Free Security & Utilities Online
Generate passwords, check entropy, compute SHA/MD5/HMAC hashes, create QR codes, barcodes, and convert bases. Most tools run in your browser; a few AI tools send the image to a third-party service.
Password Generator
Generate cryptographically strong passwords with customizable entropy.
Password Strength Checker
Test password entropy and calculate estimated crack time.
UUID Generator
Generate version 4 UUIDs (Universally Unique Identifiers).
SHA-256 Generator
Compute SHA-256 cryptographic hashes for text or files.
SHA-512 Generator
Calculate 512-bit SHA-512 cryptographic hashes.
MD5 Hash Generator
Generate 128-bit MD5 checksums for strings and files.
File Hash Generator
Calculate SHA-256, SHA-512, SHA-1, and MD5 hashes of any file.
HMAC Generator
Generate HMAC (Hash-based Message Authentication Code) with secret keys.
Random Number Generator
Generate cryptographically random numbers within custom ranges.
QR Code Generator
Create customized QR codes for URLs, WiFi, contacts, and text.
Barcode Generator
Generate Code-128, EAN-13, and UPC standard barcodes.
Lorem Ipsum Generator
Generate placeholder dummy text by paragraphs, sentences, or words.
Number Base Converter
Convert numbers between Binary, Octal, Decimal, and Hexadecimal.
Binary Converter
Convert plain text into Binary code (0s and 1s) and back.
Hex Converter
Convert text to Hexadecimal string and Hex back to text.
Decimal Converter
Convert decimal numbers to binary, octal, hex, and ASCII characters.
Unix Timestamp Converter
Convert Unix epoch timestamps to human readable dates.
Color Picker
Pick colors visually and copy HEX, RGB, and HSL codes.
Unit Converter
Convert length, weight, temperature, digital storage, and speed.
Data URI Generator
Convert images, fonts, and files into inline Base64 data: URIs.