Mozilla eating a lot of space

FrancoisK — Thu, 09 Jul 2026 12:56:17 GMT

Hello,

Some months ago I noticed that my system disk has less and less free space. Tried a cleanup but it marginally enhanced the free space.
Then going deeper I noticed that a directory used by Mozilla Firefox is really making it :

C:\Users\François\AppData\Roaming\Mozilla\Firefox\Profiles\wjZDDDl0.Profil 1\storage\to-be-removed

On may 13 I deleted all the subdirectory within and the free space went from 23 to 32 Go

Did it again today and up I went from 25 to 40 Go free space.

What are these files for and why are they not automatically removed as per name ?

Thank you.

I'm using

Windows 11 Famille
Version 25H2
Installé le ‎25/‎11/‎2024
Build du système d’exploitation 26200.8737
Pack de fonctionnalités Pack d’expérience de fonctionnalités Windows 1000.26100.334.0

Firefox 152.0.5 (64 bits)

Re: Mozilla eating a lot of space

siffemcon — Fri, 10 Jul 2026 02:25:18 GMT

@FrancoisK, support requests aren't allowed here. Please post your question with full details at
https://support.mozilla.org/en-US/questions/new/firefox/form.

topic Mozilla eating a lot of space in Discussions

Mozilla eating a lot of space

Re: Mozilla eating a lot of space