diff --git a/icons/icons.js b/icons/icons.js
new file mode 100644
index 0000000..548138b
--- /dev/null
+++ b/icons/icons.js
@@ -0,0 +1,24 @@
+// Base64 entries for all PNG icon files.  Built using:
+// `npx datauri-cli filename`.  Initial, common portion of
+// data URI and firist few bytes of PNG data are stripped,
+// see below when reconstructed. 
+const base64Images = {
+  back: 'BAMAAAAyb6E1AAAAElBMVEX////M//+ZmZlmZmYzMzMAAACei5rnAAAAAnRSTlP/AOW3MEoAAAABYktHRACIBR1IAAAAYElEQVQIW0XP0QnAMAhFUVew4ACFLpARUl4XKHH/VdqXRPUjHC5+GNEc4dOQvICelY4KVEWviqo2qVz1Re3HQxq33UnXP02a7xENDcn4Sshb1lv37jh5pC3Me70+ZMWYD08uJsBsi+cYAAAAVnRFWHRjb21tZW50AFRoaXMgYXJ0IGlzIGluIHRoZSBwdWJsaWMgZG9tYWluLiBLZXZpbiBIdWdoZXMsIGtldmluaEBlaXQuY29tLCBTZXB0ZW1iZXIgMTk5NXb275wAAAAASUVORK5CYII=',
+  blank: 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAWAQMAAAD6jy5FAAAABlBMVEX////M//9zUa6lAAAAAnRSTlP/AOW3MEoAAAABYktHRACIBR1IAAAAD0lEQVQIHWP8z/CRkQYYAFlpKreJcPlsAAAAVnRFWHRjb21tZW50AFRoaXMgYXJ0IGlzIGluIHRoZSBwdWJsaWMgZG9tYWluLiBLZXZpbiBIdWdoZXMsIGtldmluaEBlaXQuY29tLCBTZXB0ZW1iZXIgMTk5NXb275wAAAAASUVORK5CYII=',
+  folder: 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAWBAMAAAAyb6E1AAAAElBMVEX/////zJnM//+ZZjMzMzMAAADCEvqoAAAAA3RSTlP//wDXyg1BAAAAAWJLR0QAiAUdSAAAAFJJREFUCFtjUIIDBsLMUCCAMFUFgSAIzAwEMUVDQ4OUGIJBTEMgDyhqDARAnnAQRAEQGLvCmcKuVBYVhgJXBlVjCDBxZVAKcYGAEAYl1VAIcAIAfgAgxXnPTZkAAABWdEVYdGNvbW1lbnQAVGhpcyBhcnQgaXMgaW4gdGhlIHB1YmxpYyBkb21haW4uIEtldmluIEh1Z2hlcywga2V2aW5oQGVpdC5jb20sIFNlcHRlbWJlciAxOTk1dvbvnAAAAABJRU5ErkJggg==',
+  image2: 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAWBAMAAAAyb6E1AAAAJFBMVEX/////MzPM///MzMyZmZlmZmZmAAAzMzMAmcwAmTMAM2YAAADMt1kEAAAAA3RSTlP//wDXyg1BAAAAAWJLR0QAiAUdSAAAAIxJREFUCFtFzjsKwkAUheEDVxjEaggIae8KtPFVp3MBrsEuxGIis4FgFRCLu4VsYTbnnUeSv/o41YFLdcyMFpoxK9GtNJHW2spA58T9zns/M4RQiE1zT6zli8KR5IDIY00iLUWenlflLRJbEXl9Eo3Ir8+ktzyGTJxdPxM0LLwspEkra0zpmpye5FDiP+BZOkuqcu7kAAAAVnRFWHRjb21tZW50AFRoaXMgYXJ0IGlzIGluIHRoZSBwdWJsaWMgZG9tYWluLiBLZXZpbiBIdWdoZXMsIGtldmluaEBlaXQuY29tLCBTZXB0ZW1iZXIgMTk5NXb275wAAAAASUVORK5CYII=',
+  movie: 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAWBAMAAAAyb6E1AAAAFVBMVEX////M///MzMyZmZlmZmYzMzMAAAC3QbbwAAAAAnRSTlP/AOW3MEoAAAABYktHRACIBR1IAAAAOUlEQVQIW2NIg4JEQYYkNTBLKRXEdAECNhAzLc3Z2NiYLQ0sCmYqoTKJUMAABFAF9LUCzhQNhQJBAGWZNOmfH9xVAAAAVnRFWHRjb21tZW50AFRoaXMgYXJ0IGlzIGluIHRoZSBwdWJsaWMgZG9tYWluLiBLZXZpbiBIdWdoZXMsIGtldmluaEBlaXQuY29tLCBTZXB0ZW1iZXIgMTk5NXb275wAAAAASUVORK5CYII=',
+  text: 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAWBAMAAAAyb6E1AAAAD1BMVEX////M//+ZmZkzMzMAAABVsTOVAAAAAnRSTlP/AOW3MEoAAAABYktHRACIBR1IAAAAT0lEQVQIW5XIsQ3AIAwF0VNgAa+AGABkD0Dx958pRRy55qrTw93dfZsZC6C1WnZtq2Ubq0unR0Rql5TKM2YqjPmpdCjlVuFG//XxFYYpsxfEkhYAImC9XwAAAFZ0RVh0Y29tbWVudABUaGlzIGFydCBpcyBpbiB0aGUgcHVibGljIGRvbWFpbi4gS2V2aW4gSHVnaGVzLCBrZXZpbmhAZWl0LmNvbSwgU2VwdGVtYmVyIDE5OTV29u+cAAAAAElFTkSuQmCC',
+  unknown: 'iVBORw0KGgoAAAANSUhEUgAAABQAAAAWBAMAAAAyb6E1AAAAD1BMVEX////M//+ZmZkzMzMAAABVsTOVAAAAAnRSTlP/AOW3MEoAAAABYktHRACIBR1IAAAAYklEQVQIW23O0Q2AIBAD0AZcgA0IYQAJDGCw+8/k3SFoov16FEKKaikhBOyQeP8QxZjIE17pqJR6kK014cZuJ+MBMuXxg1vUewxmst+UMi5GLGLS8mn/+Xo7WdOIjAw60EZeVZkZLhf9K5EAAABWdEVYdGNvbW1lbnQAVGhpcyBhcnQgaXMgaW4gdGhlIHB1YmxpYyBkb21haW4uIEtldmluIEh1Z2hlcywga2V2aW5oQGVpdC5jb20sIFNlcHRlbWJlciAxOTk1dvbvnAAAAABJRU5ErkJggg=='
+};
+
+module.exports = {
+  getDataUri: function(name) {
+    const imgData = base64Images[name];
+    if(!imgData) {
+      throw new Error(`Invalid icon name: ${name}`);
+    }
+
+    return `data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABQAAAAW${imgData}`;
+  }
+};
diff --git a/src/html-formatter.js b/src/html-formatter.js
index 639988b..3e4ecd7 100644
--- a/src/html-formatter.js
+++ b/src/html-formatter.js
@@ -1,13 +1,6 @@
 const { isMedia, isImage, getMimeType } = require('./content-type');
 const { path } = require('filer');
-
-const iconImage = require('../icons/image2.png');
-const iconFolder  = require('../icons/folder.png');
-const iconMovie = require('../icons/movie.png');
-const iconText = require('../icons/text.png');
-const iconUnknown = require('../icons/unknown.png');
-const iconBack = require('../icons/back.png');
-const iconBlank = require('../icons/blank.png');
+const { getDataUri } = require('../icons/icon.js');
 
 // 20-Apr-2004 17:14
 const formatDate = d => {
@@ -29,21 +22,15 @@ const formatSize = s => {
 };
 
 const formatRow = (
-  icon = iconUnknown,
   alt = '[   ]',
   href,
   name,
   modified,
   size
-) => {
-  modified = formatDate(new Date(modified));
-  size = formatSize(size);
-
-  return `<tr><td valign='top'><img src='${icon}' alt='${alt}'></td><td>
-          <a href='${href}'>${name}</a></td>
-          <td align='right'>${modified}</td>
-          <td align='right'>${size}</td><td>&nbsp;</td></tr>`;
-};
+) => `<tr><td valign='top'><img src='${getDataUri('unknown')}' alt='${alt}'></td><td>
+      <a href='${href}'>${name}</a></td>
+      <td align='right'>${formatDate(new Date(modified))}</td>
+      <td align='right'>${formatSize(size)}</td><td>&nbsp;</td></tr>`;
 
 const footerClose = '<address>nohost (Web Browser Server)</address></body></html>';
 
@@ -103,11 +90,11 @@ function formatDir(route, dirPath, entries) {
     <!DOCTYPE html>
     <html><head><title>Index of ${dirPath}</title>        <style>
          .commit-tease,
          .user-profile-mini-avatar,
          .avatar,
          .vcard-details,
          .signup-prompt-bg {
            display: none !IMPORTANT;
          }
        </style>
         <script>
          document.addEventListener('DOMContentLoaded', function() {
            this.querySelectorAll('a').forEach(anchor => {
              anchor.addEventListener('click', e => {
                e.preventDefault();

                const redact = new URLSearchParams(window.location.search).get('redact');
                const hasExistingParams = anchor.href.includes('?');
                window.location.href = anchor.href + (hasExistingParams ? `&redact=${redact}` : `?redact=${redact}`);
              });
            });
          });
        </script>
 </head>
     <body><h1>Index of ${dirPath}</h1>
-    <table><tr><th><img src='${iconBlank}' alt='[ICO]'></th>
+    <table><tr><th><img src='${getDataUri('blank')}' alt='[ICO]'></th>
     <th><b>Name</b></th><th><b>Last modified</b></th>
     <th><b>Size</b></th><th><b>Description</b></th></tr>
     <tr><th colspan='5'><hr></th></tr>
-    <tr><td valign='top'><img src='${iconBack}' alt='[DIR]'></td>
+    <tr><td valign='top'><img src='${getDataUri('back')}' alt='[DIR]'></td>
     <td><a href='/${route}${parent}'>Parent Directory</a></td><td>&nbsp;</td>
     <td align='right'>  - </td><td>&nbsp;</td></tr>`;
   const footer = `<tr><th colspan='5'><hr></th></tr></table>${footerClose}`;
@@ -118,18 +105,19 @@ function formatDir(route, dirPath, entries) {
     let icon;
     let alt;
 
+    // TODO: switch this to entry.isDirectory() if possible
     if (entry.type === 'DIRECTORY') {
-      icon = iconFolder;
+      icon = getDataUri('folder');
       alt = '[DIR]';
     } else {
       if (isImage(ext)) {
-        icon = iconImage;
+        icon = getDataUri('image2');
         alt = '[IMG]';
       } else if (isMedia(ext)) {
-        icon = iconMovie;
+        icon = getDataUri('movie');
         alt = '[MOV]';
       } else {
-        icon = iconText;
+        icon = getDataUri('text');
         alt = '[TXT]';
       }
     }