removing : from the name of the figure latex (Fig. 4.2: to Fig. 4.2 )

Question

I tried to remove : from the name of figures and tables but unfortunately, it doesn't work. I'm using the caption package.

begin{figure}[H]

\hspace*{-1cm}
        \centering
        \includegraphics[scale=0.2]{Images/w9.jpg}
        \caption{Architecture of IoT-Blockchain}
        \label{fig:w5}
    \end{figure}

Answer 1

You can use the labelsep=... option of the caption package to replace the colon with a space:

\documentclass{book}

\usepackage[labelsep=space]{caption}
\usepackage{graphicx}
\usepackage{float}

\begin{document}

\chapter{title}

\section{title}

\begin{figure}[htbp]
\centering
\includegraphics{example-image-duck}
\caption{Architecture of IoT-Blockchain}
\label{fig:w5}
\end{figure}


\end{document}