JAMstack
Image Optimization

Vector vs. Raster images

Lossless vs lossy

Sizes

Dimensions Pixels File size
100 x 100 10.000 39 KB
200 x 200 40.000 156 KB
300 x 300 90.000 351 KB
500 x 500 250.000 977 KB
800 x 800 640.000 2500 KB

Right Image Format

Format Transparency Animation Browser
GIF Yes Yes All
PNG Yes No All
JPEG No No All
JPEG XR Yes Yes IE
WEBP Yes Yes Chrome, Opera, Android

Open Source Tools

pngquant.org

optipng.sourceforge.net

jpegclub.org/jpegtran

Gatsby Image-API

Gatsby Image

  • Resize large images 
  • Generate multiple images
  • Strip all unnecessary metadata and optimize JPEG and PNG compression
  • Lazy Load
  • Blur-Up or SVG for thumbnails

yarn add gatsby-image

yarn add gatsby-image

const path = require(`path`)

module.exports = {
  plugins: [
    {
      resolve: `gatsby-source-filesystem`,
      options: {
        name: `images`,
        path: path.join(__dirname, `src`, `images`),
      },
    },
    `gatsby-plugin-sharp`,
    `gatsby-transformer-sharp`,
  ],
}
import React from "react"
import { useStaticQuery, graphql } from "gatsby"
import * as S from "../components/styled"
import Img from "gatsby-image"

const Image = () => {
  const data = useStaticQuery(graphql`
    query {
      hera_traced_webp: file(relativePath: { eq: "hera.jpg" }) {
        childImageSharp {
          fluid(
            maxWidth: 1200
            duotone: { highlight: "#f00e2e", shadow: "#192555" }
          ) {
            ...GatsbyImageSharpFluid_withWebp_tracedSVG
          }
        }
      }
    }
  `)

Fragments

 

  • GatsbyImageSharpFixed
  • GatsbyImageSharpFixed_noBase64
  • GatsbyImageSharpFixed_tracedSVG
  • GatsbyImageSharpFixed_withWebp
import React from "react"
import { useStaticQuery, graphql } from "gatsby"
import * as S from "../components/styled"
import Img from "gatsby-image"

const Image = () => {
  const data = useStaticQuery(graphql`
    query {
      hera_traced_webp: file(relativePath: { eq: "hera.jpg" }) {
        childImageSharp {
          fluid(
            maxWidth: 1200
            duotone: { highlight: "#f00e2e", shadow: "#192555" }
          ) {
            ...GatsbyImageSharpFluid_withWebp_tracedSVG
          }
        }
      }
    }
  `)

Gatsby Image

resize

fluid

fixed

 

Resize

width

height

rotate

 

Fluid & Fixed

aspectRatio

base64

duotone

toFormat

 

Fluid vs Fixed

Sharp Module

https://github.com/lovell/sharp

Checklist

  • Prefer vector formats

  • Minify and compress SVG assets
  • Pick best raster image format
  • Experiment with optimal quality settings for raster formats
  • Remove unnecessary image metadata
  • Serve scaled images
  • Automate

github.com/raufsamestone/jamstack-image

jamstack-image.netlify.com

Thx

raufsamestone.com

@raufsamestone

JAMstack Image Optimization

By Berkay Demirbas

JAMstack Image Optimization

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