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130 free developer tools available

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Formatters (9)

  • CSS Formatter — Format and beautify CSS stylesheets with proper indentation.
  • Email HTML Renderer — Preview HTML email templates with simulated email client constraints, viewpor...
  • HTML Formatter — Format and beautify HTML with proper indentation. Clean up messy markup.
  • Javascript Formatter — Format and beautify JavaScript code with proper indentation.
  • JSON Formatter — Format, validate, and beautify JSON with syntax highlighting. Minify JSON for...
  • Log Parser — Parse and analyze log files with auto-format detection, structured table outp...
  • SQL Formatter — Format and beautify SQL queries with proper indentation and keyword highlight...
  • XML Formatter — Format, validate, and beautify XML documents with proper indentation.
  • YAML Formatter — Format, validate, and beautify YAML documents. Perfect for Kubernetes and Doc...

Generators (19)

  • Box Shadow Generator — Create custom CSS box shadows with an interactive visual editor.
  • Color Palette Generator — Generate harmonious color palettes for your design projects.
  • Credit Card Generator — Generate Luhn-valid test credit card numbers for QA with real brand prefixes ...
  • Fake Data Generator — Generate realistic test data for development and testing.
  • Favicon Generator — Generate favicons from text or images. Create multiple sizes, preview instant...
  • Gradient Generator — Create beautiful CSS gradients with an interactive visual editor.
  • Hash Generator — Generate MD5, SHA-1, SHA-256, SHA-512, and other cryptographic hashes.
  • Hmac Generator — Generate and verify HMAC-SHA256, HMAC-SHA384, and HMAC-SHA512 signatures in h...
  • Htaccess Generator — Generate Apache .htaccess configuration for redirects, security, and caching.
  • Invoice PDF — Create professional invoices in-browser and download as PDF. Free, no sign-up...
  • Lorem Ipsum Generator — Generate placeholder text for mockups, designs, and prototypes.
  • Meta Tag Generator — Generate essential HTML meta tags for SEO and social sharing.
  • Password Generator — Generate secure, cryptographically random passwords with customizable options.
  • Placeholder Image — Generate placeholder images with custom dimensions, colors, and text overlay ...
  • Qr Code Generator — Generate QR codes from any text or URL. Download as PNG for use anywhere.
  • Slug Generator — Convert text into URL-friendly slugs for SEO-optimized URLs.
  • Svg Optimizer — Optimize and compress SVG files by removing unnecessary data while preserving...
  • User Agent Generator — Generate realistic random user agent strings for QA and browser/device-compat...
  • Uuid Generator — Generate UUID v1, v4, v5, v7, or NIL UUIDs — including time-ordered v7. Bulk ...

Converters (17)

  • Aspect Ratio Calculator — Calculate and maintain aspect ratios for images and videos.
  • Base64 Encoder — Encode and decode Base64 strings. Supports text and UTF-8 content.
  • Byte Size Converter — Convert between bytes, KB, MB, GB, and other digital storage units.
  • Color Converter — Convert colors between HEX, RGB, HSL, HSV, and CMYK formats.
  • Curl Converter — Convert cURL commands to Python, JavaScript, Go, Java, PHP, Rust, C#, and mor...
  • HTML Entity Encoder — Encode and decode HTML entities for safe HTML insertion.
  • JSON Csv Converter — Convert between JSON and CSV formats bidirectionally.
  • JSON Csv To SQL — Convert JSON arrays or CSV data into SQL INSERT statements with automatic typ...
  • JSON Path Query — Query and extract data from JSON documents using JSONPath expressions. Suppor...
  • JSON Typescript Converter — Paste JSON and get export-ready TypeScript interfaces, Go structs, or Java PO...
  • JSON XML Converter — Convert between JSON and XML formats bidirectionally.
  • JSON YAML Converter — Convert between JSON and YAML configuration formats.
  • Number Base Converter — Convert numbers between binary, octal, decimal, and hexadecimal.
  • Text Case Converter — Convert text between uppercase, lowercase, title case, and more.
  • Timestamp Converter — Convert between Unix timestamps and human-readable dates. Supports multiple f...
  • Unit Converter — Convert between different measurement units for length, weight, and more.
  • Url Encoder — Encode and decode URL strings. Convert special characters to percent-encoded ...

Validators (14)

  • Credit Card Validator — Validate credit card numbers using the Luhn algorithm. Identifies card network.
  • Cron Validator — Validate and explain cron expressions with next execution times.
  • CSS Selector Tester — Test CSS selectors against pasted HTML with live match highlighting and specificity.
  • Email Validator — Validate email address format according to RFC 5322 standards.
  • File Hash Checker — Calculate and verify file hashes (SHA-1, SHA-256, SHA-384, SHA-512) to ensure...
  • Iban Validator — Validate IBAN numbers using the ISO 7064 mod-97 checksum with per-country len...
  • Ip Validator — Validate IPv4 and IPv6 address formats and classifications.
  • JSON Schema Validator — Validate JSON data against JSON Schema specifications.
  • Password Strength Tester — Check how strong a password really is: entropy estimate, 0–4 strength score, ...
  • Phone Validator — Validate phone number formats for various countries.
  • Regex Builder — Visual regex builder with live testing, match highlighting, capture group bre...
  • Regex Tester — Test and debug regular expressions with real-time matching and highlighting.
  • Url Validator — Validate URL syntax according to RFC 3986 standards.
  • Xpath Tester — Test XPath expressions against XML or HTML with live match highlighting, name...

Diff & Compare (5)

  • Image Diff — Compare two images visually using slider, side-by-side, or overlay modes.
  • JSON Diff — Compare two JSON objects and see structural differences highlighted.
  • Text Diff — Compare two text inputs and see differences highlighted line by line.
  • Three Way Merge — Three-way diff and merge tool with automatic conflict detection and resolution.
  • XML Diff — Compare two XML documents and highlight structural differences.

Encoders (5)

  • HTML To Markdown — Convert HTML content into clean Markdown syntax.
  • JWT Builder — Create JSON Web Tokens with custom headers, payloads, and signatures.
  • JWT Decoder — Decode and inspect JSON Web Tokens (JWT). View header, payload, and signature.
  • Markdown Preview — Write Markdown and see live rendered HTML preview. Supports GFM and code high...
  • Text Encoder — Convert text to binary, hex, octal, Base32, and Morse code.

Analyzers (1)

  • Character Counter — Count characters, words, sentences, and estimate reading time.

Network (11)

  • Api Tester — Send HTTP requests to any REST API from your browser — methods, headers, and ...
  • CORS Tester — Test CORS (Cross-Origin Resource Sharing) policies for any API endpoint.
  • CSP Builder — Visual Content Security Policy header generator with directive toggles, prese...
  • DNS Lookup — Look up DNS records for any domain. Get A, AAAA, MX, TXT, NS, and CNAME records.
  • Graphql Playground — Run GraphQL queries against any endpoint in your browser — query editor, variables, and formatted responses.
  • Http Header Checker — Check HTTP response headers for any URL. Analyze security headers and configu...
  • SSL Checker — Check SSL/TLS certificate details, expiry dates, and security configuration f...
  • SSL Config Generator — Generate secure SSL/TLS configurations for Nginx, Apache, Caddy, and HAProxy ...
  • Webhook Tester — Generate unique webhook URLs to receive and inspect HTTP requests from any se...
  • Website Status Checker — Check if a website is up or down in one click — real HTTP status code, respon...
  • Whois Lookup — Look up domain registration information including registrar, expiry date, and...

Reference (1)

  • Http Status Codes — Complete reference of HTTP status codes with descriptions and use cases.

Minifiers (3)

  • CSS Minifier — Minify CSS code to reduce file size. Remove comments, whitespace, and optimiz...
  • HTML Minifier — Minify HTML code to reduce file size. Remove comments, whitespace, and optimi...
  • Javascript Minifier — Minify JavaScript code to reduce file size. Remove comments, whitespace, and ...

SEO Tools (6)

  • Canonical Url Builder — Generate canonical link tags to prevent duplicate content issues. Clean URLs ...
  • Og Preview — Preview and generate Open Graph meta tags for social media sharing.
  • Robots Txt Generator — Generate robots.txt files to control search engine crawler access to your web...
  • Schema Markup Generator — Generate structured data markup for SEO. Create Article, Product, FAQ, Organi...
  • Sitemap Generator — Create valid XML sitemaps for search engines with customizable priority, chan...
  • Structured Data Validator — Validate JSON-LD structured data against schema.org specs and preview rich sn...

Legal (5)

  • Cookie Policy Generator — Generate GDPR and CCPA compliant cookie policies for your website with custom...
  • Disclaimer Generator — Generate professional disclaimers for your website including general, affilia...
  • Dmca Policy Generator — Generate a comprehensive DMCA (Digital Millennium Copyright Act) policy for y...
  • Privacy Policy Generator — Generate GDPR and CCPA compliant privacy policies for your website with our f...
  • Terms Generator — Generate professional Terms of Service documents for your website or app.

Image Tools (3)

  • Base64 Image Converter — Convert images to Base64 data URI strings and vice versa. Generate CSS backgr...
  • Image Compressor — Compress images online to reduce file size. Support for JPEG, PNG, and WebP f...
  • Responsive Preview — Preview a URL at mobile, tablet, and desktop widths.

Accessibility (3)

Utilities (3)

  • Cron Calendar — Visualize cron job schedules with an interactive calendar. See when your cron...
  • Data Masker — Anonymize PII in JSON and CSV files with configurable masking strategies incl...
  • Secret Scanner — Scan code for leaked API keys, tokens, passwords, and secrets with severity l...

File Tools (25)

  • Csv Excel Viewer — View, edit, sort, and filter CSV and Excel files in your browser. Free online...
  • Document To PDF — Convert HTML, Markdown, and text documents to PDF. Free online converter with...
  • Image Background Remover — Remove backgrounds from images using AI-powered detection. Free online tool w...
  • Image Format Converter — Convert images between JPEG, PNG, WebP, BMP, GIF, and HEIC formats. Free onli...
  • Images To PDF — Turn JPG, PNG, WebP, BMP, GIF or HEIC images into a single PDF online. Auto o...
  • Invoice Generator — Create GST tax invoices and simple POS cash bills as PDFs. Free online invoic...
  • PDF Add Watermark — Stamp text or image watermarks onto your PDFs online — with opacity, size, ro...
  • PDF Compress — Reduce PDF file size online for free. Two client-side modes: Smart keeps text...
  • PDF Crop Resize — Crop white margins or resize a PDF to an exact paper size for free. Vector tr...
  • PDF Extract — Extract selectable text into a .txt file or pull out every embedded image fro...
  • PDF Flatten — Flatten a PDF form to bake fillable fields into the page and remove links, st...
  • PDF Hash — Generate MD5 and SHA-1/256/384/512 hashes plus a content fingerprint for any ...
  • PDF Invert — Invert a PDF's colors or turn it into a dark-mode, night-reading version — ph...
  • PDF Merge — Combine multiple PDFs into one document online. Free PDF merger with page ord...
  • PDF Metadata Editor — Edit PDF metadata online — change Title, Author, Subject, Keywords and Creato...
  • PDF Page Numbers — Add page numbers to a PDF online. Free tool for numbering pages with flexible...
  • PDF Privacy Scanner — Scan a PDF for sensitive data (SSN, Aadhaar, PAN, card numbers, emails, phone...
  • PDF Protect — Password-protect a PDF online with 128-bit RC4 encryption. Add a password so ...
  • PDF Rotate Flip — Rotate PDF pages and mirror them horizontally or vertically online. Per-page ...
  • PDF Split — Split a PDF into separate pages, custom ranges, or fixed-size parts online. F...
  • PDF To Image — Convert PDF pages to JPG or PNG images online for free. Pick resolution and q...
  • PDF To Markdown — Convert PDF text to Markdown, HTML, or plain text online for free. Extract re...
  • PDF To Word Excel — Extract text from PDF files and convert to Word or Excel format. Free online ...
  • PDF Unlock — Remove the password from a PDF online. Free, fast PDF unlocker that runs full...
  • Video Gif Converter — Convert video clips to animated GIFs and GIFs to video. Free online converter...

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