Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Stashy

Stashy by blosny

A secure, local, and ad-free games library assistant that highlights owned Steam and Epic Games titles directly on product store pages, preventing accidental double purchases.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

About this extension
Stashy is a 100% offline, privacy-first browser extension designed for PC gamers who maintain libraries across multiple platforms. By securely matching your local catalog, Stashy displays elegant visual indicators directly on Steam and Epic Games store pages, warning you if you already own a game, if you own a more complete edition, or if you own the base game while viewing a DLC package.

🌟 Key Features
  • Elegant Dark-Matte HUD: Sophisticated Apple/Notion-inspired minimalist cards that blend seamlessly into native page layouts without glowing AI distractions.
  • Bilingual Support (EN / TR): Instantly toggle between English and Turkish languages directly from the extension pop-up menu.
  • Base Game & DLC Guard: Automatically compares titles and triggers clean alerts if you own a base game but are viewing an expanded bundle.
  • Zero-Click Passive Sync: Simply browse your Steam Games list or Epic Transactions page, and Stashy securely indexes your library in the background.
  • 100% Private & Local: Zero external server connections, zero data collection, and zero credentials required. All data remains strictly inside your browser sandbox.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access your data for steamcommunity.com
  • Access your data for www.epicgames.com
  • Access your data for epicgames.com
  • Access your data for accounts.epicgames.com
  • Access your data for store.steampowered.com
  • Access your data for store.epicgames.com

Optional permissions:

  • Access your data for store.steampowered.com
  • Access your data for steamcommunity.com
  • Access your data for store.epicgames.com
  • Access your data for www.epicgames.com
  • Access your data for epicgames.com

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support site
  • Support Email
  • Copy add-on ID
Version
1.3.0
Size
1.39 MB
Last updated
4 days ago (May 19, 2026)
Related Categories
  • Privacy & Security
  • Shopping
  • Games & Entertainment
License
MIT License
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.