Does converting an image to DataURL format for storage in a browser's local storage remove or delete the EXIF metadata? Specifically interested in Chrome.
Does converting an image to DataURL format for storage in a browser's local storage remove or delete the EXIF metadata? Specifically interested in Chrome.
Converting an image to a data URL involves simply encoding the binary stream of the image file using base64. Therefore, the original EXIF data is not retained in the process.
It's important to note that if you draw an image onto an HTML5 Canvas and then convert it to a data URL using the toDataURL method, the resulting data URL will not preserve the original EXIF data. The canvas only uses pixel data and dimensions to generate the data URL, potentially compressing the image differently than the original file. This could result in a lossless PNG appearing different when converted to a data URL from the canvas.
The way you choose to convert the image will determine whether or not the metadata is preserved. If you opt for base64 encoding the entire image file, the metadata remains intact. On the other hand, if you decide to use the canvas method for conversion (check out this link), only the raw image data will be stored.
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