CoreTools - Developer Tools Suite
A comprehensive collection of 30+ powerful tools designed to streamline your development workflow. From code validation to data analysis, we've got everything you need.
Why Choose CoreTools?
We've created a platform that makes developers' work easier, faster, and more efficient
Instant Processing
All tools work in real-time without delays
Data Security
Your data is processed locally and not stored on servers
24/7 Availability
We work around the clock with 99.9% guaranteed uptime
Responsive Design
Works great on all devices: computers, tablets, and phones
Open Source
Transparency and ability to contribute to project development
Free Forever
All tools are available for free without hidden payments
How It Works?
Just three simple steps to get results
Choose Tool
Browse our collection of 23 tools and select the one you need
Upload Data
Paste text, upload file, or enter data for processing
Get Result
Instantly get processed result ready for use
Popular Tools
Most used tools by our community
AI Token Calculator - Estimate Prompt Token Usage
Calculate AI token usage and costs for your prompts. This token calculator helps you plan, optimise, and manage your AI tool expenses effectively.
JSON Validator Online - Fast JSON Validation
Validate and format your JSON instantly with our online JSON validator. Check syntax errors and beautify your code in seconds.
YouTube Comment Scraper - Download YouTube Comments Fast
Use our YouTube Comment Scraper to quickly download all comments from any video. Analyze feedback, gather insights, and export them in seconds.
Password Generator – Create Strong Passwords Instantly
Create secure passwords with this free online password generator. Generate strong, random passwords and check their strength instantly for better security.
What Our Users Say
Join thousands of satisfied developers
Alex Petrov
Senior Developer • TechCorp
"CoreTools has become an indispensable assistant in my daily work. I especially love the JSON validator and password generator."
Maria Sidorova
Data Analyst • DataFlow
"CSV Viewer is simply amazing! Now I can quickly analyze large data files without installing additional software."
Dmitry Kozlov
DevOps Engineer • CloudTech
"I use CoreTools to check configuration files. Fast, reliable, and always at hand."
New Tools
Recently added tools
JWT Generator – Create & Sign Tokens (HS256/RS256)
NewGenerate, decode, and sign JWT tokens securely online. Support for HS256 and RS256 signing.
Color Picker – Pick and Convert Colors Online
NewPick, convert, and copy colors instantly with this online color picker. Get HEX, RGB, and HSL codes for your designs, websites, or branding projects.
CSV Viewer – View and Format CSV Files Online
NewView and format CSV files easily with this online CSV viewer. Clean up data, visualise tables, and work with CSV files directly in your browser.
Regex Tester - Test and Validate Regular Expressions
NewQuickly test and validate your regular expressions online. This regex tester highlights matches, shows groups, and helps you debug patterns easily.
Detailed Statistics
Platform in numbers
Tool Categories
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Frequently Asked Questions
Answers to the most popular questions
Ready to Get Started?
Join thousands of developers who trust CoreTools for their daily workflow
Get Started