hackerdnatoolkit

Free Security Tools

Fast, private, browser-based tools for hackers and CTF players. Everything runs on your device - no signup, nothing uploaded.

Encoding & Decoding

Base64 Decode & Encode Paste Base64 to decode it, or type text to encode. Everything runs in your browser. URL Decode & Encode Decode %XX percent-encoding or encode text for safe use in URLs - all in your browser. Hex to ASCII Converter Paste hex bytes to read them as text, or convert text to hex - entirely in your browser. ROT13 Decoder & Encoder Apply ROT13 or any Caesar shift to text instantly - decoding and encoding are the same click.

Web & Auth

JWT Decoder & Debugger Paste a JWT to read its header and claims. Decoding happens in your browser - tokens never leave your device.

Offensive

Reverse Shell Generator Set your listener IP and port, pick a language, and copy a ready one-liner - built for your own authorized labs.

Passwords & Hashes

Hash Identifier Paste a hash to identify its likely algorithm by length and format - all in your browser. MD5 Hash Generator & Cracker Hash any text with MD5, or crack a hash against thousands of common passwords and CTF answers - all in your browser, nothing uploaded.

Linux & Network

Crontab Expression Editor Type a cron expression to read it in plain English and preview the next scheduled runs - in your browser. Nmap Cheat Sheet & Command Builder Pick your scan options to build a ready Nmap command, and browse the flag reference - in your browser.

Practice on real targets

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