Practical tools for developers, files, and everyday dates

Toolnova runs lightweight utilities in your browser whenever possible. No accounts are required for the core toolkit—start with JSON formatting, timestamps, time zones, PDF merge, and image compression.

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Markdown Preview

Write Markdown on the left and see the rendered preview on the right in your browser.

JSON Formatter

Format, validate, and minify JSON in your browser.

UUID Generator

Generate random UUID v4 identifiers instantly.

Base64 Encode / Decode

Encode or decode Base64 with proper UTF-8 handling.