How to Clean IndexDB: Advanced Browser Storage Guide (2025)

Learn how to clean IndexDB storage in Chrome, Firefox, and Safari. Understand what IndexDB is, when to clear it, and how to free up space. Complete guide with developer tools and automation tips.

January 1, 2025
8 min read
Advanced Browser Storage
How to Clean IndexDB: Advanced Browser Storage Guide (2025)

How to Manually Clear IndexDB

Browsers don’t always make IndexDB cleaning obvious, but here’s how you can do it:
  • Chrome / Edge: Go to Settings → Privacy & Security → Site settings → View permissions and data stored across sites. Search for a site and click the trash icon next to its stored data. Or open DevTools (F12), go to the Application tab, choose IndexDB, right-click a database, and select Delete.
  • Firefox: Visit about:preferences#privacy, scroll to Cookies and Site Data, and click Manage Data. Find the website and remove its data. Advanced users can open about:devtools-toolbox, go to Storage, select IndexDB, and delete databases.
  • Safari (Mac): Open Preferences → Privacy → Manage Website Data, search for the site, and press Remove or Remove All.

What Is IndexDB and Why It Matters

IndexDB is a built-in database inside your browser. Web apps use it to store data locally so they can run faster and even work offline. While this technology powers many modern sites, stored data can pile up over time, eating disk space and slowing performance. Cleaning IndexDB occasionally helps keep your browser light and responsive.

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Webmail and productivity apps often save large caches of messages or documents.
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Games and media apps may store graphics, audio, or level data.
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Old entries from unused sites can remain long after you stop visiting them.
What Is IndexDB and Why It Matters - How to Clean IndexDB: Advanced Browser Storage Guide (2025)

When Should You Clean IndexDB?

If web apps seem bloated, pages take too long to load, or your browser storage is near capacity, clearing IndexDB can help. It’s also wise after uninstalling a progressive web app or when troubleshooting login or sync issues.

Automate IndexDB Cleanup

Manually digging through settings is tedious, especially if you use many sites. Our Cache & Data Cleaner Extension helps you clear IndexDB, cache, cookies, and other stored data in one step. You can schedule automatic sweeps, target specific sites, or wipe everything when closing your browser — keeping storage lean without extra effort.

Automate IndexDB Cleanup - How to Clean IndexDB: Advanced Browser Storage Guide (2025)

Best Practices for IndexDB Management

A few simple habits can keep IndexDB from becoming a burden:

  1. 1
    Clear data from apps you’ve stopped using.
  2. 2
    Periodically audit storage with your browser’s site-data tools.
  3. 3
    Pair IndexDB cleaning with cache and cookies removal for overall browser hygiene.
  4. 4
    Use retention rules in our extension to automatically delete data older than a set period.

Common Myths About IndexDB

IndexDB is often misunderstood. Here’s the truth behind some myths:

IndexDB Myths Debunked

Let’s clarify a few misconceptions:
  • Myth: Deleting IndexDB will break all your websites.
    Fact: Sites may need to reload assets, but they’ll recreate databases if required.
  • Myth: IndexDB is the same as cache.
    Fact: Cache stores static files, while IndexDB stores structured data like messages or settings.
  • Myth: Clearing IndexDB erases passwords.
    Fact: Logins are usually saved in cookies or your browser’s password manager, not IndexDB.

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Frequently Asked Questions

If a web app stores drafts or offline files in IndexDB, clearing it can remove them. Make sure you’ve synced or exported important items before deletion.
It can. Heavy apps like email clients or design tools may save hundreds of MB or even several GB if you don’t clean it.
Yes — it’s a supported maintenance action in all major browsers. Just remember some sites may reload resources or re-sync after cleaning.
Every few months is enough for most users, or sooner if an app behaves strangely or your disk space is low.
Definitely. Our extension lets you include IndexDB in scheduled cleanups alongside cache, cookies, and other storage data.

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