mirror of
https://github.com/kkapsner/CanvasBlocker
synced 2024-11-10 15:18:52 +01:00
43 lines
1.4 KiB
HTML
43 lines
1.4 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>TextMetrics test</title>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<link href="testIcon.svg" type="image/png" rel="icon">
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<link href="testIcon.svg" type="image/png" rel="shortcut icon">
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<link rel="stylesheet" href="../default.css" type="text/css">
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<style>
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.hash {
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font-family: monospace;
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font-size: 70%;
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}
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</style>
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</head>
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<body>
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<h1>TextMetrics test</h1>
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<h2>Expected result</h2>
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<ol>
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<li>the hashes are different to the hashes when CanvasBlocker is disabled</li>
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<li>the number of differences stays the same when CanvasBlocker is disabled</li>
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<li>if "refresh" is clicked nothing must change</li>
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<li>upon page reload the hashes change (depending on CanvasBlocker settings - e.g. not in the stealth preset)</li>
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<li>Firefox 68 does only offer integer precision in TextMetrics and therefore less fingerprinting potential. CanvasBlocker only changes values if they are no integer and therefore point 1 and 4 are not true in Firefox 68.</li>
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</ol>
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<h2>Tests</h2>
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<div id="tests">
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<div class="test" id="measureText">
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<h3 class="title">measureText</h3>
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Hashes: <span class="hashes"><table>
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<tr>
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<td>all:</td>
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<td class="hash all"></td>
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</tr>
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</table></span><br>
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Number of differences: <span class="differences"></span><br>
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<button class="refresh">refresh</button>
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</div>
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</div>
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<script src="testAPI.js"></script>
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<script src="textMetricsTest.js"></script>
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</body>
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</html> |