# Link Checker

A recursive link checker that crawls websites to find broken links and redirects. It helps maintain website health by identifying:

- Broken links (HTTP 4xx, 5xx status codes)
- Network/DNS errors
- HTTP redirects (3xx status codes)

## Features

- Recursive crawling of websites
- Handles both absolute and relative URLs
- Detects and reports HTTP redirects
- Shows progress during scanning
- Normalizes URLs for consistent checking
- Stays within the same domain
- Detailed reporting of issues found

## Installation

Make sure you have Go installed (version 1.16 or later), then run:

```bash
go install forgejo.ewintr.nl/ewintr/linkchecker@latest
```

## Usage

Run the link checker by providing a starting URL:

```bash
linkchecker -url="https://example.com"
```

The tool will:
1. Crawl all pages on the same domain
2. Check all links found (both internal and external)
3. Display progress during the scan
4. Generate a report showing:
   - Total pages checked
   - List of redirected links
   - List of broken links
   - Summary statistics

## Example Output

```
Checking page 1: https://example.com
Checking page 2: https://example.com/about
...

Total pages checked: 15

Redirects found:
- http://example.com/old-page (Redirect 301 -> https://example.com/new-page)
- http://example.com/blog (Redirect 302 -> https://blog.example.com)

Broken links found:
- https://example.com/missing-page (Status: 404)
- https://example.com/server-error (Status: 500)
- https://external-site.com/broken (Error: connection refused)

Total issues: 5 (2 redirects, 3 broken)
```