Show HN: Bananarr – Peel Back the Tech Stack of Any Website

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Bananarr - Technology Profiler | Peel Back the Tech Stack of Any Website

Add to Chrome

Chrome Extension

Peel Back the Tech Stack of<br>Any Website

A gorgeous, blazing-fast, and offline-first technology profiler Chrome extension<br>to inspect any website's tech stack. No accounts, no bloat, pure speed.

Add to Chrome

Default keyboard shortcut:

Mac:

Windows:<br>Alt

shield_with_heart<br>No App Servers

bolt<br>Instant Scans

extension<br>Chrome Extension

lock<br>carlah.my

Carlah.my

Malaysia's premier certified pre-owned used car listings marketplace aggregator.

Bananarr.<br>BETA

Scanned in 1.4s

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☕ Programming Languages

Ruby

Programming Language<br>expand_more

🛥️ Backend Frameworks

Ruby on Rails

Backend MVC<br>expand_more

⚡ Frontend & JS Libraries

Hotwire Turbo

SPA Navigation<br>expand_more

Stimulus JS

DOM-driven<br>expand_more

🎨 UI & CSS Frameworks

Tailwind CSS

v4.0

carlah.my<br>v1.0.0

security<br>Privacy is Not a Feature, It's a Right

Why Offline-First Detection Wins.

Popular dev detectors send every domain you visit to external servers under the guise of "updating signature caches". This data is often packaged and sold to corporate databases to track internet tech trends.

Bananarr packages its matcher locally. It has no account system or app backend API, while active-tab header and DNS checks are used only for HTTP and hosting/IP evidence.

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No Remote Backend

The signature database and matching logic are packaged locally inside the extension. No app server or user account is required.

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Lightning Fast

Signatures match locally against in-memory data, so scans complete within seconds on a typical page.

bar_chart<br>Dev Tools Privacy Comparison

Bananarr

Privacy-First stack detector

Bundled Signatures<br>No Analytics<br>No Ads

📊

BuiltWith / Wappalyzer

Corporate stack trackers

Sends URLs<br>Data Tracking

Loaded with Features.

Don't let the lightweight size fool you. Bananarr is custom-tailored to pack everything a modern developer needs.

bolt

Dual-World Scan

Scans DOM selectors, scripts, links, images, cookies, and meta tags in the isolated extension world, then reads page-defined window globals from the main world.

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Vibrant Color Categories

Instantly groups detected tech across color-coded categories, from languages, backend, frontend, CSS, CMS, and e-commerce to hosting, analytics, security, payments, and engagement widgets.

cloud

Local Signature & IP Engines

Bundled signatures cover frameworks, payments, CDNs, hosting, and libraries. Active-tab header and DNS checks feed a local IP range database for AWS, Cloudflare, Fastly, Akamai, Google Cloud, Azure, and more.

fact_check

Every Detection Comes with Evidence

Every technology match is paired with the evidence that triggered it, including meta tags, script, link, and image URLs, globals, cookies, headers, DOM elements, IP ranges, or implied relationships.

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No Account Requirements

No sign-ups, accounts, trials, upgrade prompts, or query quotas. Install the extension and inspect the active tab immediately.

extension

Modern Extension Security

Built on modern Chrome extension rules with tab-scoped scripting permissions, plus a narrow DNS host permission for IP resolution. Scans only the current active tab when you run it.

How it Works

A simple, highly secure pipeline that finishes in a fraction of a frame.

🔔<br>Trigger Scan

Click the Bananarr icon or press

Mac:

Windows:<br>Alt<br>. Bananarr requests tab scripting permissions dynamically.

🔍<br>Dual-World Injection

The extension injects a DOM scanner and a globals scanner to compile metadata, selectors, scripts, and variables from the tab.

🎯<br>Instant Offline Match

The scanner sends data back to the popup, which matches against the signature list and lists results organized by category.

Get Started with Bananarr Today

Install Bananarr from the Chrome Web Store and instantly start profiling technology stacks.

Add to Chrome

Default keyboard shortcut:

Mac:

Windows:<br>Alt

🍌

Shortcut Triggered!

You pressed

Mac:

Windows:<br>Alt<br>. Once installed, this opens the extension instantly.

extension bananarr chrome tech stack backend

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