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Supercharge your workflow with developer, design, and productivity tools trusted by professionals worldwide — all in one place, completely free.
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Our carefully crafted tools help developers, designers, and content creators streamline their workflow and solve everyday challenges.
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Color tools, CSS generators, and responsive design helpers for pixel-perfect interfaces.
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Converters, calculators, and formatters for all your data transformation needs.
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Find exactly what you need with our organized tool categories, designed to help you work smarter, not harder.
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Code Tools
Essential utilities for developers to write, format, and validate code.
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What Developers & Designers Say
Thousands of professionals trust our tools to get their work done faster and more efficiently.
"81FreeTools has become an essential part of my development workflow. The JSON formatter alone has saved me countless hours of debugging. I recommend these tools to all my colleagues."
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James Smith
Senior Frontend Developer
"As a UI designer, I use the color tools and CSS generators daily. They're intuitive, fast, and help me create pixel-perfect designs without writing complex code from scratch."
"The markdown editor and text transformation tools are fantastic for content creators. I can quickly format my blog posts and documentation without switching between multiple apps."
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Ryan Kumar
Technical Writer
Helpful Tutorials & Guides
Learn best practices, tips, and tricks to enhance your development and design skills.
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Mastering JSON: Advanced Techniques
Learn advanced JSON manipulation techniques, common pitfalls, and performance tips for handling complex data structures.
10 min read Development
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Color Theory for Web Designers
Understanding color psychology, accessibility considerations, and creating harmonious color palettes for web projects.
8 min read Design
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Web Security Essentials
Practical security measures every developer should implement to protect user data and prevent common vulnerabilities.
12 min read Security
Latest Updates & News
Stay informed about our newest tools, features, and development trends.
May 5, 2025
New React Component Generator Released
Create customizable React components with our new tool that generates clean, optimized code ready for production.
April 22, 2025
Web Accessibility Tools Update
Our accessibility checker now includes WCAG 2.2 guidelines and provides more detailed recommendations for improvement.
April 10, 2025
Mobile App Coming Soon
We're excited to announce our upcoming mobile app that will bring our most popular tools to your smartphone.
Frequently Asked Questions
Find answers to common questions about our tools and services.
Are all the tools really free to use?
Yes, all tools on 81FreeTools are completely free to use with no hidden charges. We believe in providing professional-grade tools accessible to everyone. We sustain our service through minimal, non-intrusive advertisements and voluntary donations from our supporters.
Do I need to create an account to use the tools?
No account or registration is required to use any of our tools. Simply visit the tool page and start using it immediately. However, creating an optional free account allows you to save your preferences and history across devices.
Is my data secure when using these tools?
Absolutely. Your privacy is our priority. All data processing happens in your browser, and we don't store or collect any of your input data. For tools that require server processing, we use secure, encrypted connections and immediately delete any temporary data after processing.
Can I use these tools offline or install them locally?
Many of our tools support Progressive Web App (PWA) functionality, allowing you to install them on your device and use them offline. Look for the "Install" option in supported browsers when using compatible tools.
How can I suggest a new tool or feature?
We love hearing from our users! You can suggest new tools or features through our Contact page or by clicking the "Suggest a Tool" button at the bottom of each category page. We regularly review user suggestions and implement the most requested features.
Can I use these tools for commercial projects?
Yes, all our tools are available for both personal and commercial use. Whether you're working on personal projects or professional client work, you're welcome to use our tools without restrictions.
About 81FreeTools
81FreeTools started as a small collection of utilities created by a team of developers and designers who needed reliable tools for their daily work. Today, we've grown into a comprehensive platform of over 100 professional tools used by thousands of developers, designers, and content creators worldwide.
Our mission is to provide high-quality, accessible tools that help professionals work more efficiently without the barrier of expensive software subscriptions or complicated setups.
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