diff --git a/README.md b/README.md
index 991732c..60c0972 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-<img alt="My Logo" class="logo header-image only-light align-center" src="graphics/LiftOn_color.png" style="width:90%">
+<img alt="My Logo" class="logo header-image only-light align-center" src="https://storage.googleapis.com/storage.khchao.com/figures/LiftOn/LiftOn_color.png" style="width:90%">
 
 <div class="content">
 <a class="reference external image-reference" href="https://img.shields.io/badge/License-GPLv3-yellow.svg"><img alt="https://img.shields.io/badge/License-GPLv3-yellow.svg" src="https://img.shields.io/badge/License-GPLv3-yellow.svg"></a>
@@ -42,9 +42,8 @@ The latest T2T-CHM13 annotation generated by LiftOn is available as <a href="htt
 <p>Let's first define the problem:
 Given a reference <strong>Genome</strong> <span class="math notranslate nohighlight"><mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" tabindex="0" ctxtmenu_counter="0" style="font-size: 118.9%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-mi class="mjx-i"><mjx-c class="mjx-c1D445 TEX-I"></mjx-c></mjx-mi></mjx-math><mjx-assistive-mml unselectable="on" display="inline"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>R</mi></math></mjx-assistive-mml></mjx-container></span>, an <strong>Annotation</strong> <span class="math notranslate nohighlight"><mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" tabindex="0" ctxtmenu_counter="1" style="font-size: 118.9%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-msub><mjx-mi class="mjx-i"><mjx-c class="mjx-c1D445 TEX-I"></mjx-c></mjx-mi><mjx-script style="vertical-align: -0.153em;"><mjx-mi class="mjx-i" size="s"><mjx-c class="mjx-c1D434 TEX-I"></mjx-c></mjx-mi></mjx-script></mjx-msub></mjx-math><mjx-assistive-mml unselectable="on" display="inline"><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>R</mi><mi>A</mi></msub></math></mjx-assistive-mml></mjx-container></span>, and a target <strong>Genome</strong> <span class="math notranslate nohighlight"><mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" tabindex="0" ctxtmenu_counter="2" style="font-size: 118.9%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-mi class="mjx-i"><mjx-c class="mjx-c1D447 TEX-I"></mjx-c></mjx-mi></mjx-math><mjx-assistive-mml unselectable="on" display="inline"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>T</mi></math></mjx-assistive-mml></mjx-container></span>. The lift-over problem is defined as the process of changing the coordinates of <strong>Annotation</strong> <span class="math notranslate nohighlight"><mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" tabindex="0" ctxtmenu_counter="3" style="font-size: 118.9%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-msub><mjx-mi class="mjx-i"><mjx-c class="mjx-c1D445 TEX-I"></mjx-c></mjx-mi><mjx-script style="vertical-align: -0.153em;"><mjx-mi class="mjx-i" size="s"><mjx-c class="mjx-c1D434 TEX-I"></mjx-c></mjx-mi></mjx-script></mjx-msub></mjx-math><mjx-assistive-mml unselectable="on" display="inline"><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>R</mi><mi>A</mi></msub></math></mjx-assistive-mml></mjx-container></span> from <strong>Genome</strong> <span class="math notranslate nohighlight"><mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" tabindex="0" ctxtmenu_counter="4" style="font-size: 118.9%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-mi class="mjx-i"><mjx-c class="mjx-c1D445 TEX-I"></mjx-c></mjx-mi></mjx-math><mjx-assistive-mml unselectable="on" display="inline"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>R</mi></math></mjx-assistive-mml></mjx-container></span> to <strong>Genome</strong> <span class="math notranslate nohighlight"><mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" tabindex="0" ctxtmenu_counter="5" style="font-size: 118.9%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-mi class="mjx-i"><mjx-c class="mjx-c1D447 TEX-I"></mjx-c></mjx-mi></mjx-math><mjx-assistive-mml unselectable="on" display="inline"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>T</mi></math></mjx-assistive-mml></mjx-container></span>, and generate a new annotation file <strong>Annotation</strong> <span class="math notranslate nohighlight"><mjx-container class="MathJax CtxtMenu_Attached_0" jax="CHTML" tabindex="0" ctxtmenu_counter="6" style="font-size: 118.9%; position: relative;"><mjx-math class="MJX-TEX" aria-hidden="true"><mjx-msub><mjx-mi class="mjx-i"><mjx-c class="mjx-c1D447 TEX-I"></mjx-c></mjx-mi><mjx-script style="vertical-align: -0.153em; margin-left: -0.12em;"><mjx-mi class="mjx-i" size="s"><mjx-c class="mjx-c1D434 TEX-I"></mjx-c></mjx-mi></mjx-script></mjx-msub></mjx-math><mjx-assistive-mml unselectable="on" display="inline"><math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>T</mi><mi>A</mi></msub></math></mjx-assistive-mml></mjx-container></span>. A simple illustration of the lift-over problem is shown in <a class="reference internal" href="#liftover-illustration"><span class="std std-numref">Figure 1</span></a>.</p>
 <figure class="align-center" id="id4">
-<span id="liftover-illustration"></span><img alt="_images/liftover_illustration.gif" src="_images/liftover_illustration.gif">
 <figcaption>
-<span id="liftover-illustration"></span><a class="reference internal image-reference" href="graphics/liftover_illustration.gif"><img alt="graphics/liftover_illustration.gif" src="graphics/liftover_illustration.gif" style="width: 672.5px; height: 270.0px;"></a>
+<span id="liftover-illustration"></span><a class="reference internal image-reference" href="https://storage.googleapis.com/storage.khchao.com/figures/LiftOn/liftover_illustration.gif"><img alt="graphics/liftover_illustration.gif" src="https://storage.googleapis.com/storage.khchao.com/figures/LiftOn/liftover_illustration.gif" style="width: 672.5px; height: 270.0px;"></a>
 </figcaption>
 </figure>
 <div class="line-block">
@@ -208,4 +207,4 @@ Kuan-Hao Chao*, Mihaela Pertea, Steven L Salzberg*, "LiftOn: a tool to improve a
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 <br>
 
-<img alt="My Logo" class="logo header-image only-light align-center" src="graphics/jhu-logo-dark.png">
+<img alt="My Logo" class="logo header-image only-light align-center" src="https://storage.googleapis.com/storage.khchao.com/figures/jhu-logo-dark.png">