Free Online Developer Tools

11 essential tools for developers. No signup required. Instant use. All client-side — your data never leaves your browser.

✓ 100% Free
✓ No Signup
✓ Client-Side
✓ Mobile-Friendly

🎲 Generators

Create random data for testing, development, and prototyping.

🔑

UUID Generator

Generate random UUIDs (v1, v4) and GUIDs instantly. Bulk generation supported.

Generate UUID →
🔐

Random Password Generator

Create strong, secure passwords with customizable length and character sets.

Generate Password →
🏦

Random IBAN Generator

Generate valid random IBAN numbers for testing payment systems. Multiple countries supported.

Generate IBAN →
📱

Random IMEI Generator

Generate valid IMEI numbers for mobile device testing and development.

Generate IMEI →
🌐

MAC Address Generator

Generate random MAC addresses for network testing. Custom vendor prefixes available.

Generate MAC →
📝

Lorem Ipsum Generator

Generate placeholder text for mockups and designs. Paragraphs, sentences, or words.

Generate Text →
🔒

Hash Generator

Generate MD5, SHA-1, SHA-256, SHA-512 hashes. Verify file integrity and checksums.

Generate Hash →

🔄 Converters

Transform data between different formats and encodings.

📦

Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 to plain text. Supports file encoding.

Convert Base64 →
🔢

Hex to ASCII Converter

Convert hexadecimal strings to ASCII text and vice versa. Binary support included.

Convert Hex →

✅ Validators

Validate data formats, checksums, and syntax.

💳

Credit Card Validator

Validate credit card numbers using the Luhn algorithm. BIN lookup included.

Validate Card →

📐 Formatters

Format, beautify, and minify code and data.

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JSON Formatter & Validator

Format, beautify, minify, and validate JSON. Tree view and syntax highlighting.

Format JSON →