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Developer & Business Tools

High-utility tools for developers, designers, and entrepreneurs. JSON formatting, Base64, QR codes, passwords, invoices, and meta tags.

8 tools 100% free No uploads
Developer

JSON Formatter

Beautify, minify, and validate JSON data with exact syntax error line reporting and interactive tree view.
Developer

Base64 Encoder / Decoder

Encode and decode Base64 strings and files with full UTF-8 Unicode support and URL-safe formatting options.
Developer

Meta Tag Generator

Generate optimized HTML meta tags with character counters and live Google search and social media card previews.
Developer

Color Picker & Palette

Pick colors, convert between HEX, RGB, and HSL, generate harmonious palettes, and verify WCAG contrast accessibility.
Developer

QR Code Generator

Create high-resolution QR codes for websites, Wi-Fi networks, vCard business cards, and UPI payments with custom colors and PNG/SVG export.
Developer

Password Generator

Generate strong, cryptographically secure random passwords using browser hardware entropy with custom character rules and strength meter.
Developer

Invoice Generator

Create professional, printable PDF invoices with custom branding, line items, taxes, discounts, and live preview.
Developer

Internet Speed Test

Check how fast your connection really is with a quick download, upload, and latency test that runs straight from this page.
Deep dive

Reliable Utilities for Coders, Designers & Founders

Modern development and digital entrepreneurship involve repetitive micro-tasks: validating an API JSON payload, creating an unexpiring Wi-Fi or UPI QR code, generating cryptographically secure credentials, checking WCAG color accessibility, and billing clients with itemized invoices.

Toolnova combines these essential utilities into a clean, zero-bloat platform without advertising trackers, paywalls, or third-party cookies.

Developer & Business Tools FAQ

Common questions about usage, privacy, limits, and browser compatibility.

Is my JSON payload or code sent to any server?

No. The JSON formatter and Base64 converters run entirely inside your browser JavaScript engine.

Do QR codes created here have expiration dates or redirects?

Never. These are direct, static QR codes that encode your data directly into the pixel matrix. They work forever with zero redirects.

How secure is the Password Generator?

It uses window.crypto.getRandomValues, drawing from your operating system cryptographic entropy pool for maximum security (never insecure Math.random).