Purge the Firefox font cache

Please note: This is a unique inquiry and not a duplicate of How to reset css fonts cache. Please refer to the bottom of my question for more details.

TL;DR

I am seeking a reliable method to clear the font cache in Firefox, as standard methods like CTRL+F5 or CTRL+SHIFT+R are not working effectively.

The Issue at Hand

I have implemented a custom font (via CSS) on my server:

@font-face {
    font-family: MySymbols;
    src: url(../fonts/MySymbols.woff);
}

Recently, I added another symbol to the font (Unicode: 21C5 / ⇅).

In Chrome

In Chrome, it should display like the two arrows shown in this image. The screenshot from Chrome illustrates the correct rendering:

https://i.sstatic.net/J5Zmi.png

The "u"s following the image serve as evidence that the correct font is being loaded. The left "u" uses MySymbols as the font-family, while the right one uses a standard font.

In Firefox

However, in Firefox, the display appears differently:

https://i.sstatic.net/aUAOK.png

It seems like Firefox is still utilizing the old font face. While the left "u" appears correctly, the arrows use a standard font instead of the custom one.

Changing

src: url(../fonts/MySymbols.woff);
to
src: url(../fonts/MySymbols_something.woff);
, along with renaming the font file on the server accordingly, results in proper display in Firefox:

https://i.sstatic.net/Gt0sA.png

However, reverting to the original names brings back the incorrect arrow rendering in Firefox, leading to frustration.

Attempts to Resolve the Issue

I have reviewed the thread titled: How to reset css fonts cache. I have tried all suggested solutions, but none have proven effective. Specifically, I have undertaken the following actions:

  • Tried pressing CTRL+F5
  • Tried pressing CTRL+SHIFT+R (which was previously successful)
  • Restarted Firefox, closed the tab, and reopened it
  • Confirmed that the font is not present in any system directories using
    sudo updatedb; locate MySymbols.woff
    . I did not manually install the font, and its name is not common
  • Validated that the CSS is accurate and functional in Chrome

What could be causing this issue and what additional steps can be taken to address it?

Answer №1

One possible solution is:

To clear your browsing history, go to History > Clear Recent History. Make sure to select 'everything' at the top along with 'cache' and 'offline website data'.

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