LZ

LinkoZen

Free Security & Privacy Tools

100% Client-Side · No Data Uploaded

Free Online Security & Privacy Tools

A growing collection of free, open-source utilities to help you stay secure online. Every tool runs entirely in your browser — your data is never uploaded, stored, or shared with anyone.

Privacy First
Instant Results
Open Source

Available Tools

Click any tool to get started — all free, no sign-up required.

2FA Tools

Verify TOTP tokens, generate 2FA secrets with QR codes — all computed locally in your browser.

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IP Lookup

Dual-stack IPv4 & IPv6 detection, geolocation map, privacy audit, WebRTC leak test, and deep analysis.

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Temp Mail

Generate disposable email addresses instantly. Protect your real inbox from spam, newsletters, and sign-up tracking.

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Password Generator

Generate strong, cryptographically-random passwords with customizable length, character sets, and entropy analysis.

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Image Converter

Convert between WebP, PNG, and JPG formats instantly. Batch processing, quality control — all in your browser.

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Text Cleaner

Remove spaces, trim lines, merge blank lines, convert to single line — instant formatting with real-time metrics.

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ICO Icon Generator

Convert images to ICO format for favicons and app icons. Multiple sizes, pure client-side — no uploads.

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AI Avatar Generator

Generate realistic portraits or cartoon avatars with AI. Free, no sign-up — just describe and create.

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Your Data Stays Yours

All tools process data entirely in your browser. Nothing is ever uploaded to a server, logged, or shared with third parties.

Open Source & Transparent

Every line of code is inspectable. No hidden trackers, no obfuscated logic — you can verify exactly what each tool does.

Blazing Fast

No server round-trips. Everything runs on your device using Web Crypto API and modern browser capabilities — results appear instantly.