How to Define a Custom Beamer Frame Command

If you want a shorthand for starting frames, define a command that expands to \begin{frame} and its title. End each frame with the literal \end{frame}. This works with the Beamer class and with article plus the beamerarticle package.

Beamer has special handling for frame contents, so a custom environment that wraps both the beginning and end of a frame can fail: Beamer looks for the literal \end{frame} while collecting the frame body. A start command avoids replacing that end marker.

Define a frame-start command

Here is a minimal example. The first two lines select presentation mode. To make an article version, replace them with the alternative lines shown in the comments.

\documentclass{beamer}
% For article mode, use these two lines instead:
% \documentclass{article}
% \usepackage{beamerarticle}

\newcommand{\startframe}[2][]{%
  \begin{frame}[#1]{#2}%
}

\begin{document}

\startframe{A short example}
This content appears inside the frame.
\end{frame}

\startframe[fragile]{A frame with verbatim content}
\begin{verbatim}
Some verbatim text
\end{verbatim}
\end{frame}

\end{document}

The command takes two arguments. The optional first argument is the frame option list, and the required second argument is the frame title. For example, \startframe[fragile]{Code} begins a fragile frame. If you do not need frame options, a simpler definition is enough:

\newcommand{\startframe}[1]{\begin{frame}{#1}}

With that definition, write \startframe{Title}, put the frame contents next, and finish with \end{frame}.

Using beamerarticle

For an article-style build, use \documentclass{article} and load \usepackage{beamerarticle} instead of using the Beamer class. Keep the same frame-start command and frame source. The package provides article-mode behavior for Beamer commands, so you can maintain a shared source for slides and an article-style output.

The example uses \startframe only as a command name; you can choose another name that does not conflict with an existing command. Do not load beamerarticle in a document whose class is beamer: choose one document class for each build.

Why not define a wrapper environment?

A tempting alternative is to define a custom environment whose begin code runs \begin{frame} and whose end code runs \end{frame}. Beamer’s frame environment processes its body specially and searches for the frame-ending marker. Hiding that marker behind an outer environment can interfere with this processing, particularly when the frame has special options such as fragile.

A start command is intentionally asymmetric: it abbreviates the start but leaves Beamer’s expected closing marker in the document. If you need to standardize more than the title—for example, a recurring option—put that option in the command’s definition and still close the frame with \end{frame}.

Common mistakes

• Using \end{startframe}: The command is not an environment, so the correct closing line remains \end{frame}.
• Omitting the required title argument: With the two-argument definition, write \startframe{Title} or \startframe[option]{Title}.
• Putting verbatim material in an ordinary frame: Use the fragile option when the frame contains verbatim text or code that requires verbatim processing.
• Loading the wrong class combination: Use either beamer as the document class, or article with beamerarticle; do not combine the two approaches in one build.