Created
March 14, 2018 17:07
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Image file to Base64 data URI
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| <html> | |
| <head></head> | |
| <body> | |
| <input id="file-upload" multiple="multiple" type="file"/> | |
| <img id="file-placeholder"/> | |
| <script> | |
| function blobToDataURI(blob) { | |
| return new Promise((resolve, reject) => { | |
| const reader = new FileReader(); | |
| reader.addEventListener('load', function () { | |
| resolve(this.result); | |
| }, false); | |
| reader.onerror = reject; | |
| reader.readAsDataURL(blob); | |
| }); | |
| } | |
| document.getElementById('file-upload').addEventListener('change', async function () { | |
| for (const file of this.files) { | |
| console.log(`"${file.name} (${file.type}, ${file.size} bytes)`); | |
| const dataURI = await blobToDataURI(file); | |
| document.getElementById('file-placeholder') | |
| .setAttribute( | |
| 'src', dataURI | |
| ); | |
| } | |
| }, false); | |
| </script> | |
| </body> | |
| </html> |
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