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Is it possible to change an existing file's extension in a SP document library? I have seen many example on renaming the file's name but not the actual extension. For example is a file's name is file.html can i change it to file.aspx without having to create a new file and deleting the old one? Thanks!
You can indeed use HTTP requests in Power Automate to change a file extension on SharePoint. Here's a step-by-step guide on how to do it:
Trigger: Start with a trigger that suits your needs, such as "When a file is created or modified" in a SharePoint library.
Send an HTTP request to SharePoint:
- Site Address: Your SharePoint site URL.
- Method: POST.
- URI:
_api/web/GetFileByServerRelativeUrl('/sites/YourSite/Shared Documents/YourFileName.old')/moveto(newurl='/sites/YourSite/Shared Documents/YourFileName.new',flags=1)
- Headers:
json
{
"Accept": "application/json;odata=verbose",
"Content-Type": "application/json;odata=verbose"
}
This HTTP request uses the
movetomethod to rename the file, effectively changing its extension[1][2].Here's a more detailed breakdown:
Trigger: Choose a trigger that fits your scenario, such as "When a file is created or modified".
Send an HTTP request to SharePoint:
- Site Address: Enter your SharePoint site URL.
- Method: Select POST.
- URI: Use the following format:
_api/web/GetFileByServerRelativeUrl('/sites/YourSite/Shared Documents/YourFileName.old')/moveto(newurl='/sites/YourSite/Shared Documents/YourFileName.new',flags=1)Replace
YourSite,YourFileName.old, andYourFileName.newwith your actual site name and file names.
Headers: Add the following headers:
{ "Accept": "application/json;odata=verbose", "Content-Type": "application/json;odata=verbose" }This method allows you to rename the file, effectively changing its extension without needing to download and re-upload the file.
Would you like more details on any of these steps or help with setting up the flow?
References
Hi,
Is there any solution for changing file extensions?
Thank you
Yes i am passing the filename and extension within the body liek below. I even tried the new endpoint and it doesnt not change the actual extension.
{
"formValues":[
{
"FieldName":"FileLeafRef",
"FieldValue":"Filename.txt"
}
]
}
Are you also passing in the extensions ?
I made a quick research and also found that it Wald solved with another api endpoint, maybe that helps https://powerusers.microsoft.com/t5/General-Power-Automate/Renaming-SharePoint-file-using-REST-API-with-Power-Automate-cuts/td-p/853435
I tried this and got the flow to work however, it is not working as we expect. If the file already stored in the library is <FileName.aspx> and i want to change it to <NewFile.txt> the flow will run successfully but it only changes the file's name not the extension. I end up getting NewFile.html
Thank you your response, I was aware of this but i was looking to retain the document id and not have to create a new one and delete the old file.
Hi @Anonymous ,
I am not aware of an action for simply changing the file type with one action in Power Automate. you can Create a new file with the content and just pass in file name the new format with a concat() function. You can use directly Name with .xlsx like in my screenshot or use an expression
concat(FileName,‘.docx‘)
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