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I have a current implementation which export a report using the navigator.msSaveOrOpenBlob(blob, defaultName) function which takes in only the file data and file name as argument.

Would it be possible to perform a modification to add header/footer information to the blob file using the same function? Or do I have to look into a different implementation to include the header footer?

Simon Newell
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  • Probably not - blob objects can't be updated although you can combine old and new blobs in a specified order. Note the `msSaveOrOpenBlob` method is deprecated and may stop working at any time, and hence is really only suitable for supporting legacy systems. – traktor Mar 05 '21 at 08:56
  • Previous question answers that may be of help: https://stackoverflow.com/a/24876873/5217142 , https://stackoverflow.com/a/45732897/5217142 , https://stackoverflow.com/q/61203503/5217142 - all assuming the file does not to be rendered in its entirety to add headers and footers. – traktor Mar 05 '21 at 09:11

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