How to load an image in an HTML canvas
I was using the canvas
npm package to draw an image server-side using the Canvas API.
Note: this is how to work with images in a canvas in Node.js, not in the browser. In the browser itβs different.
Load the loadImage()
function
const { createCanvas, loadImage } = require('canvas')
Create the canvas:
const width = 1200
const height = 630
const canvas = createCanvas(width, height)
const context = canvas.getContext('2d')
Then call loadImage()
, which returns a promise when the image is loaded:
loadImage('./logo.png').then(image => {
})
You can also use, inside an async function:
const image = await loadImage('./logo.png')
Once you have the image, call drawImage
and pass it with the x, y, width and height parameters:
context.drawImage(image, 340, 515, 70, 70)
β Get my JavaScript Beginner's Handbook
I wrote 21 books to help you become a better developer:
- HTML Handbook
- Next.js Pages Router Handbook
- Alpine.js Handbook
- HTMX Handbook
- TypeScript Handbook
- React Handbook
- SQL Handbook
- Git Cheat Sheet
- Laravel Handbook
- Express Handbook
- Swift Handbook
- Go Handbook
- PHP Handbook
- Python Handbook
- Linux Commands Handbook
- C Handbook
- JavaScript Handbook
- Svelte Handbook
- CSS Handbook
- Node.js Handbook
- Vue Handbook