All Free Online Tools

Generate beautiful, accessible color palettes with WCAG compliance checking. Extract colors from images and export to CSS/JSON.

Convert colors between HEX, RGB, HSL, CMYK, and more formats instantly.

Pick any color from screen or input. Get HEX, RGB, HSL values instantly.

Discover the most popular and trending colors in design right now.

Explore color palettes from 60+ iconic brands. Copy exact brand colors instantly.

Check color contrast ratios for WCAG 2.1 AA and AAA compliance with real-time calculation and pass/fail indicators.

Simulate how colors appear under protanopia, deuteranopia, and tritanopia. Side-by-side comparison swatches for accessibility testing.

Find the closest Tailwind CSS color class for any hex color. Browse the full Tailwind palette and copy class names on click.

Upload an image and pick colors from any pixel to get HEX, RGB, and HSL values.

Generate tints and shades of any color with adjustable steps for complete color scale creation.

Find the closest CSS named color for any hex value and browse all 148 CSS color names.

Create beautiful CSS gradients with a visual editor. Linear, radial, and conic gradients.

Create CSS box shadows visually. Adjust blur, spread, offset, and color.

Visual CSS Grid layout builder. Set rows, columns, and gaps with live preview.

Format and beautify messy CSS code. Minify or expand with proper indentation.

Minify CSS code to reduce file size. Remove comments, whitespace, and optimize.

Convert between px, em, and rem CSS units with configurable base font size. Includes conversion table and CSS output.

Calculate aspect ratios for images and videos. Enter width or height with a ratio (16:9, 4:3, 1:1) to find the other dimension.

Build CSS flexbox layouts visually with live preview of justify, align, wrap, and gap properties.

Convert between CSS units like px, em, rem, vw, vh, and percentages with configurable viewport.

Measure pixel distances on screen with a draggable ruler tool for precise web design work.

Create CSS border-radius values visually with individual corner controls and live preview.

Create beautiful CSS gradient text effects with customizable colors, angles, and live preview.

Create CSS keyframe animations visually with timing controls, easing presets, and live preview.

Create CSS clip-path shapes visually with polygon, circle, ellipse, and inset presets.

Convert text between uppercase, lowercase, title case, camelCase, and more.

Generate placeholder text for your designs. Words, sentences, or paragraphs.

Count words, characters, sentences, and paragraphs in your text. Reading time estimation included.

Convert text to spoken audio using browser speech synthesis with voice and speed controls.

Repeat any text or string a specified number of times with custom separators and formatting.

Count characters, words, sentences, and lines with frequency analysis and density stats.

Sort lines of text alphabetically, numerically, or by length with reverse and deduplicate options.

Manipulate lists with sorting, deduplication, prefix/suffix addition, and format conversion.

Format, beautify, minify, and validate JSON data online with instant error detection.

Generate strong, secure passwords with customizable length, symbols, and complexity.

Test and debug regular expressions with real-time matching, highlighting, and explanation.

Generate UUIDs (v4) instantly. Bulk generate, copy, and use in your projects.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text instantly.

Compare two texts and see the differences highlighted. Side-by-side or inline view.

Generate QR codes for URLs, text, WiFi, and more. Download as PNG or SVG.

Minify JavaScript code to reduce file size and improve load times.

Build and understand cron expressions visually. Schedule tasks with a human-readable editor.

Decode and inspect JWT tokens. View header, payload, and verify signature.

Format and beautify messy HTML code with proper indentation and structure.

Live markdown editor with instant HTML preview. Split-view with real-time rendering of headings, bold, italic, code, links, and lists.

Calculate Unix/Linux file permissions interactively. Convert between numeric (755) and symbolic (rwxr-xr-x) notation.

Build cron expressions visually with dropdowns. See next 5 run times and human-readable schedule descriptions.

Analyze IP addresses: class (A/B/C/D/E), binary representation, subnet mask, private/public check, IPv4/IPv6 detection.

Browse all 128 ASCII characters with search and filter. Click any character for decimal, hex, octal, binary, and HTML entity values.

Browse all HTTP status codes with descriptions, use cases, and quick search filtering.

Test JSONPath expressions against JSON data with real-time matching and result highlighting.

Format and beautify SQL queries with proper indentation, keyword uppercasing, and syntax highlighting.

Generate HTML table markup visually with custom rows, columns, headers, and styling options.

Format, beautify, and validate XML data with proper indentation and syntax highlighting.

Convert between numeric and symbolic Unix file permissions with interactive toggles.

Minify JSON by removing whitespace and formatting to reduce file size for production use.

Generate realistic fake data for testing including names, emails, addresses, and phone numbers.

Visualize JSON data as an interactive collapsible tree with search and path copying.

Browse and copy common regex patterns for emails, URLs, dates, IPs, and more.

Generate Apache .htaccess rules for redirects, caching, security headers, and URL rewriting.

Generate Nginx server configuration blocks for reverse proxy, SSL, caching, and redirects.

Build Docker Compose YAML files visually with service definitions, volumes, and networks.

Generate .gitignore files for popular languages, frameworks, and IDEs with template selection.

Generate professional README.md files with sections for installation, usage, API, and badges.

Generate JWT tokens with custom claims, expiration, and algorithm selection for testing APIs.

Edit and validate .env environment files with syntax highlighting and variable management.

Format and prettify API responses in JSON, XML, and other formats with syntax highlighting.

Validate YAML syntax with detailed error messages, line highlighting, and auto-formatting.

Convert images to Base64 data URLs for embedding in HTML and CSS.

Optimize and minify SVG files by removing comments, metadata, and unnecessary attributes. See file size reduction.

Generate placeholder images with custom dimensions, colors, text, and formats for mockups.

Generate SEO-friendly URL slugs from any text. Clean, lowercase, hyphenated URLs.

Generate SEO-optimized meta tags for your website. Title, description, Open Graph, and Twitter cards.

Analyze and preview meta tags from any URL including Open Graph, Twitter cards, and SEO data.

Generate robots.txt files with user-agent rules, allow/disallow paths, and sitemap references.

Preview how your page will look when shared on Facebook, Twitter, LinkedIn, and Discord.

Generate XML sitemaps for your website with priority, change frequency, and last modified settings.

Encode text to Base64 or decode Base64 to text instantly. Supports UTF-8.

Encode or decode URLs and URI components. Handle special characters safely.

Encode special characters to HTML entities or decode them back to text.

Convert Markdown to clean HTML with live preview. Supports GitHub Flavored Markdown.

Convert between Unix timestamps and human-readable dates. Current timestamp display.

Convert JSON arrays to CSV format instantly. Flatten nested objects, extract headers, and download CSV files.

Convert numbers between binary, octal, decimal, and hexadecimal instantly. Real-time conversion with all bases displayed.

Convert JSON to YAML and YAML to JSON instantly. Bidirectional converter with syntax validation and formatting.

Convert CSV data to JSON array format. Auto-detect delimiters, handle quoted fields, and preview data as a table.

Convert text to binary and binary back to text with support for ASCII and Unicode encoding.

Translate text to Morse code and Morse code back to text with audio playback support.

Encode and decode strings in multiple formats including Base64, URL, HTML entities, and Unicode.

Encode special characters to HTML entities and decode entities back to readable characters.

Convert plain text to binary representation and decode binary strings back to readable text.

Extract text content from PDF files instantly. Copy or download extracted text. No upload to servers.

Convert PDF pages to high-quality PNG or JPG images. Adjustable resolution and format options.

Convert JPG, PNG, and WebP images to PDF. Arrange pages, set paper size, and download instantly.

Combine multiple PDF files into one document. Drag to reorder, then merge and download.

Extract specific pages from a PDF file. Select page ranges or individual pages to create a new PDF.

Reduce PDF file size by removing unused data and optimizing structure. Fast, private, browser-based.