Free Developer & Design Tools
90+ fast, private tools for developers, designers, and webmasters — color, CSS, text, JSON and more. No signup, ever.
90+ tools across 7 categories · Runs entirely in your browser
Popular Tools
Color Palette Generator
Generate beautiful, accessible color palettes with WCAG compliance checking. Extract colors from images and export to CSS/JSON.
JSON Formatter & Validator
Format, beautify, minify, and validate JSON data online with instant error detection.
Password GeneratorNEW
Generate strong, secure passwords with customizable length, symbols, and complexity.
Base64 Encoder / DecoderNEW
Encode text to Base64 or decode Base64 to text instantly. Supports UTF-8.
Word & Character CounterNEW
Count words, characters, sentences, and paragraphs in your text. Reading time estimation included.
Regex Tester & DebuggerNEW
Test and debug regular expressions with real-time matching, highlighting, and explanation.
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Palette Generator
Generate beautiful, accessible color palettes with WCAG compliance checking. Extract colors from images and export to CSS/JSON.
Color Converter
Convert colors between HEX, RGB, HSL, CMYK, and more formats instantly.
Gradients
Create beautiful CSS gradients with a visual editor. Linear, radial, and conic gradients.
Color Picker
Pick any color from screen or input. Get HEX, RGB, HSL values instantly.
Trending
Discover the most popular and trending colors in design right now.
Brands
Explore color palettes from 60+ iconic brands. Copy exact brand colors instantly.
Box Shadow
Create CSS box shadows visually. Adjust blur, spread, offset, and color.
CSS Grid
Visual CSS Grid layout builder. Set rows, columns, and gaps with live preview.
CSS Beautifier
Format and beautify messy CSS code. Minify or expand with proper indentation.
JSON Formatter
Format, beautify, minify, and validate JSON data online with instant error detection.
Case Converter
Convert text between uppercase, lowercase, title case, camelCase, and more.
Lorem Ipsum
Generate placeholder text for your designs. Words, sentences, or paragraphs.
Image to Base64
Convert images to Base64 data URLs for embedding in HTML and CSS.
Word CounterNEW
Count words, characters, sentences, and paragraphs in your text. Reading time estimation included.
Password GenNEW
Generate strong, secure passwords with customizable length, symbols, and complexity.
Base64NEW
Encode text to Base64 or decode Base64 to text instantly. Supports UTF-8.
URL EncodeNEW
Encode or decode URLs and URI components. Handle special characters safely.
Regex TesterNEW
Test and debug regular expressions with real-time matching, highlighting, and explanation.
UUID GenNEW
Generate UUIDs (v4) instantly. Bulk generate, copy, and use in your projects.
HTML EntitiesNEW
Encode special characters to HTML entities or decode them back to text.
MD to HTMLNEW
Convert Markdown to clean HTML with live preview. Supports GitHub Flavored Markdown.
TimestampNEW
Convert between Unix timestamps and human-readable dates. Current timestamp display.
Hash GenNEW
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text instantly.
Slug GenNEW
Generate SEO-friendly URL slugs from any text. Clean, lowercase, hyphenated URLs.
Meta TagsNEW
Generate SEO-optimized meta tags for your website. Title, description, Open Graph, and Twitter cards.
Diff CheckerNEW
Compare two texts and see the differences highlighted. Side-by-side or inline view.
QR CodeNEW
Generate QR codes for URLs, text, WiFi, and more. Download as PNG or SVG.
CSS MinifyNEW
Minify CSS code to reduce file size. Remove comments, whitespace, and optimize.
JS MinifyNEW
Minify JavaScript code to reduce file size and improve load times.
Cron BuilderNEW
Build and understand cron expressions visually. Schedule tasks with a human-readable editor.
JWT DecoderNEW
Decode and inspect JWT tokens. View header, payload, and verify signature.
HTML FormatNEW
Format and beautify messy HTML code with proper indentation and structure.
JSON to CSVNEW
Convert JSON arrays to CSV format instantly. Flatten nested objects, extract headers, and download CSV files.
Contrast CheckerNEW
Check color contrast ratios for WCAG 2.1 AA and AAA compliance with real-time calculation and pass/fail indicators.
SVG OptimizerNEW
Optimize and minify SVG files by removing comments, metadata, and unnecessary attributes. See file size reduction.
Base ConverterNEW
Convert numbers between binary, octal, decimal, and hexadecimal instantly. Real-time conversion with all bases displayed.
JSON to YAMLNEW
Convert JSON to YAML and YAML to JSON instantly. Bidirectional converter with syntax validation and formatting.
MD PreviewNEW
Live markdown editor with instant HTML preview. Split-view with real-time rendering of headings, bold, italic, code, links, and lists.
Chmod CalcNEW
Calculate Unix/Linux file permissions interactively. Convert between numeric (755) and symbolic (rwxr-xr-x) notation.
Crontab GenNEW
Build cron expressions visually with dropdowns. See next 5 run times and human-readable schedule descriptions.
IP InfoNEW
Analyze IP addresses: class (A/B/C/D/E), binary representation, subnet mask, private/public check, IPv4/IPv6 detection.
ASCII TableNEW
Browse all 128 ASCII characters with search and filter. Click any character for decimal, hex, octal, binary, and HTML entity values.
Color Blind SimNEW
Simulate how colors appear under protanopia, deuteranopia, and tritanopia. Side-by-side comparison swatches for accessibility testing.
EM/REMNEW
Convert between px, em, and rem CSS units with configurable base font size. Includes conversion table and CSS output.
Aspect RatioNEW
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.
TW ColorsNEW
Find the closest Tailwind CSS color class for any hex color. Browse the full Tailwind palette and copy class names on click.
CSV to JSONNEW
Convert CSV data to JSON array format. Auto-detect delimiters, handle quoted fields, and preview data as a table.
HTTP CodesNEW
Browse all HTTP status codes with descriptions, use cases, and quick search filtering.
JSONPathNEW
Test JSONPath expressions against JSON data with real-time matching and result highlighting.
SQL FormatNEW
Format and beautify SQL queries with proper indentation, keyword uppercasing, and syntax highlighting.
HTML TableNEW
Generate HTML table markup visually with custom rows, columns, headers, and styling options.
FlexboxNEW
Build CSS flexbox layouts visually with live preview of justify, align, wrap, and gap properties.
XML FormatNEW
Format, beautify, and validate XML data with proper indentation and syntax highlighting.
Binary TextNEW
Convert text to binary and binary back to text with support for ASCII and Unicode encoding.
Morse CodeNEW
Translate text to Morse code and Morse code back to text with audio playback support.
Unix PermsNEW
Convert between numeric and symbolic Unix file permissions with interactive toggles.
CSS UnitsNEW
Convert between CSS units like px, em, rem, vw, vh, and percentages with configurable viewport.
Image PickerNEW
Upload a photo and pick the color of any pixel to get its HEX, RGB and HSL codes.
Text to SpeechNEW
Convert text to spoken audio using browser speech synthesis with voice and speed controls.
String EncodeNEW
Encode and decode strings in multiple formats including Base64, URL, HTML entities, and Unicode.
JSON MinifyNEW
Minify JSON by removing whitespace and formatting to reduce file size for production use.
Pixel RulerNEW
Measure pixel distances on screen with a draggable ruler tool for precise web design work.
Border RadiusNEW
Create CSS border-radius values visually with individual corner controls and live preview.
Text RepeatNEW
Repeat any text or string a specified number of times with custom separators and formatting.
Char CounterNEW
Count characters, words, sentences, and lines with frequency analysis and density stats.
Color ShadesNEW
Generate tints and shades of any color with adjustable steps for complete color scale creation.
Fake DataNEW
Generate realistic fake data for testing including names, emails, addresses, and phone numbers.
Entity EncodeNEW
Encode special characters to HTML entities and decode entities back to readable characters.
Gradient TextNEW
Create beautiful CSS gradient text effects with customizable colors, angles, and live preview.
JSON TreeNEW
Visualize JSON data as an interactive collapsible tree with search and path copying.
Regex LibraryNEW
Browse and copy common regex patterns for emails, URLs, dates, IPs, and more.
Text to BinaryNEW
Convert plain text to binary representation and decode binary strings back to readable text.
CSS AnimateNEW
Create CSS keyframe animations visually with timing controls, easing presets, and live preview.
Color NamesNEW
Find the closest CSS named color for any hex value and browse all 148 CSS color names.
Line SorterNEW
Sort lines of text alphabetically, numerically, or by length with reverse and deduplicate options.
List ToolsNEW
Manipulate lists with sorting, deduplication, prefix/suffix addition, and format conversion.
Placeholder ImgNEW
Generate placeholder images with custom dimensions, colors, text, and formats for mockups.
Meta AnalyzerNEW
Analyze and preview meta tags from any URL including Open Graph, Twitter cards, and SEO data.
Clip PathNEW
Create CSS clip-path shapes visually with polygon, circle, ellipse, and inset presets.
.htaccess GenNEW
Generate Apache .htaccess rules for redirects, caching, security headers, and URL rewriting.
Robots.txtNEW
Generate robots.txt files with user-agent rules, allow/disallow paths, and sitemap references.
OG PreviewNEW
Preview how your page will look when shared on Facebook, Twitter, LinkedIn, and Discord.
Nginx ConfigNEW
Generate Nginx server configuration blocks for reverse proxy, SSL, caching, and redirects.
Docker ComposeNEW
Build Docker Compose YAML files visually with service definitions, volumes, and networks.
.gitignore GenNEW
Generate .gitignore files for popular languages, frameworks, and IDEs with template selection.
README GenNEW
Generate professional README.md files with sections for installation, usage, API, and badges.
JWT GeneratorNEW
Generate JWT tokens with custom claims, expiration, and algorithm selection for testing APIs.
.env EditorNEW
Edit and validate .env environment files with syntax highlighting and variable management.
Sitemap GenNEW
Generate XML sitemaps for your website with priority, change frequency, and last modified settings.
API FormatterNEW
Format and prettify API responses in JSON, XML, and other formats with syntax highlighting.
YAML ValidateNEW
Validate YAML syntax with detailed error messages, line highlighting, and auto-formatting.
PDF to TextNEW
Extract text content from PDF files instantly. Copy or download extracted text. No upload to servers.
PDF to ImageNEW
Convert PDF pages to high-quality PNG or JPG images. Adjustable resolution and format options.
Image to PDFNEW
Convert JPG, PNG, and WebP images to PDF. Arrange pages, set paper size, and download instantly.
Merge PDFsNEW
Combine multiple PDF files into one document. Drag to reorder, then merge and download.
Page ExtractorNEW
Extract specific pages from a PDF file. Select page ranges or individual pages to create a new PDF.
Compress PDFNEW
Reduce PDF file size by removing unused data and optimizing structure. Fast, private, browser-based.
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Color Palette Tools for Professional Designers: Complete 2026 Guide
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Every tool is 100% free
No signup, no limits, no data collection. Every tool runs entirely in your browser for maximum privacy and speed.
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