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    <p>You can query the computed lengths of the string that should go on the path, and the length of the path. Then compare the two, if the string length is longer than the path length then text will fall off the path.</p> <p>You can also use the knowledge of the path length to squeeze the string to fit, like this:</p> <pre><code>&lt;svg viewBox="0 0 500 300" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"&gt; &lt;defs&gt; &lt;path id="s3" d="M 10,90 Q 100,15 200,70 "/&gt; &lt;/defs&gt; &lt;g&gt; &lt;text font-size="20"&gt; &lt;textPath xlink:href="#s3" textLength="204" lengthAdjust="spacingAndGlyphs"&gt; The quick brown fox jumps over the lazy dog &lt;/textPath&gt; &lt;/text&gt; &lt;use x="0" y="0" xlink:href="#s3" stroke="black" fill="none"/&gt; &lt;/g&gt; &lt;/svg&gt; </code></pre> <p>Here's an example where the string length is manipulated by decreasing the font-size:</p> <pre><code>&lt;svg viewBox="0 0 500 300" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"&gt; &lt;defs&gt; &lt;path id="s3" d="M 10,90 Q 100,15 200,70 "/&gt; &lt;/defs&gt; &lt;g&gt; &lt;text font-size="20" font-family="Arial,Helvetica,sans-serif"&gt; &lt;textPath id="tp" xlink:href="#s3" lengthAdjust="spacingAndGlyphs"&gt; The quick brown fox jumps over the lazy dog &lt;/textPath&gt; &lt;/text&gt; &lt;use x="0" y="0" xlink:href="#s3" stroke="black" fill="none"/&gt; &lt;/g&gt; &lt;script&gt;&lt;![CDATA[ var textpath = document.getElementById("tp"); var path = document.getElementById("s3"); var fontsize = 20; while (textpath.getComputedTextLength() &gt; path.getTotalLength()) { fontsize -= 0.01; textpath.setAttribute("font-size", fontsize); } ]]&gt;&lt;/script&gt; &lt;/svg&gt; </code></pre>
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    1. POSVG textpath, determine when text goes beyond the path
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    1. USErik Dahlström
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    1. CO+1, This isn't *exactly* true, though, since the last character will only disappear if more than half of it falls off the path. So `getComputedTextLength()` can be slightly larger than `getTotalLength()` before anything actually disappears. And it gets even more complicated when you start messing with `text-anchor` or `startOffset`, or start moving `tspan`s around on the path.
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    2. CO@mercator: you're right, it is however possible to measure each character separately and be more precise. startOffset just sets the alignment point on the path (in percent along the path), and text-anchor sets how to align around the alignment point. It's a bit more complicated, but it's still possible to calculate in script I think.
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    3. COHi everyone! One question... What if what I want something like text overflow through the path? Sorry if it's a dumb question but I know very little of SVG and the overflow property is not so obvious using paths... :S
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      1. USBeto Aveiga
 

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