelbukh Aug 07 '17 at 05:32
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    This scales all fonts, which is a reasonable fallback; but one should first fix warnings by selecting better fonts (like lmodern) where possible. – Blaisorblade Aug 29 '17 at 13:30
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    Using anyfontsize worked for me when using this thesis template https://www.latextemplates.com/template/masters-doctoral-thesis. Using lmodern did nothing (regardless of whether anyfontsize was included or not). – amc Feb 24 '22 at 19:23
15

You can add this \let\Tiny=\tiny just after the documentclass declaration. So, it should look something like this:

\documentclass{beamer}
\let\Tiny=\tiny

Hope this helps! :)

Links: [1] http://texblog.net/latex-archive/presentations/beamer-warnings/

Ashish Ranjan
  • 251
2

Beamer versions 3.44 and newer no longer produce this warning.

It was fixed in https://github.com/josephwright/beamer/commit/3bac00a7a4d95067ccb6e6aac0f0be1c9f802a1a

samcarter_is_at_topanswers.xyz
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  • Nope, installed a new version today (May 20, 2020), and it still has this warning. – mathreader May 21 '20 at 06:40
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    @mathreader Something's fishy. I never had the warning since the update, and I just tested it again (just to be sure). – campa Aug 13 '20 at 15:24