javascript resize canvas to fit content

Is there a way to crop an HTML canvas based solely on its content?

I've been using strokeText to create the canvas content, making it tricky to determine the actual size. Would it be possible to loop through each pixel of the canvas, or is there a more efficient method available?

Thank you

Answer №1

Before you display the text, try using measureText to determine the space it will occupy on screen. I trust this addresses your inquiry.

Answer №2

Hey Patrick! If you're working with a canvas, check out the "Pixel Manipulation" section on this helpful reference sheet for iterating through pixels.

While analyzing every pixel for text purposes would be crazy, don't forget about measureText, suggested by @RobotRock. Just keep in mind that it's not always 100% accurate based on my own experiences.

Don't overlook the useful text manipulation properties in the API like textAlign and textBaseline. If you're looking into measureText, chances are you'll also want to align your text at some point!

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