# Changing a line width in canvas in JavaScript

The line width is set using the `lineWidth` property. Just give it a width, like this: `lineWidth = 5` - you get a line width of `5px`. Let's look at an example:

`<canvas width="200" height="200" style="background: #f4f4f4;"></canvas>` `let canvas = document.querySelector('canvas'); let ctx = canvas.getContext('2d'); ctx.beginPath(); ctx.lineWidth = 5; // width of 5px ctx.moveTo(50, 50); ctx.lineTo(150, 50); ctx.stroke();`

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A width can also be changed for outlines, such as those drawn with `rect`:

`<canvas width="200" height="200" style="background: #f4f4f4;"></canvas>` `let canvas = document.querySelector('canvas'); let ctx = canvas.getContext('2d'); ctx.rect(50, 50, 100, 100); ctx.lineWidth = 5; ctx.stroke();`

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