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HTML canvas textBaseline Property

❮ Canvas API


Draw a red line at y=100, then place each word at y=100 with different textBaseline values:



const canvas = document.getElementById("myCanvas");
const ctx = canvas.getContext("2d");

//Draw a red line at y=100
ctx.strokeStyle = "red";
ctx.moveTo(5, 100);
ctx.lineTo(395, 100);

ctx.font = "20px Arial"

//Place each word at y=100 with different textBaseline values
ctx.textBaseline = "top";
ctx.fillText("Top", 5, 100);
ctx.textBaseline = "bottom";
ctx.fillText("Bottom", 50, 100);
ctx.textBaseline = "middle";
ctx.fillText("Middle", 120, 100);
ctx.textBaseline = "alphabetic";
ctx.fillText("Alphabetic", 190, 100);
ctx.textBaseline = "hanging";
ctx.fillText("Hanging", 290, 100);
Try it Yourself »


The textBaseline property sets or returns the current text baseline used when drawing text.

The illustration below demonstrates the various baselines supported by the textBaseline attribute:

textBaseline illustration

Note: The fillText() and strokeText() methods will use the specified textBaseline value when positioning the text on the canvas.

Default value: alphabetic
JavaScript syntax: context.textBaseline = "alphabetic|top|hanging|middle|ideographic|bottom";

Property Values

Values Description Play it
alphabetic Default. The text baseline is the normal alphabetic baseline Play it »
top The text baseline is the top of the em square Play it »
hanging The text baseline is the hanging baseline Play it »
middle The text baseline is the middle of the em square Play it »
ideographic The text baseline is the ideographic baseline Play it »
bottom The text baseline is the bottom of the bounding box Play it »

Browser Support

The <canvas> element is an HTML5 standard (2014).

textBaseLine is supported in all modern browsers:

Chrome Edge Firefox Safari Opera IE
Yes Yes Yes Yes Yes 9-11

❮ Canvas API