# urlscan Docs

> urlscan is a web-based platform to investigate malicious websites and domains.

## Table of contents

 - [urlscan.io - A sandbox for the web](https://docs.urlscan.io/about.md)
 - [API Changelog](https://docs.urlscan.io/changelog.md)
 - [API Use Best Practices](https://docs.urlscan.io/pages/api-best-practices.md)
 - [APIs - Introduction](https://docs.urlscan.io/pages/api-intro.md)
 - [Brand Detection](https://docs.urlscan.io/pages/brand-detection.md)
 - [Certificate Search](https://docs.urlscan.io/pages/certificates-search.md)
 - [API Error Codes](https://docs.urlscan.io/pages/error-codes.md)
 - [Frequently Asked Questions](https://docs.urlscan.io/pages/faq.md)
 - [Hostname History API](https://docs.urlscan.io/pages/hostname-history.md)
 - [Hostname API](https://docs.urlscan.io/pages/hostname-search.md)
 - [Incidents Search](https://docs.urlscan.io/pages/incidents-search.md)
 - [System Labels](https://docs.urlscan.io/pages/labels.md)
 - [Quickstart Guide](https://docs.urlscan.io/guides/quickstart.md)
 - [API Integrations](https://docs.urlscan.io/pages/api-integrations.md)
 - [API Rate Limits](https://docs.urlscan.io/pages/api-rate-limits.md)
 - [urlscan Pro](https://docs.urlscan.io/index.html.md)
 - [CLI - Introduction](https://docs.urlscan.io/pages/cli-intro.md)
 - [Live Scanning](https://docs.urlscan.io/pages/livescanning.md)
 - [Files Search](https://docs.urlscan.io/pages/files-search.md)
 - [Notifications Search](https://docs.urlscan.io/pages/notifications-search.md)
 - [urlscan Pro Changelog](https://docs.urlscan.io/pages/pro-changelog.md)
 - [urlscan Pro - Use Cases](https://docs.urlscan.io/pages/pro-use-cases.md)
 - [urlscan.io Result API Reference](https://docs.urlscan.io/pages/result-api-reference.md)
 - [Saved Searches](https://docs.urlscan.io/pages/saved-searches.md)
 - [Website Scans Search Reference](https://docs.urlscan.io/pages/search-api-reference.md)
 - [General Instructions](https://docs.urlscan.io/pages/search-general.md)
 - [TLS Certificates](https://docs.urlscan.io/pages/source-certificates.md)
 - [File Downloads](https://docs.urlscan.io/pages/source-files.md)
 - [Hostnames](https://docs.urlscan.io/pages/source-hostnames.md)
 - [Website Scans](https://docs.urlscan.io/pages/source-scans.md)
 - [Structure Search](https://docs.urlscan.io/pages/structure-search.md)
 - [Subscriptions](https://docs.urlscan.io/pages/subscriptions.md)
 - [urlscan Observe](https://docs.urlscan.io/pages/urlscan-observe.md)
 - [urlscan Pro](https://docs.urlscan.io/pages/urlscan-pro.md)
 - [User Account Help](https://docs.urlscan.io/pages/user-accounts.md)
 - [Scan Visibility Levels](https://docs.urlscan.io/pages/visibility.md)
 - [Visual Search](https://docs.urlscan.io/pages/visual-search.md)
 - [urlscan.io APIs](https://docs.urlscan.io/apis/urlscan-openapi.md)