chromext

A monorepo of free, open-source Chrome extensions for solo builders.

Why

I'm a solo builder. I ship products alone. Every extension I install is a trust decision — it can read my tabs, my clipboard, my network. The Chrome Web Store is full of closed-source extensions with "Read and change all data on all websites" permissions and no way to verify what they actually do.

So I build my own. Every extension in this repo:

• Requests only what it needs — no broad permissions, no "all websites"
• Makes zero external network calls — no analytics, no tracking, no telemetry
• Is inspectable in minutes — small codebases, plain JavaScript, no bundlers
• Ships on day one — built to pass Chrome Web Store review immediately

If you're a solo builder too, you can use these as-is, fork them, or read the source to see exactly how they work before you trust them.

Extensions

Extension	Description	Permissions
css-peek	Hover any element to see its CSS properties. Box model, fonts, colors. Click to copy selector.	activeTab, scripting
seo-shot	Instant on-page SEO snapshot. 12 checks, score out of 100. Pure DOM — no API.	activeTab, scripting
pasteguard	Stop pasting API keys and secrets into AI chats. Warns, masks, or blocks. 15 patterns across 20 AI sites.	storage, scripting, activeTab
google-translate-dark	Calm, very-dark theme for Google Translate. Toggle button + 8-color accent picker.	storage, scripting

Structure

chromext/
├── README.md
├── LICENSE
├── .gitignore
├── css-peek/                  # Each extension is self-contained
│   ├── README.md
│   ├── manifest.json
│   ├── content.js             # Hover inspector + tooltip
│   ├── content.css            # Tooltip styling
│   ├── background.js          # Service worker
│   ├── popup/                 # Toggle on/off
│   └── icons/
├── seo-shot/                  # Each extension is self-contained
│   ├── README.md
│   ├── manifest.json
│   ├── popup/
│   │   ├── popup.html
│   │   ├── popup.js           # 12 checks, scoring engine
│   │   └── popup.css
│   └── icons/
├── pasteguard/               # Each extension is self-contained
│   ├── README.md
│   ├── manifest.json
│   ├── patterns.js           # 15 regex detection rules
│   ├── content.js            # Paste interceptor + overlay
│   ├── content.css           # Warning dialog styling
│   ├── background.js         # Service worker, badge counter
│   ├── popup/                # Settings UI
│   └── icons/
└── google-translate-dark/
    ├── README.md
    ├── manifest.json
    ├── darkmode.css          # 406 exact Google DOM selectors
    ├── content.js            # Toggle button + accent injection
    ├── content.css           # Button animations
    ├── background.js         # Dynamic CSS injection
    ├── popup/                # Accent color picker
    └── icons/

Philosophy

• Minimal permissions — every extension requests only what it needs
• No data collection — zero tracking, zero analytics, zero network calls
• Manifest V3 — current Chrome extension standard
• MIT licensed — use, modify, ship freely
• Self-documenting — each extension has its own README

Publishing

All extensions are Chrome Web Store ready. See the landing page for descriptions and the privacy policy to link in the CWS dashboard.

Setup

Each extension is independent. Load any as an unpacked extension:

1. Chrome → chrome://extensions
2. Enable Developer mode
3. Load unpacked → select the extension directory (e.g. pasteguard/)

Or publish to the Chrome Web Store — each extension meets all review requirements: minimal permissions, no obfuscation, no remote code, clear functionality.