Developer Tools
Credit Card Validator Tool
Validate credit card numbers using the Luhn algorithm and detect card type. Free and easy to use.
All Tools (Page 2)
Browse all free online calculators, developer utilities, and web tools. Fast, private, browser-based tools with zero login required. Explore the collection. — 69 items. (Page 2 of 3)
WWeb Development ToolsDDesign & Development ToolsDDeveloper ToolsSSaaS & Business Growth CalculatorsFFinancial ToolsDDeveloper & Coding ToolsGGraphic Design & UI UtilitiesSSEO ToolsUUtility ToolsBBusiness ToolsFFinancial, Sales & Tax CalculatorsSSEO & Website Analysis ToolsCContent Writing & Text FormattingSSales Tools
Web Development Tools
Contrast Checker: WCAG Contrast Ratio Calculator
Calculate WCAG contrast ratio between two colors with Contrast Checker. Get real-time results and grade your color contrast.
Financial Tools
Compound Interest Calculator
The Compound Interest Calculator helps you understand how your money can grow over time through the power of compounding. This tool...
Web Development Tools
Color Temperature Converter - Convert Kelvin to RGB
Convert Kelvin temperature to RGB color with this easy-to-use tool. Get precise color values for your projects.
Developer & Coding Tools
CSS Minify Tool Online
If your website feels sluggish and your stylesheets have ballooned into thousands of lines of nicely indented, heavily commented code, a...
Content Writing & Text Formatting
Reverse a Text Online
Whether you are a developer testing string manipulation algorithms, a marketer looking to create engaging social media puzzles, or a...
Developer & Coding Tools
Strip HTML Tags Online
Whether you are a seasoned web developer, a digital marketer, or a content manager, you have likely encountered the frustrating scenario...
Content Writing & Text Formatting
The Ultimate Word Counter Online: Analyze Your Text Instantly
Whether you are a seasoned novelist, a digital marketer, or a student striving for the exact word limit on an assignment, keeping track...
Health Calculators & Gaming Tools
Typing Speed Test Online
How fast can you really type? A Typing Speed Test answers that question in just sixty seconds, turning a vague sense of "pretty fast"...
Developer & Coding Tools
HTML to Markdown
If you have ever needed to move content out of a web page and into a README file, a static site generator, or a note-taking app, you...
Developer & Coding Tools
HTML Entity Encoder / Decoder
If you have ever pasted a snippet of code into a web page only to watch the browser swallow it and render live elements instead of the...
Developer & Coding Tools
HTML Minifier: Compress Your Code to Boost Page Speed and Shrink File Size
Every unnecessary space, line break, and comment in your markup adds weight to your pages, and a fast, reliable HTML Minifier is the...
Developer & Coding Tools
HTML Encoder Decoder: Convert Special Characters to HTML Entities and Back
If you have ever tried to display raw code on a web page only to watch the browser render it as actual elements, you already understand...
Graphic Design & UI Utilities
Color Shade Generator: Instantly Create Lighter and Darker Shades of Any Color
Finding the right lighter and darker versions of a color is a task that comes up constantly in design work, and a dependable Color Shade...
Graphic Design & UI Utilities
Color Palette Generator: Create Stunning Color Schemes From Any Base Color
Choosing the right colors is one of the hardest parts of any design project, and a great Color Palette Generator removes almost all of...
Graphic Design & UI Utilities
Free Color Extractor Tool — Pull Hex, RGB & HSL Colors from CSS
The Color Extractor is a free online tool that scans any block of CSS or text you paste into it and pulls out every color value it can...
Health Calculators & Gaming Tools
Coin Flip Tool — Complete Content Package
The Coin Flip tool is a free, browser-based simulator that lets you toss a virtual coin and instantly get a heads or tails result. With...
SaaS & Business Growth Calculators
Cohort Retention Calculator & Heatmap
The Cohort Retention Calculator is a free, browser-based tool that turns your raw retention numbers into a clear visual story. You enter...
SaaS & Business Growth Calculators
Churn Rate Calculator
What is Churn Rate Calculator Tool The Churn Rate Calculator is a free, instant tool that turns four simple numbers — your starting...
Content Writing & Text Formatting
Character Counter Tool
The Character Counter is a simple yet powerful online text analysis tool that provides detailed statistics about any text you enter....
SEO & Website Analysis Tools
Free Canonical URL Generator — Create Rel Canonical Tags in One Click
Duplicate content is one of the most damaging, and most overlooked, SEO problems on the web. The Canonical URL Generator solves it in...
SaaS & Business Growth Calculators
CAC Payback Period Calculator for SaaS Businesses
Explain what the CAC Payback Period Calculator does, who it's for (SaaS founders, CFOs, investors), and why knowing your CAC payback...
Graphic Design & UI Utilities
CSS Button Generator
Creating attractive website buttons can take time when manually adjusting CSS properties. Our CSS Button Generator helps developers,...
SaaS & Business Growth Calculators
Burn Rate Calculator
Track your startup's cash burn, calculate runway, forecast future financial health, and determine how long your business can operate...
Network Admin & IT Utilities
Browser Information – See Everything About Your Browser & Device
it detects and displays complete browser information directly in your browser with zero tracking, no login, and no software to install....
SaaS & Business Growth Calculators
SaaS Break-Even Calculator: Find Your Profit Threshold in Seconds
what SaaS break-even calculator tool does and who it's for (SaaS founders, startup CFOs, indie hackers). What Is a SaaS Break-Even...
Developer & Coding Tools
CSS Box Shadow Generator
it lets developers and designers visually create CSS box-shadow effects by adjusting parameters in real time, then copying the generated...
Developer & Coding Tools
CSS Border Radius Generator
it lets users visually set rounded corners for any HTML element and instantly generates the CSS border-radius property code — no manual...
Health Calculators & Gaming Tools
Free BMI Calculator — Check Your Body Mass Index Online
enter your weight and height, get your BMI instantly, see where you fall on the BMI scale, and receive a healthy weight range for your...
Developer & Coding Tools
Binary to Text Converter
Convert any binary code into human-readable text in one click. Paste your binary string below, hit Convert, and get your decoded result...
Developer & Coding Tools
Free Base64 Encoder Decoder Online
it allows users to instantly encode any plain text into Base64 format or decode a Base64 string back into readable text — entirely in...
Developer & Coding Tools
Free Online Base Converter
what the tool does, who it's for (students, developers, engineers), and why it's useful. Mention it supports any base from 2 to 36 and...
Digital Marketing & Social Media
Free Barcode Generator Online
Introductory paragraph explaining what the tool does: allows users to instantly create professional barcodes by entering any text or...