diff --git a/.gitignore b/.gitignore
index 1d9c43b..c57eda4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,5 +18,4 @@
 /package-lock.json
 /deploy/
 /scripts/updateWebappTracks.sh
-/index-dev.html
 /css/.sass-cache
diff --git a/index-dev.html b/index-dev.html
deleted file mode 100644
index 2c83cb8..0000000
--- a/index-dev.html
+++ /dev/null
@@ -1,508 +0,0 @@
-<!DOCTYPE html>
-<html lang="en" class="igv-app-html">
-
-<head>
-    <meta charset="utf-8">
-    <meta http-equiv="X-UA-Compatible" content="IE=edge">
-    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
-    <meta name="description" content="">
-    <meta name="author" content="">
-    <meta http-equiv=“Pragma” content=”no-cache”>
-    <meta http-equiv=“Expires” content=”-1″>
-    <meta http-equiv=“CACHE-CONTROL” content=”NO-CACHE”>
-
-    <title>IGV</title>
-
-    <link rel="shortcut icon" href="favicon.ico" type="image/x-icon"/>
-
-    <!-- Font Awesome -->
-    <link rel="stylesheet" href="css/fontawesome/all.css">
-
-    <!-- Bootstrap 4 CSS -->
-    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.1/css/bootstrap.min.css">
-
-    <!-- DataTables CSS -->
-    <link rel="stylesheet" href="https://cdn.datatables.net/v/dt/dt-1.10.20/sl-1.3.1/datatables.min.css">
-
-    <!-- CSS -->
-    <link rel="stylesheet" href="css/app.css">
-
-    <!-- Bootstrap 4 and Dependancies -->
-    <script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>
-    <script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.1/dist/umd/popper.min.js"></script>
-    <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.1/js/bootstrap.min.js"></script>
-
-    <!-- Datatables JS -->
-    <script type="text/javascript" src="https://cdn.datatables.net/v/dt/dt-1.10.20/sl-1.3.1/datatables.min.js"></script>
-
-    <!-- Google Platform JS -->
-    <script src="https://apis.google.com/js/platform.js"></script>
-
-    <!-- Google Platform JS -->
-    <script src="https://apis.google.com/js/platform.js"></script>
-
-    <script type="text/javascript" src="./igvwebConfig-private.js"></script>
-
-    <script type="module" src="js/app.js"></script>
-
-    <!-- CSS to hide the track select menu of the jBrowse circular view -->
-    <style>
-        button[data-testid='circular_track_select'] {
-            display: none;
-        }
-    </style>
-
-</head>
-
-<body class="igv-app-body-footerized">
-
-<nav class="navbar fixed-top py-0 navbar-expand-sm navbar-dark">
-
-    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#igv-app-navbar-navigation">
-        <span class="navbar-toggler-icon"></span>
-    </button>
-
-    <div id="igv-app-navbar-navigation" class="collapse navbar-collapse">
-        <ul class="navbar-nav mr-auto">
-
-            <!-- Genome -->
-            <li class="nav-item px-3">
-                <div class="dropdown">
-
-                    <a id="igv-app-genome-dropdown-button" class="dropdown-toggle" href="#" data-toggle="dropdown">
-                        Genome
-                    </a>
-
-                    <div id="igv-app-genome-dropdown-menu" class="dropdown-menu">
-
-                        <!-- local file -->
-                        <label class="dropdown-item btn btn-default btn-file">
-                            <div class="igv-app-dropdown-item-cloud-storage">
-                                <div>
-                                    Local File ...
-                                </div>
-                                <div>
-                                    <input id="igv-app-dropdown-local-genome-file-input" type="file" name="file"
-                                           multiple style="display: none;">
-                                </div>
-                            </div>
-                        </label>
-
-                        <!-- Dropbox -->
-                        <div class="dropdown-item">
-
-                            <div id="igv-app-dropdown-dropbox-genome-file-button"
-                                 class="igv-app-dropdown-item-cloud-storage">
-
-                                <div>Dropbox</div>
-                                <div><img id="igv-app-genome-dropbox-button-image" width="18" height="18"></div>
-                                <div>...</div>
-
-                            </div>
-
-                        </div>
-
-                        <!-- Google Drive -->
-                        <div class="dropdown-item">
-                            <div id="igv-app-dropdown-google-drive-genome-file-button"
-                                 class="igv-app-dropdown-item-cloud-storage">
-                                <div>Google Drive</div>
-                                <div><img id="igv-app-genome-google-drive-button-image" width="18" height="18"></div>
-                                <div>...</div>
-                            </div>
-                        </div>
-
-                        <!-- URL -->
-                        <button class="dropdown-item" type="button" data-toggle="modal" data-target="#igv-app-genome-from-url-modal">
-                            URL ...
-                        </button>
-
-                        <div id="igv-app-genome-dropdown-divider" class="dropdown-divider"></div>
-
-                    </div>
-
-                </div>
-            </li>
-
-            <!-- Tracks -->
-            <li class="nav-item px-3">
-                <div id="igv-app-track-dropdown" class="dropdown">
-
-                    <a id="igv-track-dropdown-button" class="dropdown-toggle" href="#" data-toggle="dropdown">
-                        Tracks
-                    </a>
-
-                    <div id="igv-app-track-dropdown-menu" class="dropdown-menu">
-
-                        <!-- local file -->
-                        <label class="dropdown-item btn btn-default btn-file">
-                            <div class="igv-app-dropdown-item-cloud-storage">
-                                <div>
-                                    Local File ...
-                                </div>
-                                <div>
-                                    <input id="igv-app-dropdown-local-track-file-input" type="file" name="file" multiple
-                                           style="display: none;">
-                                </div>
-                            </div>
-                        </label>
-
-                        <!-- Dropbox -->
-                        <div class="dropdown-item">
-
-                            <div id="igv-app-dropdown-dropbox-track-file-button"
-                                 class="igv-app-dropdown-item-cloud-storage">
-
-                                <div>Dropbox</div>
-                                <div><img id="igv-app-track-dropbox-button-image" width="18" height="18"></div>
-                                <div>...</div>
-                            </div>
-                        </div>
-
-                        <!-- Google Drive -->
-                        <div class="dropdown-item">
-                            <div id="igv-app-dropdown-google-drive-track-file-button"
-                                 class="igv-app-dropdown-item-cloud-storage">
-                                <div>Google Drive</div>
-                                <div><img id="igv-app-track-google-drive-button-image" width="18" height="18"></div>
-                                <div>...</div>
-                            </div>
-                        </div>
-
-                        <!-- URL -->
-                        <button class="dropdown-item" type="button" data-toggle="modal"
-                                data-target="#igv-app-track-from-url-modal">
-                            URL ...
-                        </button>
-
-                        <div id="igv-app-annotations-section" class="dropdown-divider">
-                        </div>
-
-                    </div>
-                </div>
-            </li>
-
-            <!-- Session -->
-            <li class="nav-item px-3">
-                <div class="dropdown">
-
-                    <a id="igv-app-session-dropdown-button" class="dropdown-toggle" href="#" data-toggle="dropdown">
-                        Session
-                    </a>
-
-                    <div id="igv-session-dropdown-menu" class="dropdown-menu">
-
-                        <!-- Load local session file -->
-                        <label class="dropdown-item btn btn-default btn-file">
-                            <div class="igv-app-dropdown-item-cloud-storage">
-                                <div>
-                                    Local File ...
-                                </div>
-                                <div>
-                                    <input id="igv-app-dropdown-local-session-file-input" type="file" name="file" style="display: none;">
-                                </div>
-                            </div>
-                        </label>
-
-                        <!-- Dropbox -->
-
-                        <!-- Google Drive -->
-
-                        <!-- Session URL -->
-                        <button class="dropdown-item" type="button" data-toggle="modal"
-                                data-target="#igv-app-session-url-modal">
-                            Load URL ...
-                        </button>
-
-                        <!-- Session List -->
-                        <div id="igv-session-list-divider" class="dropdown-divider"></div>
-
-                        <div class="dropdown-divider"></div>
-
-                        <!-- Save local session file -->
-                        <button class="dropdown-item" type="button" data-toggle="modal"
-                                data-target="#igv-app-session-save-modal">
-                            Save ...
-                        </button>
-
-                    </div>
-
-                </div>
-            </li>
-
-            <!-- Share (generate URL) -->
-            <li class="nav-item px-3">
-                <div>
-                    <a id="igv-app-share-button" href="#" data-toggle="modal" data-target="#igv-app-share-modal">
-                        Share
-                    </a>
-                </div>
-            </li>
-
-            <!-- Bookmark -->
-            <li class="nav-item px-3">
-                <div>
-                    <a id="igv-app-bookmark-button" href="#">
-                        Bookmark
-                    </a>
-                </div>
-            </li>
-
-            <!-- Save SVG -->
-            <li class="nav-item px-3">
-                <div>
-                    <a id="igv-app-save-svg-button" href="#" data-toggle="modal" data-target="#igv-app-svg-save-modal">
-                        Save SVG
-                    </a>
-                </div>
-            </li>
-
-            <!-- Circular View -->
-            <li id="igv-app-circular-view-nav-item" class="nav-item px-3" style="display: none;">
-                <div id="igv-app-circular-view-dropdown" class="dropdown">
-
-                    <a id="igv-app-circular-view-dropdown-button" class="dropdown-toggle" href="#" data-toggle="dropdown">Circular View</a>
-
-                    <div id="igv-app-circular-view-dropdown-menu" class="dropdown-menu">
-
-                        <button id="igv-app-circular-view-presentation-button" class="dropdown-item" type="button">
-                            Show
-                        </button>
-
-                        <button id="igv-app-circular-view-clear-chords-button" class="dropdown-item" type="button" disabled>
-                            Clear All
-                        </button>
-
-                        <button id="igv-app-circular-view-resize-button" class="dropdown-item" type="button" disabled data-toggle="modal" data-target="#igv-app-circular-view-resize-modal">
-                            Resize
-                        </button>
-
-                        <a id="igv-app-circular-view-example-button" class="dropdown-item" type="button" href="https://github.com/igvteam/igv-webapp/wiki/Circular-View" target="_blank">Documentation</a>
-
-                    </div>
-
-                </div>
-            </li>
-
-            <!-- Help Menu -->
-            <li class="nav-item px-3">
-                <div id="igv-app-help-dropdown" class="dropdown">
-
-                    <a id="igv-app-help-button" class="dropdown-toggle" href="#" data-toggle="dropdown">
-                        Help
-                    </a>
-
-                    <div class="dropdown-menu">
-                        <a class="dropdown-item" href="https://igvteam.github.io/igv-webapp/" target="_blank">Documentation</a>
-                        <a class="dropdown-item" href="https://github.com/igvteam/igv-webapp" target="_blank">GitHub
-                            Repository</a>
-                        <a class="dropdown-item" href="https://groups.google.com/group/igv-help" target="_blank">User
-                            Forum</a>
-                        <a class="dropdown-item" href="#" data-toggle="modal" data-target="#igv-app-help-about-modal">About
-                            IGV-Web</a>
-                    </div>
-                </div>
-            </li>
-
-        </ul>
-
-        <!-- Google Authentication -->
-        <div class="btn-group">
-            <div class="btn-group dropleft" role="group">
-
-                <div id="igv-google-drive-dropdown" class="dropdown">
-
-                    <button id="igv-google-drive-dropdown-toggle" type="button" class="btn dropdown-toggle" data-toggle="dropdown" style="display: none;">
-                        <img src="img/google-drive-current.png" width="24" height="24">
-                    </button>
-
-                    <div class="dropdown-menu">
-                        <button id="igv-google-drive-sign-out-button" class="dropdown-item" type="button">Sign out</button>
-                        <!--                        <button class="dropdown-item" type="button">Unused</button>-->
-                        <!--                        <button class="dropdown-item" type="button">Unused</button>-->
-                    </div>
-                </div>
-
-            </div>
-        </div>
-
-    </div>
-
-</nav>
-
-<main id="igv-main" role="main" class="container-fluid">
-
-    <!-- JBrowser Circular Viewer Container -->
-    <div id="igv-circular-view-container" style="position: absolute; top:200px; left:20px; width: fit-content; height: fit-content;z-index: 2048"></div>
-
-    <!-- App container -->
-    <div class="row">
-        <div class="col-sm">
-            <div id="igv-app-container">
-            </div>
-        </div>
-    </div>
-
-    <!-- Share URL Modal -->
-    <div id="igv-app-share-modal" class="modal fade">
-
-        <div class="modal-dialog">
-
-            <div class="modal-content">
-
-                <div class="modal-header">
-                    <div id="igv-app-share-input-modal-close-button" class="modal-title">Share</div>
-
-                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
-                        <span aria-hidden="true">&times;</span>
-                    </button>
-
-                </div>
-
-                <div class="modal-body">
-                    <div class="container-fluid">
-
-                        <!-- copy url -->
-                        <div class="row">
-                            <div class="col-sm-8">
-                                <div class="form-group">
-                                    <input id="igv-app-share-input" type="text" class="form-control" placeholder="">
-                                </div>
-                            </div>
-                            <div class="col-sm-2">
-                                <button id="igv-app-copy-link-button" type="button" class="btn btn-sm btn-default">
-                                    COPY
-                                </button>
-                            </div>
-                        </div>
-
-                        <!-- social buttons -->
-                        <div class="igv-app-social-button-container">
-
-                            <div>
-                                <a id="igv-app-email-button" href="mailto:?body=https://aidenlab.org/juicebox">EMAIL</a>
-                            </div>
-
-                            <div id="igv-app-embed-button">EMBED</div>
-
-                            <div id="igv-app-qrcode-button">QR CODE</div>
-
-                        </div>
-
-                        <!-- qr code image -->
-                        <div class="row justify-content-center">
-                            <div id="igv-app-qrcode-image" class="col-4"></div>
-                        </div>
-
-                        <!-- embed widget -->
-                        <div id="igv-app-embed-container" class="row">
-                            <div class="col-sm-9 form-group">
-                                <textarea class="form-control" rows="4"></textarea>
-                            </div>
-                            <div class="col-sm-3">
-                                <button type="button" class="btn btn-default">COPY</button>
-                            </div>
-                        </div>
-
-                    </div>
-                </div>
-
-            </div>
-
-        </div>
-
-    </div>
-
-    <!-- SVG save -->
-    <div id="igv-app-svg-save-modal" class="modal fade igv-app-file-save-modal">
-
-        <div class="modal-dialog modal-lg">
-
-            <div class="modal-content">
-
-                <div class="modal-header">
-
-                    <div id="igv-app-svg-save-modal-label" class="modal-title">
-                        <div>
-                            Save SVG File
-                        </div>
-                    </div>
-
-                    <button type="button" class="close" data-dismiss="modal">
-                        <span aria-hidden="true">&times;</span>
-                    </button>
-                </div>
-
-                <div class="modal-body">
-                    <input class="form-control" type="text" placeholder="igv-app.svg">
-
-                    <div>
-                        Enter filename with .svg suffix
-                    </div>
-
-                </div>
-
-                <div class="modal-footer">
-                    <button type="button" class="btn btn-sm btn-outline-secondary" data-dismiss="modal">Cancel</button>
-                    <button type="button" class="btn btn-sm btn-secondary">OK</button>
-                </div>
-
-            </div>
-
-        </div>
-
-    </div>
-
-    <!-- Help - About - Modal -->
-    <div id="igv-app-help-about-modal" class="modal fade" tabindex="-1">
-        <div class="modal-dialog">
-            <div class="modal-content">
-                <div class="modal-header">
-                    <h5 class="modal-title">About IGV-Web</h5>
-                    <button type="button" class="close" data-dismiss="modal" aria-label="Close">
-                        <span aria-hidden="true">&times;</span>
-                    </button>
-                </div>
-                <div class="modal-body">
-                    <div id="igv-app-version"></div>
-                    <div id="igv-igvjs-version"></div>
-                </div>
-                <div class="modal-footer">
-                    <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
-                </div>
-            </div>
-        </div>
-    </div>
-
-</main>
-
-<footer class="igv-app-footer">
-
-    <div>
-        <a href="https://igv.org" target="_blank">
-            <img src="img/igv-logo-cooked-40x40.png" width="32" height="32">&nbsp;&nbsp;igv.org
-        </a>
-    </div>
-
-    <div id="igv-version-label">
-    </div>
-
-    <div>
-        <div id="igv-app-ucsd-logo">
-            <a href="https://ucsd.edu/" target="_blank" title="University of California at San Diego">
-                <img src="img/ucsd-logo.svg" width="123" height="24" alt="University of California at San Diego">
-            </a>
-        </div>
-        <div id="igv-app-broad-logo">
-            <a href="https://www.broadinstitute.org" target="_blank" title="Broad Institute home page">
-                <img src="https://igv.org/app/img/broad-institute-logo.svg" width="95" height="24"
-                     alt="Broad Institute logo">
-            </a>
-        </div>
-    </div>
-
-</footer>
-
-</body>
-
-</html>
diff --git a/js/app.js b/js/app.js
index 0f8e4b1..a25c996 100644
--- a/js/app.js
+++ b/js/app.js
@@ -48,6 +48,7 @@ import {createSaveImageWidget} from './saveImageWidget.js'
 import GtexUtils from "./gtexUtils.js"
 import version from "./version.js"
 import {createCircularViewResizeModal} from "./circularViewResizeModal.js"
+import {convertToHubURL} from "./ucscUtils.js"
 
 document.addEventListener("DOMContentLoaded", async (event) => await main(document.getElementById('igv-app-container'), igvwebConfig))
 
@@ -101,9 +102,16 @@ async function main(container, config) {
     if (config.restoreLastGenome) {
         try {
             const lastGenomeId = localStorage.getItem("genomeID")
-            if (lastGenomeId && lastGenomeId !== igvConfig.genome && config.genomes.find(elem => elem.id === lastGenomeId)) {
-                igvConfig.genome = lastGenomeId
-                igvConfig.tracks = []
+            if (lastGenomeId && lastGenomeId !== igvConfig.genome) {
+                if (config.genomes.find(elem => elem.id === lastGenomeId)) {
+                    igvConfig.genome = lastGenomeId
+                    igvConfig.tracks = []
+                } else if((lastGenomeId.startsWith("GCA_") || lastGenomeId.startsWith("GCF_")) && lastGenomeId.length >= 13) {
+                    const hubURL = convertToHubURL(lastGenomeId)
+                    igvConfig.genome = {
+                        hubURL: hubURL
+                    }
+                }
             }
         } catch (e) {
             console.error(e)
diff --git a/js/ucscUtils.js b/js/ucscUtils.js
new file mode 100644
index 0000000..2b64dc1
--- /dev/null
+++ b/js/ucscUtils.js
@@ -0,0 +1,17 @@
+
+
+function convertToHubURL(accension) {
+    //https://hgdownload.soe.ucsc.edu/hubs/GCF/016/808/095/GCF_016808095.1/
+    //https://hgdownload.soe.ucsc.edu/hubs/GCA/028/534/965/GCA_028534965.1/
+    if (accension.startsWith("GCF") || accension.startsWith("GCA") && accension.length >= 13) {
+        const prefix = accension.substring(0, 3);
+        const n1 = accension.substring(4, 7);
+        const n2 = accension.substring(7, 10);
+        const n3 = accension.substring(10, 13);
+        return "https://hgdownload.soe.ucsc.edu/hubs/" + prefix + "/" + n1 + "/" + n2 + "/" + n3 + "/" + accension + "/hub.txt";
+    } else {
+        return undefined;
+    }
+}
+
+export {convertToHubURL}
\ No newline at end of file
