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+---
+title: "How to optimize image for websites from the command line"
+date: 2023-11-10T22:16:00+00:00
+---
+
+When hosting your website with a lot of images, your users need a lot of bandwidth just to load some images, but most of the time the image doesn't need to be that big for the user to load. Here is a guide on how to optimize images for these kind of situations, credits to [Eric Murphy](https://youtu.be/8zj44m0hAoU?si=wAkGlGn5CSWYKR9n). I typed the video in text format as it is such a good video that I want to take notes of that.
+
+1. Install imagemagick
+```sh
+sudo pacman -S imagemagick
+```
+
+# Optimise JPGs
+
+```sh
+convert image.jpg -resize 400x400 image.min.jpg # resize image as you don't always need that big
+convert image.jpg -quality 75 image.min.jpg # reduce quality of image, 75% is a good compromise between file size and quality
+convert image.jpg -strip image.min.jpg # remove metadata (eg camera details, location, etc.)
+
+convert image.jpg -sampling-factor 4:2:0 -strip -quality 75 -interlace JPEG -colorspace sRGB -resize 0 converted.jpg # best for web quality wise
+```
+
+You can make it into a shell script
+```sh
+#!/bin/sh
+
+convert $1 -sampling-factor 4:2:0 -strip -quality 75 -interlace JPEG -colorspace sRGB -resize $2 $3
+```
+
+# Optimise PNGs
+
+Mostly same as JPGs
+
+# Optimise batch of files at a time
+
+```
+mogrify -sampling-factor 4:2:0 -strip -quality 75 -interlace JPEG -colorspace sRGB -resize 400 -path "opt" *.jpg # converting all jpgs and put all converted jpgs into opt folder
+```
+
+# Optimise SVGs
+
+First install svgo with npm
+
+```sh
+npm i -g svgo
+```
+
+Then run
+```sh
+svgo logo.svg -o logo.min.svg
+```
+# Batch convert SVGs
+
+```sh
+svgo -f ./assets/svgs -o ./assets/optimiszedsvgs # -f specifiying the directory and -o is the output directory
+```