diff --git a/README.md b/README.md
index 0d91e12..98cef37 100644
--- a/README.md
+++ b/README.md
@@ -43,15 +43,6 @@ cd latex2image-web/
 npm install
 ```
 
-### (Optional) Global Node.js packages for non-SVG image export
-
-SVG files can be generated as-is, but for PNG and JPG export support, the two global Node.js packages [svgexport](https://www.npmjs.com/package/svgexport) and [imagemin-cli](https://www.npmjs.com/package/imagemin-cli) are required:
-
-```
-npm install svgexport -g
-npm install imagemin-cli -g
-```
-
 ## Usage
 
 To run:
@@ -74,12 +65,12 @@ Additionally, the compilation process will be killed after 5 seconds if not comp
 
 ## Internals
 
-Commands used:
+### Commands used:
 
 * `latex` - Converts `.tex` source file to `.dvi` intermediate
 * `dvisvgm` - Converts `.dvi` file to `.svg` vector image
-* `svgexport` - Converts `.svg` to `.png` or `.jpg` raster images
-* `imagemin` - Compresses `.png` and `.jpg` images
+
+We use [sharp](https://www.npmjs.com/package/sharp) to convert the SVG file to PNG and JPG images where required.
 
 ## Notes
 
diff --git a/app.js b/app.js
index 3c7ff1b..68670b0 100644
--- a/app.js
+++ b/app.js
@@ -1,6 +1,11 @@
 const fs = require('fs');
+const fsPromises = fs.promises;
 const shell = require('shelljs');
 const express = require('express');
+const promiseRouter = require('express-promise-router');
+const queue = require('express-queue');
+const sharp = require('sharp');
+const Promise = require('bluebird');
 
 const port = 3001;
 
@@ -15,23 +20,17 @@ const validScales = ['10%', '25%', '50%', '75%', '100%', '125%', '150%', '200%',
 // Percentage scales mapped to floating point values used in arguments
 const validScalesInternal = ['0.1', '0.25', '0.5', '0.75', '1.0', '1.25', '1.5', '2.0', '5.0', '10.0'];
 
-// Command to compile .tex file to .dvi file. Timeout kills LaTeX after 5 seconds if held up
+// Command to compile .tex file to .dvi file. Timeout kills it after 5 seconds if held up
 const latexCMD = 'timeout 5 latex -interaction nonstopmode -halt-on-error --no-shell-escape equation.tex';
 
-// Command to convert .dvi to .svg file
-const dvisvgmCMD = 'dvisvgm --no-fonts --scale=OUTPUT_SCALE --exact equation.dvi';
+// Command to convert .dvi to .svg file. Timeout kills it after 5 seconds if held up
+const dvisvgmCMD = 'timeout 5 dvisvgm --no-fonts --scale=OUTPUT_SCALE --exact equation.dvi';
 
 const dockerImageName = 'blang/latex:ubuntu'; // https://github.com/blang/latex-docker
 
 // Command to run the above commands in a new Docker container (with LaTeX preinstalled)
 const dockerCMD = `cd TEMP_DIR_NAME && exec docker run --rm -i --user="$(id -u):$(id -g)" --net=none -v "$PWD":/data "${dockerImageName}" /bin/sh -c "${latexCMD} && ${dvisvgmCMD}"`;
 
-// Commands to convert .svg to .png/.jpg and compress
-const svgToImageCMD = 'svgexport SVG_FILE_NAME OUT_FILE_NAME';
-const imageMinCMD = 'imagemin IN_FILE_NAME > OUT_FILE_NAME';
-
-const fontSize = 12;
-
 // LaTeX document template
 const preamble = `
 \\usepackage{amsmath}
@@ -41,7 +40,7 @@ const preamble = `
 `;
 
 const documentTemplate = `
-\\documentclass[${fontSize}pt]{article}
+\\documentclass[12pt]{article}
 ${preamble}
 \\thispagestyle{empty}
 \\begin{document}
@@ -52,108 +51,119 @@ EQUATION
 
 // Create temp and output directories on first run
 if (!fs.existsSync(tempDirRoot)) {
-    fs.mkdirSync(tempDirRoot);
+  fs.mkdirSync(tempDirRoot);
 }
 if (!fs.existsSync(outputDir)) {
-    fs.mkdirSync(outputDir);
+  fs.mkdirSync(outputDir);
 }
 
 const app = express();
 
 const bodyParser = require('body-parser');
 app.use(bodyParser.json());
-app.use(bodyParser.urlencoded({extended: true}));
+app.use(bodyParser.urlencoded({ extended: true }));
 
 // Allow static html files and output files to be accessible
 app.use('/', express.static(staticDir));
 app.use('/output', express.static(outputDir));
 
-// POST call for LaTeX to image conversion. Convert and return image URL or error message
-app.post('/convert', function (req, res) {
-    // Ensure valid inputs
-    if (req.body.latexInput) {
-        if (validScales.includes(req.body.outputScale)) {
-            if (validFormats.includes(req.body.outputFormat)) {
-                const id = generateID(); // Generate unique ID for filename
+const conversionRouter = promiseRouter();
+app.use(conversionRouter);
 
-                let eqnInput = req.body.latexInput.trim();
-                if (/\\\\(?!$)/.test(eqnInput) && !eqnInput.includes("&")) { // if any "\\" not at EOF, unless intentionally aligned with &
-                    eqnInput = '&' + eqnInput.replace(/\\\\(?!$)/g, "\\\\&"); // replace any "\\" not at EOF with "\\&", to enforce left alignment
-                }
-                
-                shell.mkdir(`${tempDirRoot}${id}`);
-                
-                const document = documentTemplate.replace('EQUATION', eqnInput);
-                fs.writeFileSync(`${tempDirRoot}${id}/equation.tex`, document); // Write generated .tex file
-                
-                let result = {};
-                
-                let finalDockerCMD = dockerCMD.replace('TEMP_DIR_NAME', `${tempDirRoot}${id}`);
-                finalDockerCMD = finalDockerCMD.replace('OUTPUT_SCALE', validScalesInternal[validScales.indexOf(req.body.outputScale)]);
-                
-                const fileFormat = req.body.outputFormat.toLowerCase();
-                
-                // Asynchronously compile and render the LaTeX to an image
-                shell.exec(finalDockerCMD, {async: true}, function() {
-                    if (fs.existsSync(`${tempDirRoot}${id}/equation.svg`)) {
-                        if (fileFormat === 'svg') { // Converting to SVG, no further processing required
-                            shell.cp(`${tempDirRoot}${id}/equation.svg`, `${outputDir}img-${id}.svg`);
-                            result.imageURL = `${httpOutputURL}img-${id}.svg`;
-                        } else {
-                            
-                            // Convert svg to png/jpg
-                            let finalSvgToImageCMD = svgToImageCMD.replace('SVG_FILE_NAME', `${tempDirRoot}${id}/equation.svg`);
-                            finalSvgToImageCMD = finalSvgToImageCMD.replace('OUT_FILE_NAME', `${tempDirRoot}${id}/equation.${fileFormat}`);
-                            if (fileFormat === 'jpg') { // Add a white background for jpg images
-                                finalSvgToImageCMD += ' "svg {background: white}"';
-                            }
-                            shell.exec(finalSvgToImageCMD);
+// Queue requests to ensure that only one is processed at a time, preventing
+// multiple concurrent Docker containers from exhausting system resources
+conversionRouter.use(queue({ activeLimit: 1, queuedLimit: -1 }));
 
-                            // Ensure conversion was successful; eg. fails if `svgexport` or `imagemin` is not installed
-                            if (fs.existsSync(`${tempDirRoot}${id}/equation.${fileFormat}`)) {
-                                // Compress the resultant image
-                                let finalImageMinCMD = imageMinCMD.replace('IN_FILE_NAME', `${tempDirRoot}${id}/equation.${fileFormat}`);
-                                finalImageMinCMD = finalImageMinCMD.replace('OUT_FILE_NAME', `${tempDirRoot}${id}/equation_compressed.${fileFormat}`);
-                                shell.exec(finalImageMinCMD);
-                                
-                                // Final image
-                                shell.cp(`${tempDirRoot}${id}/equation_compressed.${fileFormat}`, `${outputDir}img-${id}.${fileFormat}`);
-                                
-                                result.imageURL = `${httpOutputURL}img-${id}.${fileFormat}`;
-                            } else {
-                                result.error = `Error converting SVG file to ${fileFormat.toUpperCase()} image.`;
-                            }
-                        }
-                    } else {
-                        result.error = 'Error converting LaTeX to image. Please ensure the input is valid.';
-                    }
-                    
-                    shell.rm('-r', `${tempDirRoot}${id}`); // Delete temporary files for this conversion
-                    
-                    res.end(JSON.stringify(result));
-                });
-                
-            } else {
-                res.end(JSON.stringify({error: 'Invalid image format'}));
-            }
-        } else {
-            res.end(JSON.stringify({error: 'Invalid scale'}));
-        }
-    } else {
-        res.end(JSON.stringify({error: 'No LaTeX input provided'}));
+// Conversion request endpoint
+conversionRouter.post('/convert', async (req, res) => {
+  const id = generateID(); // Generate a unique ID for this request
+
+  try {
+    if (!req.body.latexInput) {
+      res.end(JSON.stringify({ error: 'No LaTeX input provided.' }));
+      return;
     }
+
+    if (!validScales.includes(req.body.outputScale)) {
+      res.end(JSON.stringify({ error: 'Invalid scale.' }));
+      return;
+    }
+
+    if (!validFormats.includes(req.body.outputFormat)) {
+      res.end(JSON.stringify({ error: 'Invalid image format.' }));
+      return;
+    }
+
+    const eqnInput = req.body.latexInput.trim();
+    const fileFormat = req.body.outputFormat.toLowerCase();
+    const outputScale = req.body.outputScale;
+
+    // Generate and write the .tex file
+    const document = documentTemplate.replace('EQUATION', eqnInput);
+    await fsPromises.mkdir(`${tempDirRoot}${id}`);
+    await fsPromises.writeFile(`${tempDirRoot}${id}/equation.tex`, document);
+
+    // Run the LaTeX compiler and generate a .svg file
+    const finalDockerCMD = dockerCMD
+      .replace('TEMP_DIR_NAME', `${tempDirRoot}${id}`)
+      .replace('OUTPUT_SCALE', validScalesInternal[validScales.indexOf(outputScale)]);
+    await execAsync(finalDockerCMD);
+
+    const inputSvgFileName = `${tempDirRoot}${id}/equation.svg`;
+    const outputFileName = `${outputDir}img-${id}.${fileFormat}`;
+
+    // Return the SVG image, no further processing required
+    if (fileFormat === 'svg') {
+      await fsPromises.copyFile(inputSvgFileName, outputFileName);
+
+    // Convert to PNG
+    } else if (fileFormat === 'png') {
+      await sharp(inputSvgFileName, { density: 96 })
+        .toFile(outputFileName); // Sharp's PNG type is implicitly determined via the output file extension
+
+    // Convert to JPG
+    } else {
+      await sharp(inputSvgFileName, { density: 96 })
+        .flatten({ background: { r: 255, g: 255, b: 255 } }) // as JPG is not transparent, use a white background
+        .jpeg({ quality: 95 })
+        .toFile(outputFileName);
+    }
+
+    await cleanupTempFilesAsync(id);
+    res.end(JSON.stringify({ imageURL: `${httpOutputURL}img-${id}.${fileFormat}` }));
+
+  } catch (e) {
+    console.error(e);
+    await cleanupTempFilesAsync(id);
+    res.end(JSON.stringify({ error: 'Error converting LaTeX to image. Please ensure the input is valid.' }));
+  }
 });
 
 // Start the server
-app.listen(port, function() {
-    console.log(`Latex2image listening on port ${port}`);
-});
+app.listen(port, () => console.log(`Latex2Image listening at http://localhost:${port}/`));
 
+// Helper functions
 
-function generateID() { // Generate a random 16-char hexadecimal ID
-    let output = '';
-    for (let i = 0; i < 16; i++) {
-        output += '0123456789abcdef'.charAt(Math.floor(Math.random() * 16));
-    }
-    return output;
+// Deletes temporary files created during a conversion request
+function cleanupTempFilesAsync(id) {
+  return fsPromises.rmdir(`${tempDirRoot}${id}`, { recursive: true });
+}
+
+// Execute a shell command
+function execAsync(cmd, opts = {}) {
+  return new Promise((resolve, reject) => {
+    shell.exec(cmd, opts, (code, stdout, stderr) => {
+      if (code != 0) reject(new Error(stderr));
+      else resolve(stdout);
+    });
+  });
+}
+
+function generateID() {
+  // Generate a random 16-char hexadecimal ID
+  let output = '';
+  for (let i = 0; i < 16; i++) {
+    output += '0123456789abcdef'.charAt(Math.floor(Math.random() * 16));
+  }
+  return output;
 }
diff --git a/package-lock.json b/package-lock.json
index 71086c3..71c3a69 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,8 +1,1443 @@
 {
   "name": "latex2image-web",
   "version": "1.0.0",
-  "lockfileVersion": 1,
+  "lockfileVersion": 2,
   "requires": true,
+  "packages": {
+    "": {
+      "version": "1.0.0",
+      "license": "MIT",
+      "dependencies": {
+        "bluebird": "^3.7.2",
+        "body-parser": "^1.19.0",
+        "express": "^4.17.1",
+        "express-promise-router": "^4.0.1",
+        "express-queue": "^0.0.12",
+        "sharp": "^0.27.0",
+        "shelljs": "^0.8.4"
+      }
+    },
+    "node_modules/accepts": {
+      "version": "1.3.7",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
+      "integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
+      "dependencies": {
+        "mime-types": "~2.1.24",
+        "negotiator": "0.6.2"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/ansi-regex": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/aproba": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.2.0.tgz",
+      "integrity": "sha512-Y9J6ZjXtoYh8RnXVCMOU/ttDmk1aBjunq9vO0ta5x85WDQiQfUF9sIPBITdbiiIVcBo03Hi3jMxigBtsddlXRw=="
+    },
+    "node_modules/are-we-there-yet": {
+      "version": "1.1.5",
+      "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.5.tgz",
+      "integrity": "sha512-5hYdAkZlcG8tOLujVDTgCT+uPX0VnpAH28gWsLfzpXYm7wP6mp5Q/gYyR7YQ0cKVJcXJnl3j2kpBan13PtQf6w==",
+      "dependencies": {
+        "delegates": "^1.0.0",
+        "readable-stream": "^2.0.6"
+      }
+    },
+    "node_modules/array-flatten": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+    },
+    "node_modules/balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
+    },
+    "node_modules/base64-js": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
+      "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ]
+    },
+    "node_modules/bl": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/bl/-/bl-4.0.3.tgz",
+      "integrity": "sha512-fs4G6/Hu4/EE+F75J8DuN/0IpQqNjAdC7aEQv7Qt8MHGUH7Ckv2MwTEEeN9QehD0pfIDkMI1bkHYkKy7xHyKIg==",
+      "dependencies": {
+        "buffer": "^5.5.0",
+        "inherits": "^2.0.4",
+        "readable-stream": "^3.4.0"
+      }
+    },
+    "node_modules/bl/node_modules/inherits": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+      "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+    },
+    "node_modules/bl/node_modules/readable-stream": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+      "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+      "dependencies": {
+        "inherits": "^2.0.3",
+        "string_decoder": "^1.1.1",
+        "util-deprecate": "^1.0.1"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
+    "node_modules/bluebird": {
+      "version": "3.7.2",
+      "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.7.2.tgz",
+      "integrity": "sha512-XpNj6GDQzdfW+r2Wnn7xiSAd7TM3jzkxGXBGTtWKuSXv1xUV+azxAm8jdWZN06QTQk+2N2XB9jRDkvbmQmcRtg=="
+    },
+    "node_modules/body-parser": {
+      "version": "1.19.0",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.19.0.tgz",
+      "integrity": "sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==",
+      "dependencies": {
+        "bytes": "3.1.0",
+        "content-type": "~1.0.4",
+        "debug": "2.6.9",
+        "depd": "~1.1.2",
+        "http-errors": "1.7.2",
+        "iconv-lite": "0.4.24",
+        "on-finished": "~2.3.0",
+        "qs": "6.7.0",
+        "raw-body": "2.4.0",
+        "type-is": "~1.6.17"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
+      "integrity": "sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==",
+      "dependencies": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "node_modules/buffer": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/buffer/-/buffer-5.7.1.tgz",
+      "integrity": "sha512-EHcyIPBQ4BSGlvjB16k5KgAJ27CIsHY/2JBmCRReo48y9rQ3MaUzWX3KVlBa4U7MyX02HdVj0K7C3WaB3ju7FQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "dependencies": {
+        "base64-js": "^1.3.1",
+        "ieee754": "^1.1.13"
+      }
+    },
+    "node_modules/bytes": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
+      "integrity": "sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/chownr": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/chownr/-/chownr-1.1.4.tgz",
+      "integrity": "sha512-jJ0bqzaylmJtVnNgzTeSOs8DPavpbYgEr/b0YL8/2GO3xJEhInFmhKMUnEJQjZumK7KXGFhUy89PrsJWlakBVg=="
+    },
+    "node_modules/code-point-at": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/color": {
+      "version": "3.1.3",
+      "resolved": "https://registry.npmjs.org/color/-/color-3.1.3.tgz",
+      "integrity": "sha512-xgXAcTHa2HeFCGLE9Xs/R82hujGtu9Jd9x4NW3T34+OMs7VoPsjwzRczKHvTAHeJwWFwX5j15+MgAppE8ztObQ==",
+      "dependencies": {
+        "color-convert": "^1.9.1",
+        "color-string": "^1.5.4"
+      }
+    },
+    "node_modules/color-convert": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
+      "dependencies": {
+        "color-name": "1.1.3"
+      }
+    },
+    "node_modules/color-name": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
+    },
+    "node_modules/color-string": {
+      "version": "1.5.4",
+      "resolved": "https://registry.npmjs.org/color-string/-/color-string-1.5.4.tgz",
+      "integrity": "sha512-57yF5yt8Xa3czSEW1jfQDE79Idk0+AkN/4KWad6tbdxUmAs3MvjxlWSWD4deYytcRfoZ9nhKyFl1kj5tBvidbw==",
+      "dependencies": {
+        "color-name": "^1.0.0",
+        "simple-swizzle": "^0.2.2"
+      }
+    },
+    "node_modules/concat-map": {
+      "version": "0.0.1",
+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
+    },
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@@ -473,10 +2520,28 @@
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       "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
     },
+    "which-pm-runs": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/which-pm-runs/-/which-pm-runs-1.0.0.tgz",
+      "integrity": "sha1-Zws6+8VS4LVd9rd4DKdGFfI60cs="
+    },
+    "wide-align": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.3.tgz",
+      "integrity": "sha512-QGkOQc8XL6Bt5PwnsExKBPuMKBxnGxWWW3fU55Xt4feHozMUhdUMaBCk290qpm/wG5u/RSKzwdAC4i51YigihA==",
+      "requires": {
+        "string-width": "^1.0.2 || 2"
+      }
+    },
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+    },
+    "yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
     }
   }
 }
diff --git a/package.json b/package.json
index 5a5b757..15d67c3 100644
--- a/package.json
+++ b/package.json
@@ -9,8 +9,12 @@
   "author": "",
   "license": "MIT",
   "dependencies": {
+    "bluebird": "^3.7.2",
     "body-parser": "^1.19.0",
     "express": "^4.17.1",
-    "shelljs": "^0.8.3"
+    "express-promise-router": "^4.0.1",
+    "express-queue": "^0.0.12",
+    "sharp": "^0.27.0",
+    "shelljs": "^0.8.4"
   }
 }