Utilities - STARTMAKINGWEBSITES

Welcome to our free Utility Toolbox! Here you'll find a collection of over 100 simple, fast, and effective tools for developers, designers, and content creators. Whether you need to convert data formats, generate code snippets, optimize images, or check your SEO, these client-side utilities are designed to help you get the job done quickly and privately.

Check the contrast ratio between two colors to ensure your text is readable and your design meets WCAG accessibility standards (AA/AAA).

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AI Text Detector (Hidden Chars)

Detect hidden or invisible Unicode characters in text that may indicate AI generation or watermarking. Paste your text to find zero-width spaces and other non-printing characters.

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ARIA Attribute Reference

A searchable reference guide for ARIA roles and their supported attributes to help developers build more accessible web applications.

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Aspect Ratio Calculator

Calculate the aspect ratio of an image or video, and find new dimensions while maintaining the same ratio. Perfect for resizing, cropping, and responsive design.

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Background Blend Mode Mixer

Visually experiment with the CSS background-blend-mode property. See how different modes affect the blend between a color and a background image.

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Barcode Generator

Create high-quality barcodes online for free. Generate various barcode types like CODE128, EAN, and UPC for product labeling, inventory, and more.

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Base64 Decode

Easily decode Base64 encoded strings back to their original text or data format. A simple, fast, and free online utility for developers and data analysts.

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Base64 Encode

Quickly encode your text and data into Base64 format with our free online utility. Perfect for developers for web-safe data transmission and embedding.

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Base64 to Image Viewer

Instantly view an image from a Base64 data string. Paste your Base64 code, including the data URI prefix, to render and preview the picture directly.

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Binary to Text Converter

Easily convert binary code into plain text (ASCII/UTF-8). This tool decodes space-separated binary strings back into readable characters.

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box-decoration-break Visualizer

A visualizer for the CSS box-decoration-break property, showing how borders and padding are applied to fragmented inline elements.

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Case Converter

Easily convert text between different cases: UPPERCASE, lowercase, Title Case, and Sentence case. A quick and simple utility for all your text formatting needs.

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Changelog (Markdown) Generator

Generate a clean, Markdown-formatted entry for your CHANGELOG.md file. Keep your project's release notes consistent and easy to read.

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Character, Word & Line Counter

Count characters, words, lines, and non-blank lines in your text. Our online utility provides instant and accurate statistics for writers, editors, and students.

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Color Blender (Mixer)

Create a color scale by blending two colors together. This tool generates a palette of steps between your chosen colors, perfect for creating gradients and themes.

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Color Converter (Hex/RGB/HSL)

Convert colors between HEX, RGB, and HSL formats with our versatile online utility. Also includes a color picker for easy selection and conversion.

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Color Naming Tool

Find the closest CSS color name for any given hex code. This tool helps you identify standard color names for better readability and accessibility in your code.

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Color Palette Generator from Image

Extract a beautiful color palette from any image. Upload a photo to generate a color scheme based on its most dominant colors, perfect for design inspiration.

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Color Shade/Tint Generator

Create a monochromatic color palette by generating lighter (tints) and darker (shades) variations of a base color. Perfect for UI and theme design.

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Countdown Timer

A simple and easy-to-use online countdown timer. Set a time in hours, minutes, and seconds, and get an alert when the time is up. Perfect for work, study, or the kitchen.

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Credit Card Validator (Luhn)

Validate a credit card number against the Luhn algorithm. This tool checks for a valid number format, helping to catch typos and formatting errors.

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Cron Job Generator

Create and understand cron job schedules with an easy-to-use generator. Define your task's timing and get the crontab line and a human-readable explanation.

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CSS Animation Generator

Visually generate CSS @keyframes animations. Choose from preset effects like fade, slide, and shake, customize the duration, and get the complete CSS code.

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CSS BEM Class Namer

Quickly generate CSS class names following the BEM (Block, Element, Modifier) methodology. A simple helper to keep your CSS organized and scalable.

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CSS border-image Generator

A visual generator for the complex CSS `border-image` property. Create custom, decorative borders using an image source and interactive controls.

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CSS Border Radius Generator

Visually generate complex CSS `border-radius` values. Create organic, fluid shapes by individually controlling the radius of each corner.

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CSS Box Shadow Generator

Visually create and customize CSS box-shadow effects. Adjust offsets, blur, spread, and color to generate the perfect shadow code for your web elements.

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CSS Button Style Generator

Visually design custom CSS buttons with our interactive generator. Customize padding, borders, colors, and hover effects to create the perfect button style.

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CSS calc() Helper

A simple helper tool to construct CSS `calc()` functions. Combine different units (like % and px) for dynamic sizing in your layouts.

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CSS Clamp() Generator

Easily generate the CSS clamp() function for fluid typography and spacing. Create perfectly scalable text that adapts to any screen size.

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CSS Clip-Path Generator

Create unique element shapes with the CSS `clip-path` property. Choose from a variety of presets to generate code for non-rectangular layouts.

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CSS cubic-bezier() Generator

Visually create custom CSS animation and transition timing functions with our interactive cubic-bezier() curve generator.

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CSS drop-shadow() Generator

Visually create CSS `drop-shadow()` filters. Unlike box-shadow, this is perfect for creating shadows on non-rectangular images like transparent PNGs.

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CSS Filter Generator

Visually apply CSS filters like blur, brightness, contrast, and more to an image. Generate the CSS `filter` code for your projects.

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CSS Flexbox Generator

Visually learn and generate CSS Flexbox layouts. Adjust properties like direction, justification, and alignment to create responsive designs with ease.

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@font-face Generator

Quickly create the CSS `@font-face` rule for embedding custom fonts into your website. Define the font family, source URL, weight, and style.

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CSS Grid Generator

Visually create complex and responsive CSS grid layouts. Define columns, rows, and gaps to generate the CSS code for your website.

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CSS Linear Gradient Generator

Visually create beautiful CSS linear gradients. Choose your colors and angle, and get the cross-browser CSS code instantly for your website backgrounds.

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CSS Minifier

Reduce the file size of your CSS by removing comments and unnecessary whitespace. Our online CSS minifier helps improve your website's loading speed.

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CSS :nth-child Tester

Visually test your CSS `:nth-child` and `:nth-of-type` selectors. See which elements are selected by formulas like `2n+1` in real-time.

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CSS Specificity Calculator

Calculate the specificity of CSS selectors to understand the cascade and why some styles override others. An essential tool for debugging complex stylesheets.

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CSS Text Decoration Generator

Visually generate advanced CSS for text decorations. Customize the line, style, color, and thickness of underlines, overlines, and line-throughs.

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CSS Text Shadow Generator

Create stunning typographic effects with our multi-layer CSS text-shadow generator. Design complex glows, outlines, and 3D text effects visually.

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CSS Transform Generator

Visually generate 2D CSS `transform` properties. Use sliders to control scale, rotate, skew, and translate, and get the cross-browser CSS code.

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CSS Triangle Generator

Create pure CSS triangles with this visual generator. Select the direction, size, and color to get the cross-browser CSS code for tooltips, menus, and more.

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CSS Variable Generator

Quickly create a `:root` block of CSS Custom Properties (variables) for your website's theme, including colors, fonts, and spacing.

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CSV to JSON Converter

Convert CSV data into a structured JSON array of objects. Paste your comma-separated data to transform it into a developer-friendly JSON format.

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Data URI Generator

Generate `data:` URIs from files or plain text. A versatile tool to embed any resource directly into your code, from images to text files.

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Data URL to File Converter

Convert a Data URL (or Data URI) back into a downloadable file. Paste the full `data:` string to decode and save the original file.

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Date Calculator

Calculate a future or past date by adding or subtracting years, months, and days from a given start date. A simple tool for planning and scheduling.

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Duplicate Line Remover

Clean up your lists by removing all duplicate lines. This utility quickly processes your text to provide a list of unique entries, with an option for case-sensitivity.

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Event Keycode Finder

A simple utility for developers to find the `key`, `code`, and `which` properties of a keyboard event. Just press any key to see its corresponding values.

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Favicon Generator

Create a complete set of favicons for your website from a single image. Generates apple-touch-icon.png, Android Chrome icons, and a web manifest.

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Find and Replace Text

Easily find and replace text within a block of content. This online tool supports case-sensitive and global replacement for quick text editing and data cleanup.

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CSS font-variant Generator

A generator for the CSS font-variant property, allowing you to control advanced OpenType features like ligatures, numerical styles, and more.

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.gitignore Generator

Generate a `.gitignore` file for your project. Select from a list of common technologies, frameworks, and editors to create a tailored ignore file.

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hreflang Tag Generator

Generate `hreflang` tags to tell search engines about localized versions of your page. Essential for international and multilingual SEO.

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.htaccess Generator

Generate a .htaccess file with common rules for your Apache server, including HTTPS redirection, www/non-www handling, and browser caching.

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HTML Character Reference

Quickly find and copy common HTML character entities. A searchable reference for special symbols like copyright, trademark, quotes, and more.

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HTML <details> Generator

Quickly generate the HTML for a native accordion using the `<details>` and `<summary>` elements. Create accessible disclosure widgets with no JavaScript.

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HTML Entity Decoder

Decode HTML entities like < and & back into their original characters. This utility helps you convert encoded text into a readable format.

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HTML Entity Encoder

Convert special characters into their corresponding HTML entities. This utility is essential for safely displaying code snippets or text with special symbols on a webpage.

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HTML Tag Stripper

Remove all HTML tags from a block of text to get the clean, plain text content. A quick and easy tool for content cleanup and data extraction.

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HTML Table Generator

Quickly generate HTML table markup from comma-separated data (CSV). Paste your data from a spreadsheet to instantly create clean <table>, <tr>, and <td> code.

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HTML Table to Markdown Converter

A converter that takes HTML <table> markup and transforms it into a clean, well-formatted Markdown table, perfect for documentation.

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HTTP Status Code Checker

Quickly look up the meaning of any HTTP status code. Get an instant explanation for codes like 200, 301, 404, and 500 to debug your website or API.

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Image Dimensions Viewer

Quickly find the dimensions of any image. Upload your image file to instantly view its width and height in pixels, plus its file type and size.

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Image Format Converter

Quickly convert your images to different formats like JPG, PNG, WEBP, or BMP. This free, client-side utility is perfect for all your image conversion needs.

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Image to Base64

Convert any image file (JPG, PNG, GIF, etc.) into a Base64 data URI string. Ideal for embedding images directly into CSS, HTML, or other code files.

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Image to WebP Converter

Convert your JPG, PNG, and other images to the next-gen WebP format for superior compression and quality. Improve your website's performance.

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HTML Input Type Sandbox

A sandbox that displays all common HTML <input> types so developers can see how they are rendered natively in their current browser.

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JavaScript Minifier (Basic)

A basic online JavaScript minifier to reduce file size by removing comments and extra line breaks. A simple tool for quick script optimization.

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JS Event Listener Generator

Quickly generate the boilerplate code for a JavaScript `addEventListener`. Specify the selector and event type to get a ready-to-use snippet.

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JSON-LD Schema Generator

Create structured data for your website using JSON-LD to improve your SEO and get rich snippets in Google search results. Starts with FAQPage schema.

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JSON to CSV Converter

Convert your JSON array of objects into a CSV file. This online utility transforms structured JSON data into a downloadable, spreadsheet-friendly CSV format.

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JSON Validator & Formatter

Validate, format, and beautify your JSON data instantly. Our online utility helps you find syntax errors and makes your JSON code readable and easy to debug.

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JWT Decoder (Client-Side)

Decode a JSON Web Token (JWT) to view its contents. This client-side tool quickly shows you the header and payload of a JWT for easy debugging.

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Keyword Permutation Generator

Generate all possible combinations of keywords from multiple lists. An essential tool for SEO and PPC professionals to brainstorm long-tail keywords.

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Line Break Remover

Quickly remove all line breaks from your text. This utility joins all lines into a single line, with the option to replace the line breaks with a custom separator.

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Lorem Ipsum Generator

Generate customizable Lorem Ipsum placeholder text for your design mockups. Choose the number of paragraphs you need for your web design or layout.

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Lorem Picsum Generator

Generate beautiful, random placeholder images from Lorem Picsum. Specify dimensions and apply effects like grayscale or blur for your design mockups.

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Mailto Link Generator

Create custom `mailto:` links for your website. This generator lets you add recipients (To, CC, BCC), a subject line, and a default message body.

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Markdown to HTML Converter

A fast, client-side converter to turn your Markdown text into clean, semantic HTML markup. Perfect for content creators and developers.

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MD5 Hash Generator

Generate an MD5 hash from any string. This online utility is useful for creating checksums to verify file integrity, though not recommended for security.

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Meta Tag Generator

Generate essential meta tags, Open Graph tags, and Twitter Card tags for your website to improve SEO and social media sharing.

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Meta Viewport Tag Generator

Generate the `<meta name="viewport">` tag to control layout on mobile browsers. Customize settings like width, initial-scale, and user-scalability.

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MIME Type Lookup

Find the correct MIME type for any file extension. Our quick lookup utility helps web developers correctly configure server headers and content types.

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Mock API (JSON) Generator

Quickly create a `db.json` file for your mock API. Define your data structure and generate fake JSON data for prototyping with tools like JSON Server.

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Morse Code Converter

Translate text to Morse code and decode Morse code back to text. This online tool provides a quick and easy way to convert between text and Morse signals.

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Number Base Converter

Convert numbers between different bases, including binary, octal, decimal, and hexadecimal. A must-have utility for programmers and computer science students.

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CSS object-fit Visualizer

An interactive tool to help understand and visualize the CSS object-fit and object-position properties for controlling how images are displayed within a container.

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Og:Image Generator

Create a custom Open Graph (og:image) for your articles and pages. This tool generates a 1200x630px image perfect for social media sharing.

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Password Strength Tester

Check the strength of your password with our online tester. Get an instant score and visual feedback on your password's security and complexity.

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Placeholder Image Generator

Quickly generate placeholder images for your design mockups and wireframes. Specify dimensions and custom text to create the exact dummy image you need.

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Pomodoro Timer

Boost your productivity with the Pomodoro Timer. This tool helps you manage your work and break intervals using the popular Pomodoro Technique.

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prefers-color-scheme Generator

A simple generator that provides the CSS media query boilerplate for implementing dark and light themes using the prefers-color-scheme feature.

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Punycode Converter

Convert Internationalized Domain Names (IDNs) with Unicode characters to and from the Punycode ASCII format used by the DNS.

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px to rem/em Converter

Easily convert pixel (px) values to relative CSS units like rem and em. A simple tool for web developers creating responsive and accessible designs.

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QR Code Generator

Create custom QR codes online for free. Generate QR codes for URLs, text messages, Wi-Fi access, and more. Simple, fast, and ready to use.

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Random Number Generator

Generate a truly random number within a specified range (min and max). This tool uses cryptographically secure methods for a less predictable result.

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Read Time Estimator

Estimate the reading time for any piece of text. This tool calculates how long an article or blog post will take to read based on an average words-per-minute (WPM) speed.

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Website Readability Checker

Analyze your content's readability with the Flesch-Kincaid score. Check the grade level and reading ease to ensure your text is accessible to your audience.

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Regex Tester

Test and debug your regular expressions (Regex) in real-time. This tool helps you validate patterns, find matches, and view capture groups.

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Responsive Media Query Generator

Quickly generate CSS media query boilerplate for common device breakpoints. Create both mobile-first (min-width) and desktop-first (max-width) queries.

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Robots.txt Generator

Easily create a `robots.txt` file to manage search engine crawler access to your site. Specify rules for all bots or specific user-agents like Googlebot.

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ROT13 Cipher

Quickly encode or decode text using the ROT13 cipher. A simple and fun way to obfuscate text by rotating letters 13 places in the alphabet.

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Screen Resolution Detector

Instantly detect your screen resolution, browser viewport size, and device pixel ratio. A simple tool for web designers and developers testing responsive designs.

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SERP Snippet Preview Tool

See how your webpage will appear in Google's search results. This tool previews your title tag and meta description and checks their length.

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SHA-256 Hash Generator

Generate a secure SHA-256 hash from any text string. Our online utility uses the Web Crypto API for reliable checksums, data integrity checks, and more.

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SHA-512 Hash Generator

Create a SHA-512 hash from any text with our secure online generator. Ideal for high-security applications requiring a longer, more complex checksum.

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Simple CSS Beautifier

Make minified or compressed CSS code readable again. Our Simple CSS Beautifier adds proper indentation and line breaks to format your stylesheets for easy debugging.

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Simple Image Compressor

Reduce the file size of your JPG, PNG, and WEBP images with our client-side compressor. Adjust the quality to find the perfect balance for web performance.

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Sitemap.xml Generator

Create a simple, clean XML sitemap for your website. This generator helps search engines like Google discover and index all your important pages.

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SQL Formatter

Make your SQL queries readable with our simple formatter. This tool beautifies your SQL code by adding line breaks and indentation for major clauses.

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Subresource Integrity (SRI) Hash Generator

Generate Subresource Integrity (SRI) hashes (sha256, sha384, sha512) for your external scripts and stylesheets to prevent malicious file modifications.

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Strong Password Generator

Generate strong, secure, and random passwords with our customizable utility. Choose length, numbers, symbols, and case to create highly secure passwords.

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CSS subgrid Generator

A conceptual generator and visualizer for the CSS subgrid feature, helping developers understand how to create nested grids that align with the main parent grid.

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SVG Optimizer

Reduce the file size of your SVG images by removing unnecessary data. Our online SVG optimizer cleans your vector files for better web performance.

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SVG Shape Generator

Generate custom SVG shapes like organic blobs, stars, and polygons. Customize the appearance and get the SVG code for your icons or backgrounds.

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SVG to CSS background-image Converter

Convert SVG code into a URL-encoded CSS background-image. The modern, preferred method for embedding lightweight, scalable icons in your stylesheets.

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CSS text-emphasis Generator

A generator for the CSS text-emphasis property, allowing you to add emphasis marks (like dots or circles) above or below text, common in East Asian typography.

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Text/Line Sorter

Organize your lists by sorting text lines alphabetically (A-Z, Z-A) or numerically (ascending, descending). A simple utility for data cleanup and organization.

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Text to Binary Converter

Easily convert plain text (ASCII/UTF-8) into binary code. This tool encodes each character into its 8-bit binary representation.

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Text to Speech

Convert written text into spoken audio with this free online Text to Speech (TTS) utility. Choose from various voices available in your browser to read text aloud.

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Time Zone Converter

Easily convert times between different world time zones. Select a date and time to find out what time it will be in another city or country.

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Unix Timestamp Converter

Convert Unix timestamps to human-readable dates and vice versa. A quick and easy tool for developers working with server logs, APIs, and databases.

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URL Encoder / Decoder

Encode or decode strings for safe use in URLs. This tool handles percent-encoding for special characters, making your data URL-safe.

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URL Parser

Break down any URL into its individual components. This tool parses a URL to show its protocol, hostname, path, query parameters, and hash.

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URL Slug Generator

Create clean, SEO-friendly URL slugs from any string. This utility converts your text into a web-safe format, perfect for permalinks and pretty URLs.

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User Agent Parser

Quickly find and display your browser's User Agent string. This tool helps you identify your browser, version, and operating system as seen by websites.

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UUID/GUID Generator (v4)

Generate cryptographically strong Version 4 UUIDs (Universally Unique Identifiers) instantly. A simple, one-click tool for developers.

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WebP to PNG Converter

Convert modern WebP images back to the universally supported PNG format. A simple, client-side tool for image format conversion.

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Whitespace Remover

Clean up your text by removing leading/trailing whitespace from each line and collapsing multiple spaces into a single space. Ideal for formatting and data cleanup.

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Word Frequency Counter

Analyze your text to find the most frequently used words. This utility counts the occurrences of each word, perfect for SEO and content analysis.

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XML to JSON Converter

A browser-based tool to convert data between XML and JSON formats. Ideal for developers working with legacy APIs, RSS feeds, or enterprise systems.

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YAML to JSON Converter

A client-side tool to convert data between YAML and JSON formats. Essential for developers working with configuration files, DevOps, and APIs.

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Your IP Address Info

Find your public IP address and get basic geolocation information, including your city, country, and ISP. A quick tool for checking your network identity.

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YouTube Timestamp Link Generator

Create a YouTube link that starts at a specific time. Enter a YouTube URL, set the minutes and seconds, and generate a timestamped link to share.

Frequently Asked Questions

What are these utilities?

This is a collection of free, simple, and powerful online tools designed to help web developers, designers, and content creators with common tasks. From converting data and generating code to optimizing images and checking SEO, these utilities are built to be fast and easy to use.

Is my data safe? Are these tools private?

Yes, your data is safe. All of these utilities run entirely in your browser (client-side). This means your data is never uploaded or sent to a server. Everything you paste or upload is processed on your own computer, ensuring your privacy and security.

Are these tools free to use?

Absolutely. All the utilities provided on this page are completely free to use for any personal or commercial purpose. There are no restrictions, sign-ups, or limitations.

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