Themezer Pack Scraper

A Node.js scraper for downloading Nintendo Switch theme packs from Themezer.net.

Features

• Scrapes theme pack listings from Themezer
• Downloads theme files and preview images
• Saves metadata for each pack
• Concurrent downloads with rate limiting
• Resume support (skips already downloaded packs)

Requirements

• Node.js (v12 or higher)
• npm packages:
  • node-fetch
  • cheerio

Installation

npm install node-fetch cheerio

Usage

node scraper.js

The scraper will:

1. Fetch theme packs from up to 135 pages
2. Download each pack's theme file and preview image
3. Save metadata in info.json for each pack
4. Generate a summary file themezer_summary.json

Output Structure

themezer_packs/
├── Theme_Name_1/
│   ├── theme.zip
│   ├── preview.png
│   └── info.json
├── Theme_Name_2/
│   ├── theme.zip
│   ├── preview.jpg
│   └── info.json
└── ...
themezer_summary.json

Configuration

Edit the main() function to adjust:

• maxPages: Number of pages to scrape (default: 135)
• download: Set to false to only fetch metadata without downloading files

Rate Limiting

• Concurrent downloads limited to 8 simultaneous requests

• 1 second delay between page scrapes

• 10 second timeout per request

• Existing packs are automatically skipped

• Invalid characters in filenames are replaced with underscores

• Failed downloads are logged but don't stop the scraper