diff --git a/src/register-service-worker.js b/src/register-service-worker.js
index 65aa951..9660b94 100644
--- a/src/register-service-worker.js
+++ b/src/register-service-worker.js
@@ -22,7 +22,7 @@ export default function register () {
     }
 
     window.addEventListener('load', () => {
-      const swUrl = `/service-worker.js`
+      const swUrl = '/service-worker.js'
 
       if (isLocalhost) {
         // This is running on localhost. Lets check if a service worker still exists or not.
diff --git a/src/services/camera.js b/src/services/camera.js
index 8b2f2d8..6eebbc5 100644
--- a/src/services/camera.js
+++ b/src/services/camera.js
@@ -10,7 +10,7 @@ export async function getCamera (shouldFaceUser) {
     preferredFacingMode
   ].map(facingModeConstraint => ({ video: { facingMode: facingModeConstraint } }))
 
-  for (let constraints of constraintsList) {
+  for (const constraints of constraintsList) {
     try {
       console.log(constraints)
       return {
diff --git a/src/services/capture.js b/src/services/capture.js
index 139d8e2..f38a685 100644
--- a/src/services/capture.js
+++ b/src/services/capture.js
@@ -7,7 +7,7 @@ import {
   GIF_FRAME_RATE
 } from '/constants.js'
 
-export function capture({ mediaStream, facingMode }, duration, progressCallback) {
+export function capture ({ mediaStream, facingMode }, duration, progressCallback) {
   const delayTime = 1000 / GIF_FRAME_RATE
   const totalFrames = duration / 1000 * GIF_FRAME_RATE
 
@@ -35,7 +35,7 @@ export function capture({ mediaStream, facingMode }, duration, progressCallback)
       video.removeEventListener('canplaythrough', afterVideoAvailable)
     })
 
-    function afterVideoAvailable() {
+    function afterVideoAvailable () {
       const canvas = document.createElement('canvas')
       canvas.width = GIF_WIDTH
       canvas.height = GIF_HEIGHT
@@ -51,7 +51,6 @@ export function capture({ mediaStream, facingMode }, duration, progressCallback)
       const destinationRectangle = makeRectangle(0, 0, canvas.width, canvas.height)
       const soureRectangle = crop(makeRectangle(0, 0, video.videoWidth, video.videoHeight))
 
-
       captureFrame()
 
       const intervalId = setInterval(captureFrame, delayTime)
@@ -95,4 +94,4 @@ export function capture({ mediaStream, facingMode }, duration, progressCallback)
       }
     }
   })
-}
\ No newline at end of file
+}
diff --git a/src/services/countdown.js b/src/services/countdown.js
index 620dd1e..caddf5a 100644
--- a/src/services/countdown.js
+++ b/src/services/countdown.js
@@ -4,7 +4,7 @@ export function countdown (n, delay, onStep) {
   return task(resolver => {
     let count = 0
 
-    let intervalId = setInterval(() => {
+    const intervalId = setInterval(() => {
       count++
       onStep(n - count)
 
diff --git a/src/views/components/encoding-loader.vue b/src/views/components/encoding-loader.vue
index 8845285..8675979 100644
--- a/src/views/components/encoding-loader.vue
+++ b/src/views/components/encoding-loader.vue
@@ -26,7 +26,7 @@ export default {
   computed: {
     pathDashOffset () {
       if (this.percent) {
-        let to = this.progressPerimeter * ((100 - this.percent) / 100)
+        const to = this.progressPerimeter * ((100 - this.percent) / 100)
         return Math.max(0, to) // Prevent negative number
       }
       return this.progressPerimeter