# Crypto Address Checker

> Compare two crypto addresses (or any text) from any webpage via right-click. Persistent side panel / sidebar shows addresses, source URLs, and a live MATCH / NOT MATCH indicator.

Canonical page: [https://chrome-stats.com/d/crypto-address-checker](https://chrome-stats.com/d/crypto-address-checker)

## Overview

- **ID:** `crypto-address-checker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Allan Merolla
- **Category:** web-development,privacy-security,alerts-updates
- **Version:** 1.0.0
- **Last updated:** 2026-05-19
- **First published:** 2026-05-16
- **Size:** 16 KB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/crypto-address-checker/)
- **Website:** [https://cydata.dev](https://cydata.dev/)

## Description

No more flipping between tabs or copy-pasting into notepad. The extension lives in your browser's side panel (Chrome/Edge) or sidebar (Firefox) and stays visible while you browse.
<ol><li>Right-click copy — Select any text on a page, right-click, and choose "Copy to Crypto Address Checker 1" or "2". The panel instantly shows the text, the source URL, and whether the two slots match.</li><li>Smart hover extraction — Didn't select the full address? No problem. Right-click directly on any word without highlighting and the extension intelligently extracts the complete token under your cursor, stopping at whitespace, non-ASCII characters, or HTML boundaries. Perfect for long wallet addresses.</li><li>Manual override — Each slot has an "Allow manual input" checkbox. Enable it to type or paste directly into the textarea; disable it to revert to the last copied value. Edit on the fly when you need to test variants or fix formatting.</li><li>Live comparison — The MATCH / NOT MATCH badge updates in real time as you type, copy, or switch between tabs.</li></ol>
Designed for crypto, works for everything

Although built with crypto traders and DeFi users in mind, this is plain-text exact matching. Use it to verify URLs, order IDs, transaction hashes, PGP fingerprints, promo codes, or any snippet you need to cross-reference between two sources.

Privacy first - The extension does not collect, transmit, or store any data outside your local browser.

## Rankings

- #133,544 — Overall
- #103 — crypto
- #127 — earn crypto
- #130 — address

## Permissions and access

### Permissions

- `contextMenus`
- `storage`
- `activeTab`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

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Source: [Chrome-Stats](https://chrome-stats.com/d/crypto-address-checker)