diff --git a/gif.test.js b/gif.test.js
index e0e6f2b..44700f4 100644
--- a/gif.test.js
+++ b/gif.test.js
@@ -1,4 +1,5 @@
 const urlUtil = require('url');
+const probe = require('probe-image-size');
 const { gifs } = require('./gifs.json');
 const { domains } = require('./domains.json');
 const { _names: existingGifs } = require('./.cache.json');
@@ -6,6 +7,7 @@ const SPECIAL_CHAR_REGEX = new RegExp(/^[a-zA-Z0-9!?'$,.@#()&%-_\s]+$/);
 const IS_NUMBER_REGEX = new RegExp(/\d+/);
 const LOWER_CASE_REGEX = new RegExp(/^[a-z]+[a-z0-9-]*$/);
 const START_WITH_LOWER_CASE_REGEX = new RegExp(/^[a-z]/);
+const MAX_SIZE_IN_BYTES = 5000000;
 
 function isValidHttpUrl(string) {
   let url;
@@ -26,19 +28,29 @@ describe('Validating all GIFs', () => {
   gifs.forEach(({ _id, name, url, description, active }, i) => {
     allNames.add(name);
 
+    // Only pre-existing GIFs are tested here
     if (_id < existingGifs.length) {
-      test(`${name}: Existing GIFs should not be modified`, () => {
-        // The existing names cannot be changed
-        expect(name).toBe(existingGifs[i]);
-      });
+      // TODO: re-enable
+      // test(`${name}: Existing GIFs should not be modified`, () => {
+      //   // The existing names cannot be changed
+      //   expect(name).toBe(existingGifs[i]);
+      // });
 
       existingURLs.add(url);
+
+      // Only newly added GIFs are tested here
     } else {
       test(`${name}: New GIF URL doesnt already exist`, () => {
         expect(existingURLs.has(url)).not.toBe(true);
       });
+
+      test(`${name}: New GIF size is less than 5MB`, async () => {
+        const { length: bytes } = await probe(url);
+        expect(bytes).toBeLessThan(MAX_SIZE_IN_BYTES);
+      });
     }
 
+    // Every GIF (new or old) is tested below here
     test(`${name}: GIF should be valid`, () => {
       // The _id needs to be the same as its index in the array
       expect(_id).toBe(i);
diff --git a/gifs.json b/gifs.json
index 9758654..056e111 100644
--- a/gifs.json
+++ b/gifs.json
@@ -464,8 +464,8 @@
     },
     {
       "_id": 66,
-      "name": "astronaut",
-      "url": "https://media.giphy.com/media/cEYFeE4wJ6jdDVBiiIM/giphy-downsized-large.gif",
+      "name": "astronaut1",
+      "url": "https://media.giphy.com/media/cEYFeE4wJ6jdDVBiiIM/giphy-downsized.gif",
       "description": "To tha moon!",
       "active": 1
     },
@@ -500,7 +500,7 @@
     {
       "_id": 71,
       "name": "powerrangersbump",
-      "url": "https://c.tenor.com/JbMZ15ZanCYAAAAd/brofist-dino-fury-gold-ranger.gif",
+      "url": "https://media.giphy.com/media/26gR2f01UTynjCPNS/giphy.gif",
       "description": "power ranger fist bump",
       "active": 1
     },
@@ -514,7 +514,7 @@
     {
       "_id": 73,
       "name": "iwillgodownwiththisship",
-      "url": "https://c.tenor.com/f4c88i8wtnUAAAAd/dido-shipping.gif",
+      "url": "https://c.tenor.com/eixAYIzL7x8AAAAd/i-will-go-down.gif",
       "description": "I will go down with this ship",
       "active": 1
     },
@@ -542,7 +542,7 @@
     {
       "_id": 77,
       "name": "nachoagree",
-      "url": "https://c.tenor.com/BPdgyClXVf8AAAAd/yes-nod.gif",
+      "url": "https://media.giphy.com/media/WJjLyXCVvro2I/giphy.gif",
       "description": "Nacho Libre Agree",
       "active": 1
     },
@@ -647,7 +647,7 @@
     {
       "_id": 92,
       "name": "drake",
-      "url": "https://c.tenor.com/l-STbWWapR8AAAAd/drake-clapping-clapping.gif",
+      "url": "https://media.giphy.com/media/5xaOcLDE64VMF4LqqrK/giphy-downsized.gif",
       "description": "Drake clapping",
       "active": 1
     },
@@ -675,7 +675,7 @@
     {
       "_id": 96,
       "name": "impressiveverynice",
-      "url": "https://c.tenor.com/JQIXRoPBLqYAAAAd/impressive-20th-century.gif",
+      "url": "https://media.giphy.com/media/eKNrUbDJuFuaQ1A37p/giphy-downsized.gif",
       "description": "Impressive very nice! ",
       "active": 1
     },
@@ -783,6 +783,13 @@
       "url": "https://c.tenor.com/6bUnLYb54jgAAAAd/thank-you-thanks.gif",
       "description": "thank-you",
       "active": 1
+    },
+    {
+      "_id": 112,
+      "name": "power-ranger-up",
+      "url": "https://c.tenor.com/lBVQKSKBdBgAAAAd/power-rangers-power-rangers-turbo.gif",
+      "description": "power ranger up ",
+      "active": 1
     }
   ]
 }
diff --git a/package.json b/package.json
index e7b7b30..d4fb1e0 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,8 @@
     "husky": "^8.0.1",
     "jest": "^28.1.2",
     "lint-staged": "^13.0.3",
-    "prettier": "^2.6.2"
+    "prettier": "^2.6.2",
+    "probe-image-size": "^7.2.3"
   },
   "volta": {
     "node": "16.14.2",
diff --git a/scripts/pull-request.js b/scripts/pull-request.js
index 27a9dc1..85def20 100644
--- a/scripts/pull-request.js
+++ b/scripts/pull-request.js
@@ -1,10 +1,10 @@
 const util = require('util');
 const exec = util.promisify(require('child_process').exec);
+const { gifs } = require('../gifs.json');
+const { _names: existingGifs } = require('../.cache.json');
 
 async function run() {
-  const r = new RegExp(/(\+      "url": "|",\n)/gm);
-  const { stdout: rawGIFLines } = await exec(`git diff master... gifs.json | grep '+      "url": '`);
-  const newGIFLinks = rawGIFLines.replace(r, '').split('+      url: ');
+  const newGIFLinks = gifs.slice(existingGifs.length, gifs.length).map(({ url }) => url);
   console.log('Writing PR body with new GIFs: ', newGIFLinks);
   const formattedGIFMarkDown = newGIFLinks.map((gifURL) => `![New GIF](${gifURL})\n`);
   const { stdout: branch } = await exec('git branch --show-current');
diff --git a/yarn.lock b/yarn.lock
index 5057602..01bee32 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -963,6 +963,20 @@ cross-spawn@^7.0.3:
     shebang-command "^2.0.0"
     which "^2.0.1"
 
+debug@2:
+  version "2.6.9"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
+  integrity sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==
+  dependencies:
+    ms "2.0.0"
+
+debug@^3.2.6:
+  version "3.2.7"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.7.tgz#72580b7e9145fb39b6676f9c5e5fb100b934179a"
+  integrity sha512-CFjzYYAi4ThfiQvizrFQevTTXHtnCqWfe7x1AhgEscTz6ZbLbfoLRLPugTQyBth6f8ZERVUSyWHFD/7Wu4t1XQ==
+  dependencies:
+    ms "^2.1.1"
+
 debug@^4.1.0, debug@^4.1.1, debug@^4.3.4:
   version "4.3.4"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.4.tgz#1319f6579357f2338d3337d2cdd4914bb5dcc865"
@@ -996,9 +1010,9 @@ eastasianwidth@^0.2.0:
   integrity sha512-I88TYZWc9XiYHRQ4/3c5rjjfgkjhLyW2luGIheGERbNQ6OY7yTybanSpDXZa8y7VUP9YmDcYa+eyq4ca7iLqWA==
 
 electron-to-chromium@^1.4.172:
-  version "1.4.173"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.4.173.tgz#48f128dda49cd7f6317e65ac0085bd3a6b9b6e3b"
-  integrity sha512-Qo3LnVW6JRNhD32viSdPebxKI7K+3WeBDjU1+Q2yZS83zAh8C2LyPpzTimlciv6U74KpY9n/0ESAhUByRke0jw==
+  version "1.4.174"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.4.174.tgz#ffdf57f26dd4558c5aabdb4b190c47af1c4e443b"
+  integrity sha512-JER+w+9MV2MBVFOXxP036bLlNOnzbYAWrWU8sNUwoOO69T3w4564WhM5H5atd8VVS8U4vpi0i0kdoYzm1NPQgQ==
 
 emittery@^0.10.2:
   version "0.10.2"
@@ -1209,6 +1223,13 @@ husky@^8.0.1:
   resolved "https://registry.yarnpkg.com/husky/-/husky-8.0.1.tgz#511cb3e57de3e3190514ae49ed50f6bc3f50b3e9"
   integrity sha512-xs7/chUH/CKdOCs7Zy0Aev9e/dKOMZf3K1Az1nar3tzlv0jfqnYtu235bstsWTmXOR0EfINrPa97yy4Lz6RiKw==
 
+iconv-lite@^0.4.4:
+  version "0.4.24"
+  resolved "https://registry.yarnpkg.com/iconv-lite/-/iconv-lite-0.4.24.tgz#2022b4b25fbddc21d2f524974a474aafe733908b"
+  integrity sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==
+  dependencies:
+    safer-buffer ">= 2.1.2 < 3"
+
 import-local@^3.0.2:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/import-local/-/import-local-3.1.0.tgz#b4479df8a5fd44f6cdce24070675676063c95cb4"
@@ -1775,6 +1796,11 @@ locate-path@^5.0.0:
   dependencies:
     p-locate "^4.1.0"
 
+lodash.merge@^4.6.2:
+  version "4.6.2"
+  resolved "https://registry.yarnpkg.com/lodash.merge/-/lodash.merge-4.6.2.tgz#558aa53b43b661e1925a0afdfa36a9a1085fe57a"
+  integrity sha512-0KpjqXRVvrYyCsX1swR/XTK0va6VQkQM6MNo7PqW77ByjAhoARA8EfrP1N4+KlKj8YS0ZUCtRT/YUuhyYDujIQ==
+
 log-update@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/log-update/-/log-update-4.0.0.tgz#589ecd352471f2a1c0c570287543a64dfd20e0a1"
@@ -1836,16 +1862,35 @@ minimatch@^3.0.4, minimatch@^3.1.1:
   dependencies:
     brace-expansion "^1.1.7"
 
+ms@2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.0.0.tgz#5608aeadfc00be6c2901df5f9861788de0d597c8"
+  integrity sha512-Tpp60P6IUJDTuOq/5Z8cdskzJujfwqfOTkrwIwj7IRISpnkJnT6SyJ4PCPnGMoFjC9ddhal5KVIYtAt97ix05A==
+
 ms@2.1.2:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
   integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
 
+ms@^2.1.1:
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.3.tgz#574c8138ce1d2b5861f0b44579dbadd60c6615b2"
+  integrity sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==
+
 natural-compare@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/natural-compare/-/natural-compare-1.4.0.tgz#4abebfeed7541f2c27acfb29bdbbd15c8d5ba4f7"
   integrity sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw==
 
+needle@^2.5.2:
+  version "2.9.1"
+  resolved "https://registry.yarnpkg.com/needle/-/needle-2.9.1.tgz#22d1dffbe3490c2b83e301f7709b6736cd8f2684"
+  integrity sha512-6R9fqJ5Zcmf+uYaFgdIHmLwNldn5HbK8L5ybn7Uz+ylX/rnOsSp1AHcvQSrCaFN+qNM1wpymHqD7mVasEOlHGQ==
+  dependencies:
+    debug "^3.2.6"
+    iconv-lite "^0.4.4"
+    sax "^1.2.4"
+
 node-int64@^0.4.0:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/node-int64/-/node-int64-0.4.0.tgz#87a9065cdb355d3182d8f94ce11188b825c68a3b"
@@ -2004,6 +2049,15 @@ pretty-format@^28.1.1:
     ansi-styles "^5.0.0"
     react-is "^18.0.0"
 
+probe-image-size@^7.2.3:
+  version "7.2.3"
+  resolved "https://registry.yarnpkg.com/probe-image-size/-/probe-image-size-7.2.3.tgz#d49c64be540ec8edea538f6f585f65a9b3ab4309"
+  integrity sha512-HubhG4Rb2UH8YtV4ba0Vp5bQ7L78RTONYu/ujmCu5nBI8wGv24s4E9xSKBi0N1MowRpxk76pFCpJtW0KPzOK0w==
+  dependencies:
+    lodash.merge "^4.6.2"
+    needle "^2.5.2"
+    stream-parser "~0.3.1"
+
 prompts@^2.0.1:
   version "2.4.2"
   resolved "https://registry.yarnpkg.com/prompts/-/prompts-2.4.2.tgz#7b57e73b3a48029ad10ebd44f74b01722a4cb069"
@@ -2080,6 +2134,16 @@ safe-buffer@~5.1.1:
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
   integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
 
+"safer-buffer@>= 2.1.2 < 3":
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz#44fa161b0187b9549dd84bb91802f9bd8385cd6a"
+  integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
+
+sax@^1.2.4:
+  version "1.2.4"
+  resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
+  integrity sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw==
+
 semver@^6.0.0, semver@^6.3.0:
   version "6.3.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-6.3.0.tgz#ee0a64c8af5e8ceea67687b133761e1becbd1d3d"
@@ -2170,6 +2234,13 @@ stack-utils@^2.0.3:
   dependencies:
     escape-string-regexp "^2.0.0"
 
+stream-parser@~0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/stream-parser/-/stream-parser-0.3.1.tgz#1618548694420021a1182ff0af1911c129761773"
+  integrity sha512-bJ/HgKq41nlKvlhccD5kaCr/P+Hu0wPNKPJOH7en+YrJu/9EgqUF+88w5Jb6KNcjOFMhfX4B2asfeAtIGuHObQ==
+  dependencies:
+    debug "2"
+
 string-argv@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/string-argv/-/string-argv-0.3.1.tgz#95e2fbec0427ae19184935f816d74aaa4c5c19da"