https://github.com/pass-with-high-score/check-subdomain
Free online developer tools. No signup required, 100% client-side processing.
https://github.com/pass-with-high-score/check-subdomain
image-base64 json-server nextjs otp-generator subdomain subdomain-scanner webhook webtool
Last synced: 5 months ago
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Free online developer tools. No signup required, 100% client-side processing.
- Host: GitHub
- URL: https://github.com/pass-with-high-score/check-subdomain
- Owner: pass-with-high-score
- License: mit
- Created: 2026-01-05T02:17:21.000Z (6 months ago)
- Default Branch: main
- Last Pushed: 2026-01-13T10:58:00.000Z (6 months ago)
- Last Synced: 2026-01-13T21:18:38.741Z (5 months ago)
- Topics: image-base64, json-server, nextjs, otp-generator, subdomain, subdomain-scanner, webhook, webtool
- Language: TypeScript
- Homepage: https://devtool.pwhs.app
- Size: 876 KB
- Stars: 2
- Watchers: 0
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# DevTools
Free online developer tools. No signup required, 100% client-side processing for most tools.
**Live Demo**: [pwhs.app](https://pwhs.app)
## Tools
| Tool | Description | Storage |
|------|-------------|---------|
| **Subdomain Scanner** | Discover subdomains using CT logs, VirusTotal, Shodan | Client-side |
| **OTP Generator** | Generate TOTP codes with key saving and password protection | Local Storage |
| **Base64 Image** | View/encode images to Base64 with drag & drop | Client-side |
| **Webhook Tester** | Receive and inspect webhook requests in real-time | Server |
| **JSON Server** | Host, validate, and share JSON data with mock APIs | Server |
| **Image Uploader** | Upload images and get shareable links | S3/R2 |
| **File Transfer** | Share any file with expiring download links | S3/R2 |
| **Time Capsule** | Lock files until a future date | S3/R2 |
| **Speech to Text** | Transcribe audio with word-level timestamps and seek | Server (Deepgram) |
| **YouTube Downloader** | Download YouTube videos and audio in various qualities | Server (ytdl-core) |
| **ANeko Builder** | Create custom skins for ANeko Reborn Android app | Client-side |
| **Anonymous Chat** | Real-time public chat with random usernames | PostgreSQL |
## Project Structure
```
devtool-fe/
├── src/ # Next.js frontend
│ ├── app/ # App router pages
│ ├── components/ # React components (incl. ChatWidget)
│ └── lib/ # Utilities
├── backend/ # NestJS backend API
│ └── src/
│ ├── chat/ # WebSocket chat gateway
│ ├── cleanup/ # Scheduled cleanup tasks
│ ├── database/ # Database service
│ └── storage/ # S3/R2 storage service
```
## Quick Start
### Frontend (Next.js)
```bash
# Install dependencies
bun install
# Run development server
bun run dev
```
Open http://localhost:3000
### Backend (NestJS)
```bash
cd backend
# Install dependencies
bun install
# Run development server
bun run start:dev
```
Backend runs on http://localhost:3001
## Environment Variables
### Frontend (.env)
```env
# VirusTotal API Key (free tier: 4 requests/minute)
VIRUSTOTAL_API_KEY=
# Shodan API Key (free tier: 100 credits/month)
SHODAN_API_KEY=
# Base URL
NEXT_PUBLIC_BASE_URL=https://yourdomain.com
# PostgreSQL Database
DATABASE_URL=postgresql://user:pass@host:5432/db
# S3/R2 Cloudflare Storage
S3_ENDPOINT=
S3_ACCESS_KEY=
S3_SECRET_KEY=
S3_BUCKET=
S3_PUBLIC_URL=
# Custom Public URLs (optional)
IMAGE_PUBLIC_URL=https://image.yourdomain.com
CAPSULE_PUBLIC_URL=https://capsule.yourdomain.com
# Time Capsule Settings (optional)
CAPSULE_MAX_FILE_SIZE=104857600
CAPSULE_MAX_LOCK_DAYS=365
CAPSULE_MIN_LOCK_DAYS=1
```
### Backend (.env)
```env
# PostgreSQL Database
DATABASE_URL=postgresql://user:pass@host:5432/db
# S3/R2 Storage
S3_ENDPOINT=
S3_ACCESS_KEY=
S3_SECRET_KEY=
S3_BUCKET=
# Deepgram API Key (for Speech to Text)
DEEPGRAM_API_KEY=
# Server Port
PORT=3001
```
## API Keys (Optional)
Configure in UI Settings panel:
- **VirusTotal** - [virustotal.com](https://www.virustotal.com/) - Subdomain enumeration
- **Shodan** - [shodan.io](https://shodan.io/) - Subdomain enumeration
## Deployment
### Frontend
Deploy to any platform that supports Next.js (Vercel, Netlify, etc.)
### Backend
```bash
cd backend
bun run build
bun run start:prod
```
Or use PM2:
```bash
pm2 start ecosystem.config.js
```
## License
MIT