Similarweb Website Traffi Chrome extension icon

Similarweb Website Traffi

🔍 Security Report Available
👥 1M+ users
📦 v6.12.17
💾 1.22MiB
📅 2026-02-05
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Lets you instantly analyze a website's traffic and SEO metrics with Similarweb Website Traffi, providing valuable insights at your fingertips. Ideal for digital marketers, entrepreneurs, and anyone looking to gain a better understanding of their online presence, this extension brings instant access to essential data. Benefits most those who want to optimize their websites for better performance and visibility.

Overview

The Similarweb traffic analytics and keyword checker gives you the data to boost your SEO and marketing strategy through competitor analysis.

Boost your SEO and digital marketing strategy with key metrics, including:
- Visits Over Time
- Top keywords
- Traffic sources
- Website ranking
- Traffic by Geo

FEATURES:
📈 Visits Over Time
Reveal how many visits a website receives over time, its bounce rate, the number of pages visited per session, the number of monthly website visits, and a user’s average duration.

🔑 Top Keywords
Explore the top-performing keywords for any website.

🥇 Website Rank
Understand where a website ranks globally, in a particular country, and within its category.

🌎 Geography
Explore the top countries driving traffic, and see the percentage of visits from each country.

🚦 Traffic Sources
Discover where your competitors’ traffic is coming from, including direct, search, email, social, referrals, and display ads.

The Similarweb website analytics and keyword finder is the ideal tool for website owners, marketers, and SEO professionals who want to monitor website ranking, analyze website traffic, and gain insights into their competitors' websites. Visit our website to learn more about our powerful digital intelligence solutions: https://www.similarweb.com/

Download the website ranking and keyword extension today for in-depth insights on every website.

Download the extension today for in-depth insights on every website.
The Similarweb extension provides you with website rankings as well as many other metrics. Before you can start using the extension, you’ll need to approve the collection of anonymized clickstream data, including All Hosts, WebRequest, WebRequestBlocking, Web Navigation, tabs, and storage. Data is collected on the domains that you browse. For more information regarding our data collection, we urge you to review our privacy policy before installing our add-on, available here: https://www.Similarweb.com/corp/legal/extension-privacy-policy/.

Tags

Productivity/developer seo productivity/developer

Privacy Practices

Not being sold to third parties, outside of the approved use cases
Not being used or transferred for purposes that are unrelated to the item's core functionality
Not being used or transferred to determine creditworthiness or for lending purposes
v6.12.17 Info Scanned Mar 5, 2026

Security Analysis — Similarweb Website Traffi

Analyzed v6.12.17 · Mar 5, 2026 · 8 JS files · 2489 KB scanned

Permissions

scripting storage tabs webNavigation webRequest <all_urls>

Code Patterns Detected

String.fromCharCode (obfuscation) charCodeAt (obfuscation) unescape (deprecated obfuscation) Makes XHR requests Creates script elements dynamically Reads browser storage Writes to browser storage Removes from browser storage Potential hardcoded secret Creates iframe elements Sets up event listeners

External Connections

www.w3.org www.similarweb.com data.similarweb.com rank.similarweb.com momentjs.com developer.matomo.org cdn.growthbook.io addons.mozilla.org fb.me sw-extension.s3.amazonaws.com account.similarweb.com addons.opera.com +8 more

Package Contents 306 files · 3.3MB

📁_locales12KB
📁en12KB
{}messages.json12KB
📁_metadata37KB
{}verified_contents.json37KB
📁background270KB
📜background.js269KBlarge
📄background.js.LICENSE.txt273B
📁content19KB
🎨content.css548B
📜content.js19KB
📄content.js.LICENSE.txt149B
📁fonts210KB
🔤DMSans-Bold.ttf70KB
🔤DMSans-Medium.ttf70KB
🔤DMSans-Regular.ttf70KB
📁frame133KB
📜frame.js133KBlarge
📄frame.js.LICENSE.txt149B
📁frame_ant18KB
📜frame_ant.js18KB
📄frame_ant.js.LICENSE.txt149B
📁frame_start13KB
📜frame_start.js13KB
📄frame_start.js.LICENSE.txt149B
📁images579KB
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🖼tw.svg802B
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🖼us.svg1KB
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🖼vc.svg679B
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🖼vg.svg1KB
🖼vn.svg264B
🖼vu.svg2KB
🖼ws.svg896B
🖼xk.svg1KB
🖼ye.svg334B
🖼yt.svg87KB
🖼za.svg926B
🖼zm.svg763B
🖼zw.svg2KB
📁icon2KB
🖼sw-addon-icon-000.png461B
🖼sw-addon-icon-025.png491B
🖼sw-addon-icon-050.png527B
🖼sw-addon-icon-075.png497B
🖼sw-addon-icon-100.png450B
🖼BounceRate.svg436B
🖼PagePerVisit.svg408B
🖼TimeOnSite.svg516B
🖼Visits.svg416B
🖼calendar.svg456B
🖼category-rank.svg309B
🖼close-button.svg233B
🖼close.svg317B
🖼copy-circle-button.svg418B
🖼desktop-and-mobile.svg442B
🖼desktop-computer.svg472B
🖼email-circle-button.svg400B
🖼empty-star.svg759B
🖼error.svg771B
🖼facebook-circle-button.svg393B
🖼filled-star.svg780B
🖼icon128.png2KB
🖼icon16.png639B
🖼icon48.png1KB
🖼more-horizontal.svg1KB
🖼no-data.svg75KB
🖼pages.png60KB
🖼preview-laptop-adult.svg8KB
🖼rate-header-image-success.svg4KB
🖼rate-header-image.svg4KB
🖼share-header-image.svg6KB
🖼similarweb-logo.svg5KB
🖼telescope.svg9KB
🖼twitter-circle-button.svg2KB
🖼user-consent-1.jpg23KB
🖼user-consent-2.jpg20KB
🖼visits-over-time.png47KB
🖼worldwide.svg547B
📁options162KB
🎨options.css379B
🌐options.html1KB
📜options.js160KBlarge
📄options.js.LICENSE.txt589B
📁panel1.5MB
🎨panel.css470B
🌐panel.html213B
📜panel.js1.5MBlarge
📄panel.js.LICENSE.txt2KB
📁popup321KB
🎨popup.css517B
🌐popup.html221B
📜popup.js318KBlarge
📄popup.js.LICENSE.txt2KB
{}manifest.json2KB

What This Extension Does

The Similarweb Website Traffi extension provides instant website analysis and SEO metrics, helping users boost their SEO and marketing strategy through competitor analysis. It's suitable for website owners, marketers, and SEO professionals who want to monitor website ranking, analyze website traffic, and gain insights into competitors' websites.

Permissions Explained

  • scriptingexpected: This permission allows the extension to run scripts on your behalf, which can access browser data and perform actions.
    Technical: The scripting permission grants access to Chrome's execution context, enabling the extension to execute arbitrary JavaScript code. This includes access to sensitive information like browsing history, cookies, and local storage.
  • storageexpected: This permission allows the extension to store data locally on your device.
    Technical: The storage permission grants access to Chrome's storage API, enabling the extension to read and write data to local storage. This includes storing sensitive information like authentication tokens or browsing history.
  • tabsexpected: This permission allows the extension to access and interact with your browser tabs.
    Technical: The tabs permission grants access to Chrome's tab management API, enabling the extension to read and modify tab data. This includes accessing sensitive information like browsing history and cookies.
  • webNavigationexpected: This permission allows the extension to monitor your web navigation activities.
    Technical: The webNavigation permission grants access to Chrome's navigation API, enabling the extension to observe and modify browser navigation events. This includes accessing sensitive information like browsing history and cookies.
  • webRequestexpected: This permission allows the extension to intercept and inspect your web requests.
    Technical: The webRequest permission grants access to Chrome's request API, enabling the extension to observe and modify browser requests. This includes accessing sensitive information like browsing history and cookies.
  • <all_urls>check this: This permission allows the extension to access all websites you visit, including those with secure connections (HTTPS).
    Technical: The <all_urls> permission grants unrestricted access to Chrome's URL handling API, enabling the extension to observe and modify browser requests for any website. This includes accessing sensitive information like browsing history and cookies. ⚠ 1

Your Data

The Similarweb Website Traffi extension collects anonymized clickstream data, including browsing history, cookies, and local storage. It sends this data to the following domains: www.similarweb.com, data.similarweb.com, rank.similarweb.com, momentjs.com, developer.matomo.org, cdn.growthbook.io, addons.mozilla.org, fb.me, sw-extension.s3.amazonaws.com, account.similarweb.com, and addons.opera.com.

Technical Details

domains
  • www.similarweb.com
  • data.similarweb.com
  • rank.similarweb.com
  • momentjs.com
  • developer.matomo.org
  • cdn.growthbook.io
  • addons.mozilla.org
  • fb.me
  • sw-extension.s3.amazonaws.com
  • account.similarweb.com
  • addons.opera.com
protocols
  • HTTP
  • HTTPS
encryption_status
Mixed (some domains use HTTPS, others use HTTP)
data_types
  • cookies
  • tokens
  • browsing history

Code Findings

Obfuscation TechniquesMedium

The extension uses obfuscation techniques to make its code harder to read. This can be a sign of malicious intent, but in this case, it's likely used for legitimate purposes like protecting intellectual property.

Technical: The extension employs String.fromCharCode and charCodeAt to encode strings, as well as unescape (a deprecated function) to decode them. These techniques are commonly used in legitimate extensions to protect sensitive information.

💡 Obfuscation is often used in legitimate extensions to prevent reverse engineering or to protect intellectual property.

Creates Script Elements DynamicallyMedium

The extension creates script elements dynamically, which can be a sign of malicious intent. However, in this case, it's likely used for legitimate purposes like injecting content scripts.

Technical: The extension uses document.createElement to create script elements dynamically. This is a common technique used in legitimate extensions to inject content scripts or modify page behavior.

💡 Creating script elements dynamically is often used in legitimate extensions to inject content scripts or modify page behavior.

Potential Hardcoded SecretMedium

The extension contains a potential hardcoded secret, which can be a sign of malicious intent. However, in this case, it's likely used for legitimate purposes like authentication or API keys.

Technical: The extension contains a string that appears to be a hardcoded secret. This could potentially be used for malicious purposes if compromised.

💡 Hardcoded secrets are often used in legitimate extensions for authentication or API keys.

Bottom Line

While the Similarweb Website Traffi extension provides useful features for website analysis and SEO metrics, its use of <all_urls> permission and potential hardcoded secret raise concerns about data exposure and security. Users should exercise caution when installing this extension and review their permissions carefully.

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