Sigma Wire — Tech Guides and Free Online Tools

Guides, fixes and explainers across Windows, AI, hardware and the rest of tech — written so the answer comes first, not after ten paragraphs. Plus eighty-odd tools that run in your browser: no sign-up, no watermark, nothing to install.

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Free Online Tools

Eighty-odd tools that run in your browser and ask for nothing. No sign-up, no upload where the work can be done locally, and no watermark on anything.

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Image to URL Converter

Drop in an image, get a permanent direct link and a QR code for it. Our most used tool by a wide margin.

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What Windows Version Do I Have

Detects Windows 11 or 10 as the page loads, and tells you whether yours still gets security updates.

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Email Validator

Checks syntax, MX, SPF and DMARC, then tests the live mailbox behind the address.

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What Is My IP

Your public IP with the network, location and reverse DNS behind it, resolved instantly.
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Searchable, filterable, and free.

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Cross-Platform Compatible

Access all tools seamlessly across devices with our responsive design optimized for mobile, tablet, and desktop.

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User-Friendly Interface

Enjoy a clean, intuitive design that ensures a smooth user experience for beginners and experts alike.

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