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April 5, 2024 12:26
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Save CTimmerman/c0f371b30bc85c689fa1 to your computer and use it in GitHub Desktop.
Convert SVG to PNG / save SVG as PNG
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| // SVG2PNG | |
| // By Cees Timmerman, 2024-04-05. | |
| // Paste into console and adjust indices as needed. | |
| let im = document.getElementsByTagName('img') | |
| let fname = location.href | |
| if (im.length < 1) { | |
| let svg = document.getElementsByTagName('svg')[0] | |
| let bb = svg.getBBox() | |
| im = new Image(bb.width, bb.height) | |
| im.src = 'data:image/svg+xml;charset=utf-8;base64,' + btoa(document.getElementsByTagName('svg')[0].outerHTML) | |
| } else { | |
| im = im[0] | |
| fname = im.src | |
| } | |
| let canvas = new OffscreenCanvas(im.width, im.height) | |
| canvas.getContext('2d').drawImage(im, 0, 0, im.width, im.height) | |
| canvas.convertToBlob().then(blob => { | |
| const url = window.URL.createObjectURL(blob) | |
| let w = window.open(url) | |
| let a = w.document.createElement("a") | |
| a.download = (fname.split('#')[0].split('?')[0].split('/').pop()) + ".png" | |
| a.href = url | |
| a.click() | |
| w.close() | |
| window.URL.revokeObjectURL(url) | |
| }) |
Page with SVG in first img tag: https://web.mit.edu/remy/
Open image in new tab to see support for SVG tag only.
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TODO: Test in Firefox; https://stackoverflow.com/questions/25789086/save-svg-to-disk-as-png-image-browser-discrepancy