Free Online Tools
for Every Task
ToolsCard is a free collection of browser-based utilities for developers, designers, and everyday users. From formatting JSON to generating secure passwords, every tool runs instantly in your browser with zero installation. Your data never leaves your device — fast, private, and always available.
Most Popular Tools
View All arrow_forwardThese are the most frequently used tools on ToolsCard. Whether you need to validate data, generate test content, or format code, these utilities are the ones our users reach for every day.
Line Counter
Instantly count lines, words, and characters in any text. Useful for checking file sizes, blog posts, and code metrics.
Credit Card Validator
Verify credit card numbers using the industry-standard Luhn algorithm. Detect card brands like Visa, Mastercard, and Amex.
JSON Formatter
Prettify, validate, and minify your JSON data. Convert between JSON, XML, YAML, and CSV formats with one click.
Password Generator
Create strong, random passwords using cryptographically secure randomness. Customize length, symbols, and character sets.
How ToolsCard Works
Every tool on ToolsCard is designed to be fast and frictionless. There are no accounts to create, no software to download, and no data uploaded to servers. Everything happens right in your browser using modern web technologies like the Web Crypto API and client-side processing.
Find Your Tool
Browse by category or use the smart search to find exactly what you need. Our fuzzy search even handles typos and synonyms, so you always find the right tool.
Enter Your Data
Paste text, type a value, or adjust settings. Every tool provides clear input fields with helpful placeholders and real-time validation so you know exactly what to expect.
Get Instant Results
Results appear immediately — no waiting for server processing. Copy to clipboard with one click or download your output as a file. Everything stays on your device, always.
Why Choose ToolsCard?
The internet is full of online tools, but most of them are slow, full of ads, or require you to upload sensitive data to unknown servers. ToolsCard is different. We built every tool with three core principles: speed, privacy, and simplicity.
Our tools are powered by modern browser APIs like the Web Crypto API for password generation and the Luhn algorithm for credit card validation. Nothing is sent to any server — your data stays in your browser at all times. Whether you are a developer debugging JSON at 2 AM or a content writer counting words for a blog post, ToolsCard gives you exactly what you need with no friction.
100% Free Forever
Every tool is completely free to use. No premium tiers, no usage limits, no hidden costs.
Privacy by Design
Your data never leaves your browser. We have no tracking, no analytics cookies, and no data collection.
Instant Processing
All computations run client-side using Web APIs. Results appear in milliseconds, not seconds.
Works Everywhere
Fully responsive design optimized for phones, tablets, and desktops. Use any tool on any device.
Explore All Tools
ToolsCard offers a growing collection of utilities across multiple categories. Each tool is carefully built to solve a specific problem quickly and reliably.
Line Counter
Quickly count lines of code, documentation comments, and empty lines in your source files. Supports multiple languages.
JSON Formatter
Validate, prettify, minify, and convert JSON to XML, YAML, or CSV. Features auto-indentation and dark mode support.
HTML Minifier
Compress or prettify your HTML code by removing unnecessary whitespace and comments to improve website performance.
Credit Card Validator
Verify credit card numbers using the Luhn algorithm. Detect card brand, validate length, and check formatting.
Credit Card Generator
Generate valid test credit card numbers with Luhn-valid checksums for development and testing purposes.
Password Generator
Generate secure, random passwords with custom length and character options using the Web Crypto API.
Name Generator
Generate random names for characters, projects, businesses, or usernames. Multiple styles and cultural origins available.
Who Uses ToolsCard?
ToolsCard is designed for anyone who works with digital data. Our users span a wide range of professions and use cases, from quick one-off tasks to daily workflows.
Security Professionals
Security experts rely on our Password Generator to create cryptographically strong passwords using the Web Crypto API. Unlike many online generators, ToolsCard never transmits your passwords over the network. The Credit Card Validator helps QA teams verify that test card numbers pass the Luhn algorithm before using them in automated test suites for payment processing systems.
Frequently Asked Questions
Here are answers to the most common questions about ToolsCard and how our tools work.
Is ToolsCard really free?
Yes, every tool on ToolsCard is completely free to use with no limits. There are no premium plans, no sign-up requirements, and no usage caps. We believe essential web utilities should be accessible to everyone without barriers.
Is my data safe when using these tools?
Absolutely. All processing happens directly in your browser using client-side JavaScript. Your data is never sent to our servers or any third party. For sensitive operations like password generation, we use the Web Crypto API, which provides cryptographically secure random number generation built directly into your browser.
Do I need to create an account?
No. ToolsCard requires no registration, no email verification, and no login. Simply visit any tool page and start using it immediately. There is no tracking of individual users and no personal data collection.
Can I use ToolsCard on my phone?
Yes. Every tool is fully responsive and optimized for mobile devices, tablets, and desktops. The interface adapts to your screen size, and all features work identically across devices. You can generate passwords, validate credit card numbers, or format JSON on your phone just as easily as on a desktop computer.
How does the Credit Card Generator work?
The Credit Card Generator creates mathematically valid test numbers using the Luhn algorithm. These numbers pass checksum validation but are not real credit cards — they cannot be used for actual transactions. They are designed exclusively for software testing, payment form development, and educational purposes. The tool supports 11 card brands including Visa, Mastercard, American Express, and Discover.