Clean up a browser without losing what matters
Identify a browser problem, remove only the relevant data, and check bookmarks, passwords and open sessions first.
Follow the method ↓
The answer in 30 seconds
Clearing all browsing data can sign you out and remove useful local information without fixing the cause. Start with the smallest reversible action and test the affected page after each change.
Identify the symptom first. Clear a single site's data or the cache when that is enough, and preserve bookmarks, saved passwords and account recovery details.
Examples to adapt
A cache refresh may help; deleting all passwords is unrelated.
Clearing that site's cookies may reset the session, so make sure recovery methods are available first.
Follow the method
- 1Describe the problem
Note the site, browser, device and exact error. Test a second site to see whether the issue is local.
- 2Save what matters
Check bookmarks, open tabs, saved passwords and whether they are synced or backed up.
- 3Clear narrowly
For one broken website, try its cache or site data first. Read the browser's list of data types before confirming.
- 4Retest
Reload the site, sign in if needed and record whether the problem changed before clearing anything else.
A closer look
Check the scope before clearing browser data
Diagnostic example: only one website malfunctions. Firefox can target one website or a wider set of stored data.
| Situation | Check first | Possible effect |
|---|---|---|
| One website malfunctions | Record its domain and check the selected data | You may be signed out of that website |
| All websites selected | Review scope and time range | Sessions on several services may be lost |
| Problem remains | Record what was cleared and repeat the same task | Repeating a broader deletion does not explain the cause |
Keep a known way to sign in again before deleting cookies.
Does clearing a website’s cookies delete my account there?
No: clearing local data and deleting a service account are separate operations. The service retains its own data according to its rules.
Supporting documentation : Mozilla — Clear cookies and site data · Consulted on 2026-10-25. Examples and calculations are illustrative.
A checklist to keep
Use these checks to record what you found. The grid supports a decision; it does not make one for you.
| Check | What to examine | Action |
|---|---|---|
| Symptom | Site, browser and error | Record |
| Preserve | Bookmarks, passwords, sessions | Check |
| Action | Narrowest relevant data type | Choose |
| Result | What changed after reload | Test |
Read the checklist directly in the table.
What to check
Deleting cookies can sign you out of websites.
Private browsing does not repair a corrupted account or website.
A browser reset can change extensions, permissions and startup settings.
Common questions
Should I clear everything regularly?
There is no universal need. Use a specific symptom and understand what each data type removes.
Will clearing the cache delete bookmarks?
Usually not, but review the exact options shown by your browser before confirming.
Sources and documentation
Documentation consulted on . Examples are illustrative; interfaces and results may change.