Developer Tools

Free, fast, and privacy-friendly tools for developers and AI engineers. No signup, no tracking, everything runs in your browser.

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JSON Formatter & Validator

Data

Format, validate, and minify JSON data with syntax highlighting and error detection.

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LLM Token Counter

AI/LLM

Count tokens for GPT, Claude, and Llama models with multi-model tiktoken support.

B64

Base64 Encode/Decode

Encoding

Encode and decode text and files to/from Base64 format.

%

URL Encode/Decode

Encoding

Encode and decode URL components for safe web usage.

⏰

Cron Expression Generator

DevOps

Visual cron expression builder with next execution time preview.

MD

Markdown to HTML

Content

Convert Markdown to HTML with live preview and syntax highlighting.

#!

Hash Generator

Security

Generate SHA-256, SHA-512, SHA-1, and MD5 hashes instantly.

/.*/

Regex Tester

Data

Test and debug regular expressions with live matching and highlighting.

🎨

Color Converter

Design

Convert colors between HEX, RGB, and HSL with live preview.

ID

UUID Generator

Data

Generate UUID v4 identifiers. Bulk generate up to 25 at once.

JWT

JWT Decoder

Security

Decode and inspect JWT tokens. View header, payload, and expiration.

🕒

Timestamp Converter

Data

Convert Unix timestamps to human-readable dates and vice versa.

12 tools available · More coming every week