# How to change the font size of title? [duplicate]

As shown from figure my thesis title. I want to increase or decrease the size to adjust the title in two or three rows. I have tried by putting \Huge, \Large, \tiny and many more command but no change occurs. please give me any good suggestion? The tex file also sent.

\begin{document}

\title{\vspace{-2in} \textbf{Development of a Pulsed Laser Deposition System and the Growth of Fluoride Thin Film}}

\author{
By\\
\Large
\vspace{-0.1in}\textbf{Maisum Ali}\\
\small
\vspace{+0.4in}\textbf{(PPHF13E020)}\\
\vspace{-0.4cm}\textsc{A thesis submitted in the partial fulfillment} \\
\vspace{-0.4cm}\textsc{of the requirement for the degree of}\\
\vspace{-0.4cm}\textsc{Master of Philosophy}\\
\vspace{+0.3in}\textsc{in Physics.}\\
Supervised by\\
\vspace{+0.3in}\textbf{Dr. Muhammad Anwar-ul-Haq}\\
\vspace{+0.3in}\includegraphics[scale=0.67]{UoSlogo}\\
\vspace{-0.4cm}\textsc{Department of Physics}\\
\vspace{-0.4cm}\textsc{University of Sargodha}\\
\vspace{-0.4cm}\textsc{Sargodha, Pakistan}
}
\date{\textbf{2016}}

\maketitle

• Welcome, here is my standard link when it comes to titlepages: How to customize my titlepage? – Johannes_B Aug 17 '16 at 5:07
• Write \large etc inside \title. – Johannes_B Aug 17 '16 at 5:11
• All this manual spacing ... Done on purpose? The output is very very very .... strange. – Johannes_B Aug 17 '16 at 5:12
• Which document class do you use? What are the dimensions (height, width) of the textblock? – Mico Aug 17 '16 at 5:29
• Ah, double line spacing. Always bad on a titlepage. – Johannes_B Aug 17 '16 at 5:41