AllTools.dev is a modern, fast, free online toolkit built for people who need quick, accurate calculators and converters without signing up, creating an account, or wading through cluttered interfaces. The platform offers 500+ tools across finance (mortgage calculators, loan amortization, compound interest, currency conversion, debt payoff, retirement planning), health (BMI, calorie needs, pregnancy tracking, ideal weight, body composition), math (scientific, statistical, geometric, percentage, fraction), science and engineering, date and time utilities, unit conversions (volume, length, temperature, power, area), developer utilities (JSON, regex, JWT, hashing), and interactive math and algorithm visualizations. Every tool is free and works instantly in the browser. No accounts, no paywalls, no sign-in walls, no data collection beyond standard analytics. Calculations happen client-side for speed and privacy. Unlike older established calculator sites that grew through 20 years of ad-heavy layouts and outdated UX, AllTools.dev is built fresh on Astro with a clean, mobile-first, accessibility-conscious interface. New calculators ship weekly based on user demand. Ideal for: students doing homework, developers needing quick conversions, finance-minded folks planning loans and investments, professionals doing scientific or engineering calculations, and anyone who just needs a fast answer without installing an app.

The QR Code Generator (TQRCG) is a simple yet powerful tool designed to help businesses enhance customer engagement through QR codes. With its intuitive interface, it allows users to easily create, customize, and manage QR codes for various purposes, including marketing campaigns, product packaging, event promotions, digital displays, and more.

Trusted by over 3 million users worldwide, TQRCG has enabled the creation of 10 million+ QR codes across 60+ countries. It empowers businesses of all sizes to achieve measurable results, whether it’s driving website traffic, gathering customer feedback, boosting product visibility, or strengthening brand presence. While particularly beneficial for industries like retail, real estate, hospitality, restaurants, education, and manufacturing, the platform is versatile enough to cater to any sector with QR code requirements.

One of its standout advantages is that it’s the only QR code generator offering two free dynamic QR codes that never expire, making it perfect for long-term, low-maintenance campaigns. Additionally, the free plan provides unlimited static QR codes, enabling seamless scalability without extra costs.

Key Highlights:

Generous Free Plan – Unlimited static QR codes and two permanent dynamic QR codes.

Versatile QR Solutions – Supports vCard, app downloads, PDFs, feedback forms, multi-URL codes, and more.

Multiple Download Formats – Export QR codes in PNG, SVG, and EPS for flexible usage.

In-Depth Analytics – Track scans, engagement, and campaign performance with detailed insights.

Advanced Customization – Personalize QR codes with colors, logos, and branding for a consistent identity.

Whether you want to capture attention in-store, convert print materials into digital experiences, or track QR code performance across campaigns, TQRCG delivers a fast, reliable, and scalable solution to bridge offline and online interactions seamlessly.