Font size varies between Confluence pages

[Robert Schneider]

Here are two pages as an example in our public knowledge base, which do not have the same font rendering. Has anyone an idea what the cause is and how to fix it?

https://netxautomation.atlassian.net/wiki/x/OABXOg

https://netxautomation.atlassian.net/wiki/x/rIDHO

I cannot figure out what the difference is. It seems that the whole content of some pages has smaller font sizes. Even the editor shows a smaller font size.

And idea?

[Arkadiusz Wroblewski · Accepted solution]

Hello @Robert Schneider 

It looks like you’re seeing two different editor/page types in Confluence Cloud.

Most likely cause: Legacy editor vs. new Cloud editor

Some pages are still in the legacy editor (often older/migrated pages or pages copied from older templates). Those pages can render with a smaller base font and you’ll notice it even in edit mode, exactly like you described.

How to check quickly

Open the page Edit

If it looks like the older editor UI / you see any hint about converting, it’s a legacy page.

Compare with a page that looks “normal” (new editor UI).

Fix
Convert the “small font” pages to the new editor:

Atlassian doc: Convert pages to the new editor

Once both pages are in the same editor, typography usually becomes consistent.

Also worth checking (less common): Include Page / embedded content

If the “small font” content is coming in via Include Page (or similar embedding), there’s a known case where included content can render smaller.

Workaround (if that’s your case): avoid including that page, or move the content directly, until it’s resolved.

Practical tip to stop it spreading

If people create new pages by copying an older “small font” page, the copy can inherit the legacy format. Best fix is:

Convert the source/template page first, then copy from that.

Hope it helps. Have a great Day :)

[Robert Schneider]

Thanks for that. They are both updated and do not use the legacy editor. I have converted many pages already, but the result varies. Sometimes I have the normal, sometimes I have the lower font size. Even editing does not change it. 

[Arkadiusz Wroblewski]

@Robert Schneider 

if both pages are already in the new editor, then the “randomly smaller font” is very likely Compact Mode / compact density (a newer page-level setting). Converted pages can end up with compact density enabled, which makes everything look smaller  including in edit mode.

Did you checked that ? https://community.atlassian.com/forums/Confluence-articles/New-feature-Compact-Mode-and-Max-Width-to-support-information/ba-p/3190468 

[Robert Schneider]

That's it, as it seems! Didn't know that. 

A bit strange is, that I thought I see this behaviour for a longer time. Not just since 11.02.2026 - the date of the article. Anyway, now I know what I can do to fix it.

Thank you very much!

[Arkadiusz Wroblewski]

@Robert Schneider 

Glad we can help you and find Solution :)