JSON Tree Visualizer
Visualize JSON as an interactive tree structure with collapsible nodes
JWT Decoder
Decode and inspect JSON Web Tokens with expiration checking
Regex Debugger
Test and debug regular expressions with real-time matching
SQL Formatter
Format and beautify SQL queries with syntax highlighting
Code Screenshot Generator
Create beautiful code images for social media and documentation
Text Diff Checker
Compare two texts and highlight differences
Color Palette Generator
Generate beautiful color palettes and check contrast ratios
Cron Expression Builder
Build and understand cron expressions with visual preview
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes
AI Developer Tools
Essential tools for AI/ML development and prompt engineering
Prompt Optimizer
Transform vague prompts into effective, structured instructions
Token Counter
Count tokens and estimate API costs for OpenAI, Claude, and more
JSON Schema Generator
Generate JSON Schema from sample data for OpenAI Function Calling
Regex Generator
Generate regular expressions from natural language descriptions
Text Analysis Tools
Word count, character count, reading time, and text statistics
Color Palette Generator
Generate harmonious color palettes from a base color
About DevTools Hub
Professional developer tools for everyone
Welcome to DevTools Hub
DevTools Hub is a free collection of professional developer tools designed to boost your productivity. Whether you're a seasoned developer or just starting out, our tools help you work faster and smarter.
Our Mission
We believe developer tools should be fast, free, and easy to use. No sign-ups required, no ads cluttering your workspace โ just pure utility at your fingertips.
Features
- 15+ professional developer tools
- 100% free โ no hidden costs
- No registration required
- Fast, client-side processing
- Privacy-focused โ your data never leaves your browser
- Mobile-friendly responsive design
Contact Us
Have questions, suggestions, or feedback? We'd love to hear from you!
Email: support@devtoolshub.com
Legal
Please review our Privacy Policy and Terms of Service.
Privacy Policy
Last updated: June 2026
Privacy Policy for DevTools Hub
Introduction
DevTools Hub ("we", "our", or "us") operates the devtoolshub.com website. This page informs you of our policies regarding the collection, use, and disclosure of personal information when you use our Service.
Information Collection and Use
We do not collect any personal information. All tools process data locally in your browser. Your input data is never sent to our servers.
Log Data
We may collect information that your browser sends whenever you visit our Service ("Log Data"). This Log Data may include information such as your computer's Internet Protocol ("IP") address, browser type, browser version, the pages of our Service that you visit, the time and date of your visit, and other statistics.
Cookies
We use cookies to improve your experience. You can choose to have your computer warn you each time a cookie is being sent, or you can choose to turn off all cookies through your browser settings.
Third-Party Services
We may employ third-party companies and individuals due to the following reasons:
- To facilitate our Service;
- To provide the Service on our behalf;
- To perform Service-related services; or
- To assist us in analyzing how our Service is used.
Google AdSense
We use Google AdSense to display advertisements. Google uses cookies to serve ads based on your prior visits to our website or other websites. Google's use of advertising cookies enables it and its partners to serve ads based on your visit to this site and/or other sites on the Internet.
You may opt out of personalized advertising by visiting Google Ads Settings.
Children's Privacy
Our Service does not knowingly collect personal information from children under 13. If you are a parent or guardian and you are aware that your child has provided us with personal information, please contact us.
Changes to This Privacy Policy
We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page.
Contact Us
If you have any questions about this Privacy Policy, please contact us at privacy@devtoolshub.com.
Terms of Service
Last updated: June 2026
Terms of Service for DevTools Hub
1. Acceptance of Terms
By accessing and using DevTools Hub (the "Service"), you accept and agree to be bound by the terms and provision of this agreement. If you do not agree to these terms, please do not use our Service.
2. Description of Service
DevTools Hub provides a collection of free online developer tools including but not limited to:
- JSON formatting and visualization tools
- Code screenshot generation
- Text diff comparison
- Color palette generation
- AI prompt optimization tools
- Various encoding/decoding utilities
3. User Responsibilities
You are responsible for:
- Ensuring your use of the Service complies with applicable laws
- Maintaining the confidentiality of any data you process using our tools
- Not using the Service for any illegal or unauthorized purpose
4. Intellectual Property
The Service and its original content, features, and functionality are owned by DevTools Hub and are protected by international copyright, trademark, patent, trade secret, and other intellectual property laws.
5. Data Processing
All data processing occurs locally in your browser. We do not store, transmit, or have access to any data you input into our tools. You retain full ownership and responsibility for your data.
6. Disclaimer of Warranties
The Service is provided "as is" and "as available" without warranties of any kind, whether express or implied, including but not limited to implied warranties of merchantability, fitness for a particular purpose, or non-infringement.
7. Limitation of Liability
In no event shall DevTools Hub be liable for any indirect, incidental, special, consequential, or punitive damages resulting from your use of or inability to use the Service.
8. Changes to Terms
We reserve the right to modify these terms at any time. Changes will be effective immediately upon posting. Your continued use of the Service constitutes acceptance of the modified terms.
9. Contact Information
For any questions about these Terms of Service, please contact us at legal@devtoolshub.com.
Contact Us
We'd love to hear from you
General Inquiries
Email: support@devtoolshub.com
Privacy Concerns
Email: privacy@devtoolshub.com
Legal Matters
Email: legal@devtoolshub.com
Business Inquiries
Email: business@devtoolshub.com
Response Time
We typically respond within 24-48 hours during business days.