About OSINT Toolkit

OSINT Toolkit is a set of lightweight tools running entirely in the browser for open-source reconnaissance, collection and analysis. Each tool is designed to be fast, transparent and privacy-respecting — by default sensitive data is not sent to remote servers.

Principles

• Privacy-first: client-side processing when possible, no accidental uploads.
• Transparency: open source with predictable tool behaviour.
• Zero setup: ready-to-use browser tools with no accounts or complex installs.
• Pivot-friendly: outputs are easy to export and link for further investigation.

Who it's for

OSINT researchers, digital investigators, journalists, security analysts and anyone who needs quick, reliable utilities to collect and normalize public information about domains, emails, images and web resources.

What's included

The toolkit provides, among others, the following tools:

• Brand Impersonation Explorer
• Certificate Transparency lookup
• DNS lookup
• Email OSINT
• EXIF / metadata extractor
• Google Dork Builder
• Image fingerprint & reverse image search
• Screenshot intelligence and entity extraction
• URL redirect analyzer
• Username mapper
• Wayback / cache query

Why I built it

Many online OSINT tools require uploads or rely on external services, creating privacy and exposure risks. OSINT Toolkit offers alternatives that keep data under the operator's control, leveraging modern browser APIs to provide advanced capabilities without sacrificing confidentiality.

Technical stack

• Next.js (App Router) + React
• TypeScript and client components
• Tailwind CSS for styling
• Web Crypto API, File API and Web Workers for local processing
• CSV/JSON export options and local downloads via File API
• Deployable as a static site for privacy-friendly hosting

To contribute, report issues or propose features, please send me an email at andrea@andreafortuna.org.