File extensions being shown in Pages and Numbers documents

Macbook Pro Ventura 13.6.9

Pages 14.1

Numbers 14.1


Recently some Pages and Numbers documents have been suddenly showing the file extension in the document's title bar and Finder window. I have verified that the "Show all file extensions" setting is off in Finder with a restart and have tried creating a duplicate document or renaming, where shortly after the file extension shows up again. I have opened the Pages document on the web version of iCloud but not the Numbers document. This only happens with certain Pages documents and all newly created Numbers documents. This doesn't actually functionally affect, it's just sort of strange to happen suddenly.

MacBook Pro 13″, macOS 13.6

Posted on Apr 10, 2025 7:04 AM

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Apr 12, 2025 3:24 AM in response to Owl-53

Like you, I am running Sequoia 15.4


At least in my Mac, extensions show in Pages or Numbers precisely as expected, that is, when the file has the extension showing in Finder.


Extension set to NOT hidden shows in Pages as well:



If I click the checkbox to Hide extension:



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Apr 10, 2025 7:13 AM in response to CagwinNGrizz

Pages and Numbers will display in the respective document title bar, the current extension status of that document in the Finder. Hide the extension in the Finder via the Get Info panel and the extension will not show on the document title bar.


Pages for iCloud, iOS/iPadOS, and macOS are all different implementations of Pages for that particular platform.


Being concerned over whether an extension does or does not appear in the respective platform document's title bar is not going to change the application's functionality, and you should not be concerned about it.

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Apr 12, 2025 2:12 AM in response to ckirchner

Running macOS 15.4 Sequoia with the lasts versions of Pages, Number, and Keynote, version 14.4


Yes, the file extensions for each of these applications have been appending in the file names


The, Why this has occurred, could only be answered by Apple


As has been rightly mentioned earlier, there is no functional degradation that has happened.


Let us remember, fingers pointing to myself too as I found this irksome at first


Apple makes some changes for reasons none of use can answer


Form now, It is what it is.

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Apr 12, 2025 3:34 AM in response to ckirchner

The Finder Settings > Advanced [ ] Show all file extensions has nothing to do with hiding file extensions when it is unchecked.


The application developer, using one line of NSFileManager code, can set the NSFileExtensionHidden attribute on the saved file to true or false. As an end user, you have no control over this application file-saving behavior, unless you follow Luis Segueira1's Get Info panel example afterward.

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Apr 15, 2025 6:26 AM in response to CagwinNGrizz

Setting Finder > Settings > Advanced > Show all file extensions ON displays extensions even if they are hidden via Finder > Get Info > Hide extension.


mdls a.txt
MDItemFSIsExtensionHidden         = 1


exiftool -a -G1 -s -MacOS:MDItemFSIsExtensionHidden a.txt
[MacOS]         MDItemFSIsExtensionHidden       : 1
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File extensions being shown in Pages and Numbers documents

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