Ever opened a new codebase and felt completely lost? CodeFlow turns any GitHub repository or local codebase into an interactive architecture map in seconds.
- No installation required — runs entirely in your browser
- No data collection — your code never leaves your machine
- No accounts — just paste a URL or select local files and go
- Works offline — analyze local files without internet
⚡ Paste URL / Select Files → See Architecture → Make Better Decisions
See how your files connect at a glance. Click any node to highlight its dependencies. Drag, zoom, and explore.
"If I change this file, what breaks?" — CodeFlow answers this instantly. Select any file and see exactly how many files would be affected by changes.
Know who owns what. See the top contributors for any file based on git history. Perfect for code reviews and knowing who to ask.
Automatic detection of:
- Hardcoded secrets & API keys
- SQL injection vulnerabilities
- Dangerous
eval()usage - Debug statements in production code
Automatically identifies:
- Singleton patterns
- Factory patterns
- Observer/Event patterns
- React custom hooks
- Anti-patterns (God Objects, high coupling)
Get an instant A-F grade for your codebase based on:
- Dead code percentage
- Circular dependencies
- Coupling metrics
- Security issues
Color files by commit frequency to see which parts of your codebase are most actively developed.
Paste a PR URL to see exactly which files it affects and calculate the blast radius of proposed changes.
Analyze code directly from your computer without uploading to GitHub:
- Privacy First: Your code never leaves your machine
- Offline Support: Works without internet connection
- Drag & Drop: Simply drag files or folders to analyze
- Folder Scanning: Recursively analyze entire project structures
- Instant Results: All processing happens in your browser
Your code stays on your machine. CodeFlow:
- ✅ Runs 100% in the browser
- ✅ Makes API calls directly from your browser to GitHub
- ✅ Never stores your code or tokens
- ✅ Works with private repos (just add your token locally)
- ✅ No analytics or tracking
Your GitHub token (if used) is only stored in your browser's memory and is cleared when you close the tab.
Just visit CodeFlow and paste any GitHub URL.
# Clone the repo
git clone https://github.com/braedonsaunders/codeflow.git
# That's it! Just open index.html in your browser
open index.htmlNo build process. No dependencies. No npm install. It's just one HTML file.
You can now analyze code directly from your local machine without uploading to GitHub:
- Open CodeFlow in your browser
- Click the "📁 Local Files" button
- Select the folder or files you want to analyze
- CodeFlow will process them entirely in your browser
Perfect for:
- Private projects you don't want to upload
- Offline development
- Quick local analysis before committing
- Working with sensitive code
Just paste: facebook/react
Or full URL: https://github.com/facebook/react
- Create a GitHub Personal Access Token with
reposcope - Paste it in the Token field
- Analyze your private repos
Click the "📁 Local Files" button to analyze code from your computer:
- Folder Analysis: Select a folder to analyze all supported files recursively
- File Selection: Choose specific files to analyze
- Drag & Drop: Drag files or folders directly onto the page
All processing happens locally in your browser - nothing is uploaded.
After analysis, click 🔗 to copy a shareable link. Anyone can re-run the same analysis.
Export your analysis in multiple formats for further processing:
-
JSON Report - Complete analysis data including:
- Repository metadata and health score
- All files with functions, dependencies, and churn data
- Complete function statistics with callers and usage metrics
- Security issues, patterns, and architecture issues
- Duplicate code detection and layer violations
- Suggestions and recommendations
- Language breakdown and folder structure
Perfect for programmatic analysis, CI/CD integration, or custom reporting tools.
-
Markdown Report - Human-readable formatted report
-
Plain Text Report - Simple text format
-
SVG Image - Export the dependency graph visualization
-
Raw JSON - Simplified data export
Click the 📤 Export button in the top bar after analysis to access all export options.
CodeFlow extracts functions and analyzes dependencies for:
| Language | Extensions |
|---|---|
| JavaScript | .js, .jsx |
| TypeScript | .ts, .tsx |
| Python | .py |
| Java | .java |
| Go | .go |
| Ruby | .rb |
| PHP | .php |
| Vue | .vue |
| Svelte | .svelte |
| Rust | .rs |
| C | .c, .h |
| C++ | .cpp, .cc, .cxx, .hpp, .hh, .hxx |
| C# | .cs |
| Swift | .swift |
| Kotlin | .kt, .kts |
| Scala | .scala, .sc |
| Groovy | .groovy, .gvy |
| Elixir | .ex, .exs |
| Erlang | .erl, .hrl |
| Haskell | .hs, .lhs |
| Lua | .lua |
| R | .r, .R |
| Julia | .jl |
| Dart | .dart |
| Perl | .pl, .pm |
| Shell | .sh, .bash, .zsh, .fish |
| PowerShell | .ps1, .psm1, .psd1 |
| F# | .fs, .fsi, .fsx |
| OCaml | .ml, .mli |
| Clojure | .clj, .cljs, .cljc |
| Elm | .elm |
| VBA | .vba, .bas, .cls, .xlsm, .xlsb, .xlam |
| Mode | Description |
|---|---|
| 📁 Folder | Color by directory structure |
| 🏗️ Layer | Color by architectural layer (UI, Services, Utils, etc.) |
| 🔥 Churn | Color by commit frequency (hot spots) |
| 💥 Blast | Color by impact when a file is selected |
| Key | Action |
|---|---|
Enter |
Analyze repository |
+ / - |
Zoom in/out |
Escape |
Close modal |
GitHub API has rate limits:
- Without token: 60 requests/hour
- With Personal Access Token: 5,000 requests/hour
- With GitHub App: 5,000 requests/hour per installation
- Create a GitHub Personal Access Token with
reposcope - Paste it in the Token field
- Analyze your private repos
For teams and organizations, GitHub App provides better security and higher rate limits:
- Create a GitHub App with repository permissions
- Install the app on your organization or personal account
- Generate an installation access token
- Paste the token in the Token field
Benefits of GitHub App:
- ✅ Fine-grained permissions control
- ✅ Revocable access per installation
- ✅ Higher rate limits (5,000 requests/hour)
- ✅ Audit logging and security monitoring
- ✅ No need to share personal credentials
For larger repositories or team usage, we recommend using GitHub App authentication.
┌─────────────────────────────────────────────────┐
│ CodeFlow │
├─────────────────────────────────────────────────┤
│ ┌──────────┐ ┌──────────┐ ┌──────────┐ │
│ │ Parser │ │ GitHub │ │ D3 │ │
│ │ Module │ │ API │ │ Graph │ │
│ └──────────┘ └──────────┘ └──────────┘ │
│ │ │ │ │
│ └──────────────┼──────────────┘ │
│ │ │
│ ┌────────▼────────┐ │
│ │ React App │ │
│ │ (Single File) │ │
│ └─────────────────┘ │
└─────────────────────────────────────────────────┘
Zero dependencies to install. Everything runs from CDNs:
- React 18
- D3.js 7
- Babel (for JSX)
We love contributions! Here's how:
- Fork the repo
- Make your changes to
index.html - Test locally (just open in browser)
- Submit a PR
- Add support for more languages
- Improve function extraction regex
- Add more design pattern detection
- Export to different formats (PNG, PDF)
- Add code complexity metrics
Q: How does it work without a backend?
CodeFlow runs entirely in your browser. It calls the GitHub API directly from your browser and processes everything client-side.
Q: Is my code safe?
Yes. Your code is fetched directly from GitHub to your browser. Nothing is sent to any server we control. Check the source — it's one file!
Q: Can I use it offline?
Yes! With the new Local Files feature, you can analyze code from your computer without any internet connection. Just click the "📁 Local Files" button and select your files. All processing happens entirely in your browser.
Q: Why is analysis slow?
We make individual API calls for each file to get content. With a token, you get higher rate limits and faster analysis.
Q: How accurate is the dependency analysis?
It's based on function name matching, so it may miss some dynamic imports or renamed imports. It's designed for a quick overview, not 100% accuracy.
If you find CodeFlow useful, please ⭐ the repo!
MIT License — use it however you want.
Built with ⚡ by developers, for developers
Stop guessing. Start seeing.