All Web & Developer Tools
Browse our complete suite of 100+ free, high-speed online utilities. Filter by keyword or category.
No tools match your query
Try searching for keywords like "CSV", "PX", "Hash", "Password", or "SQL".
JSON to CSV Converter
Transform nested or tabular JSON datasets into clean, spreadsheet-ready CSV files with custom delimiters and automatic key flattening.
CSV to JSON Converter
Instantly convert CSV files and spreadsheet data into valid, nicely indented JSON structures for web APIs, testing, and databases.
JSON to YAML Converter
Convert JSON payloads into clean, indented YAML format with strict indentation for Docker, Kubernetes, and cloud configs.
YAML to JSON Converter
Translate YAML configurations into strictly formatted JSON for API consumption, programmatic testing, and database ingestion.
JSON Formatter & Beautifier
Transform messy, unformatted, or minified JSON into clean, readable code with syntax validation and 1-click indentation options.
SQL Query Formatter & Beautifier
Beautify messy, single-line SQL queries with structured indentation and standard uppercase SQL keywords (SELECT, FROM, WHERE, JOIN).
Markdown to HTML Converter
Compile Markdown text into clean, semantic HTML5 code with instantaneous browser rendering and 1-click HTML copy.
Base64 Encoder & Decoder
Encode strings into RFC 4648 Base64 representation or decode Base64 payloads back to readable UTF-8 text.
URL Encoder & Decoder
Safely encode special characters into percent-encoded (%20, %26) URI components or decode encoded URLs back to human-readable strings.
PX to REM Converter & Cheat Sheet
Convert PX to REM and REM to PX in real-time with customizable base font size (16px default) and comprehensive typography reference tables.
CSS clamp() Calculator for Fluid Typography
Generate fluid, responsive font sizes and spacing that scale smoothly across mobile and desktop screens without media query breakpoints.
Aspect Ratio Calculator (16:9, 4:3, 21:9)
Calculate matching dimensions, aspect ratio fractions, and CSS aspect-ratio properties with instant presets for popular device resolutions.
CSS Box Shadow Generator
Design multi-layered CSS box shadows visually with real-time preview, opacity sliders, blur spread controls, and 1-click CSS code export.
CSS Glassmorphism & Frosted Glass Generator
Design sleek frosted glass UI elements with adjustable backdrop-filter blur, background opacity, outline highlights, and instant CSS export.
CSS Gradient Generator (Linear & Radial)
Create multi-color linear and radial gradients with real-time canvas preview, custom angle rotation, and production-ready CSS rules.
SEO Meta Tag & Open Graph Generator
Create complete SEO meta tags, Open Graph tags, and Twitter Cards with character limit indicators to maximize your Google rankings and social CTR.
Robots.txt File Generator
Generate clean robots.txt directives to guide search engine web crawlers, protect private directories, and declare XML sitemaps.
.htaccess 301 Redirect & Security Generator
Create tested Apache mod_rewrite directives: enforce HTTPS, consolidate canonical domains (www vs non-www), and set up permanent 301 redirects.
HTML Minifier & Compressor
Strip unnecessary whitespace, redundant comments, and line breaks from HTML documents to boost page speed and lower bandwidth consumption.
SHA-256 Hash Generator
Compute 256-bit (64 hex characters) cryptographic hash checksums for any input string using browser-native Web Crypto APIs.
MD5 Hash Checksum Generator
Calculate 32-character hexadecimal MD5 hash checksums for cache busting, database keys, and file integrity verification.
Strong Password Generator & Entropy Checker
Create cryptographically secure, high-entropy passwords and API secret keys using the Web Cryptography API random number generator.
UUID v4 Generator (Single & Bulk)
Generate standard RFC 4122 compliant version 4 UUIDs (Universally Unique Identifiers) for database primary keys, distributed systems, and API tracking.
JWT (JSON Web Token) Debugger & Inspector
Decode Base64Url encoded JWTs to inspect authentication headers, payload claims (iss, sub, exp), and verify token expiration in real-time.
Word, Character & Sentence Counter
Calculate real-time text metrics: word count, characters, sentences, paragraphs, reading time, and estimated speaking duration.
String Case Converter (camelCase, snake_case, Title Case)
Transform variable names, article headlines, and code identifiers between camelCase, snake_case, kebab-case, UPPERCASE, and Title Case.
URL Slug Generator (SEO Slugify)
Transform blog post titles and page headings into clean, lowercase, hyphenated URL slugs optimized for search engine indexing.
Lorem Ipsum Dummy Text Generator
Generate standard Cicero dummy placeholder text for website wireframes, UI mockups, and typography testing with custom paragraph counts.
Duplicate Line Remover & Text Sorter
Clean up email lists, keyword lists, and data exports by stripping duplicate entries, trimming extra spaces, and sorting alphabetically.
REM to PX Converter
Convert REM units back to pixel dimensions with customizable root font sizes (16px default) for CSS layout development.
HEX to RGB & HSL Color Converter
Convert web colors across HEX (#3b82f6), RGB (rgb(59, 130, 246)), and HSL formats with interactive color preview and 1-click CSS copying.
CSS Minifier & Optimizer
Compress CSS stylesheets by stripping comments, spaces, and line breaks to minimize render-blocking stylesheet latency.
JavaScript Minifier & Code Compressor
Compress JavaScript files safely by stripping multi-line and single-line comments, superfluous spaces, and newline characters.
SHA-512 Cryptographic Hash Generator
Compute 512-bit (128 hexadecimal characters) SHA-2 family hashes for mission-critical checksums, blockchain verification, and token verification.
Text Diff Checker (Side-by-Side Compare)
Compare two versions of code, configuration files, or documents side-by-side to highlight additions, deletions, and line modifications.
HTML to Markdown Converter
Convert raw HTML documents and CMS rich text into clean Markdown syntax for static site generators (Astro, Hugo, Jekyll) and documentation.
User Agent String Parser & Client Inspector
Parse HTTP User-Agent header strings to identify browser names, software versions, operating systems, and device form factors.
JSON to TypeScript Interface Generator
Instantly transform raw JSON payloads into clean, idiomatic TypeScript interfaces and types for front-end React, Vue, and Node.js codebases.
Unix Timestamp & Epoch Converter
Convert between Unix timestamps (seconds & milliseconds) and human-readable UTC/local date formats with live current timestamp counter.
Free QR Code Generator Online
Create high-resolution QR codes for website URLs, contact info, and text strings. Custom sizes and immediate 1-click PNG image download.
WCAG Color Contrast Ratio Checker
Verify text and background color combinations against Web Content Accessibility Guidelines (WCAG 2.1) for Level AA and Level AAA compliance.
Harmonious Color Palette Generator
Create balanced design color palettes from any base HEX color: complementary, analogous, triadic, and monochromatic schemes with 1-click CSS copying.
HTML Entity Encoder & Decoder
Safely escape reserved HTML characters (<, >, &, ", ') into named or numeric entities to prevent XSS vulnerabilities and rendering glitches.
SVG Code Cleaner & Optimizer
Strip XML metadata, Illustrator/Figma export junk, and superfluous namespaces from SVGs to optimize asset payload weight for high Core Web Vitals.
CSS Pure Triangle Generator
Design pure CSS triangles using transparent border geometry with custom direction, dimensions, color picker, and 1-click CSS export.
cURL to JavaScript Fetch & Python Converter
Transform raw cURL command lines into clean, production-ready JavaScript fetch(), Python requests, or Axios API call snippets.
HTML to React JSX & TSX Converter
Transform raw HTML5 markup into compliant React JSX/TSX syntax: auto-replaces class with className, for with htmlFor, and self-closes tags.
CSS Grid Layout Generator
Design complex CSS grid structures with custom column/row counts and gaps. Preview your layout in real time and copy ready-to-use CSS rules.
CSS Flexbox Playground & Generator
Experiment with modern CSS Flexible Box properties visually. Tweak alignments, wrapping, and spacing with instant live preview and 1-click CSS export.
Online Regex Tester & Debugger
Evaluate regex patterns against sample text in real time with visual match highlighting, capture group breakdown, and ready-to-use common pattern presets.
Bcrypt Hash Generator & Verifier
Create salted Bcrypt password hashes and test password matches against existing hashes locally in your browser with zero network exposure.
JSON to JSON Schema Converter
Auto-generate structured draft-07 compliant JSON Schema definitions from any JSON input with type inference and automatic required properties.
URL Parser & Query String Editor
Dissect any web URL into its fundamental protocol, hostname, path, and query parameters. Edit or add parameters in a table and rebuild updated URLs instantly.
Markdown Table Generator & Editor
Create and edit structured Markdown tables with an interactive GUI table builder. Supports column alignment and instant 1-click Markdown copying.
Cron Expression Generator & Explainer
Generate valid crontab schedule expressions with visual interval controls and instant human-readable English translation for Linux and cloud schedulers.
Campaign URL Builder & UTM Generator
Construct validated marketing campaign URLs with proper UTM parameters for GA4, newsletters, social media, and paid ads with instant 1-click copy.
CIDR Subnet Calculator & IPv4 Range Finder
Instantly calculate network netmasks, broadcast addresses, usable IP address ranges, and total host capacities from any IP and CIDR prefix.
Tailwind CSS Color Palette Generator
Pick any base HEX color and automatically generate a balanced 10-shade palette (50, 100, 200, 300, 400, 500, 600, 700, 800, 900, 950) for your Tailwind UI.
Image to Base64 & Data URI Converter
Drop or select PNG, JPG, WebP, or SVG files to instantly encode them into Base64 Data URIs, HTML image tags, and CSS background rules without uploading.
Mock API Data & Fake JSON Generator
Generate realistic placeholder JSON datasets with customizable record counts for prototyping frontend interfaces and testing API workflows.
Visual HTML Table Generator
Build and customize structured HTML tables visually. Tweak table cells, headers, and alignments with instant 1-click semantic HTML export.
JSON Diff & Comparison Tool
Perform side-by-side structural comparison of two JSON payloads. Highlights modified, added, and deleted properties with zero server logging.
Open Graph & Social Share Preview Generator
Simulate social media share cards for Twitter, Facebook, and LinkedIn in real time. Validate image ratios and export ready-to-paste meta tags.
JSON-LD Schema Markup Generator
Generate structured schema.org markup in JSON-LD format to qualify for Google rich search results, review stars, and FAQ accordion snippets.
Google SERP Snippet Simulator & Pixel Calculator
Preview and optimize how your pages appear on Google search results. Real-time title pixel width warnings, mobile/desktop toggle, and rich star ratings.
cURL to Python Requests Converter
Convert raw cURL shell commands into production-ready Python code using the requests library. Supports authentication, headers, and JSON payloads.
HMAC Hash & Signature Generator
Generate cryptographic HMAC signatures with custom secret keys using the browser's hardware-accelerated WebCrypto API. Zero data transmitted over the network.
XML to JSON Converter
Parse and convert XML data into structured, indented JSON with zero server latency. Preserves tags, values, and attributes client-side.
8-Value CSS Border Radius Generator
Create organic blob shapes and custom corner curvatures using 8-value border-radius syntax. Visual sliders with instant copy-paste CSS.
CSS Text Shadow Generator
Build multi-layered, striking CSS text shadows with real-time typography preview. Adjust horizontal/vertical offsets, blur radius, and shadow color.
JSON Path Finder & Tree Inspector
Inspect and navigate nested JSON structures interactively. Click any key to copy its exact dot notation or JSONPath query directly to clipboard.
ASCII Text to Hex, Binary & Decimal Converter
Convert plain text into binary (01010011...), hexadecimal (53 65 63...), decimal, and octal encodings with instant 1-click copy.
SQL to JSON Converter
Convert SQL INSERT statements and database table dumps into structured JSON arrays. Automatically infers numbers, strings, and booleans.
JSON to XML Converter
Transform complex JSON payloads and arrays into clean, indented XML documents. Supports root element naming and nested structures.
TSV to JSON Converter
Convert tab-delimited text copied directly from Microsoft Excel or Google Sheets into structured JSON arrays of objects.
CSS Neumorphism (Soft UI) Generator
Design tactile Soft UI components with dual light and dark shadow physics. Sliders for elevation, blur, radius, and shape curvature.
Color Tints & Shades Generator
Produce an entire ramp of tints (white mixed) and shades (black mixed) from any brand color. Includes 1-click copy and WCAG contrast ratings.
HTML Entity Decoder & Encoder
Convert between HTML entities (named, decimal, hexadecimal) and literal characters with bidirectional instant conversion.
Lorem Ipsum Markdown Generator
Generate structured dummy Markdown documents with realistic headings, checklists, code blocks, tables, and blockquotes for SSG and doc testing.
User-Agent Generator & Header Library
Search, filter, and copy authentic User-Agent strings for desktop browsers, mobile devices, tablets, and search engine crawlers with 1-click copy.
Cron Expression Descriptor & Human Explainer
Convert standard 5-part crontab schedule expressions into clear, plain English descriptions with upcoming execution timestamps.
Mock JSON API Generator & Dummy Data
Instant mock JSON array generator with realistic user profiles, e-commerce products, financial orders, and ISO timestamps for API mocking.
CSS Clip-Path Shape Generator
Design geometric clip-path shapes including polygons, stars, hexagons, arrows, and speech bubbles with instant CSS code export.
SVG to Data URI Converter & CSS Inliner
Instantly encode raw SVG vector code into compact, URL-encoded Data URIs ready for CSS background-image and HTML tags.
Timestamp Difference & Duration Calculator
Calculate precise duration, days, hours, minutes, and working business days between two timestamps, epochs, or dates.
Meta Tags & Social Snippet Analyzer
Paste any HTML snippet or meta tags to analyze title lengths, meta descriptions, Open Graph cards, canonical tags, and SERP health.
Linux Chmod Permissions Calculator
Interactive 3x3 permission grid for Owner, Group, and Others. Instantly computes numeric octal masks, symbolic notation, SUID/SGID bits, and terminal commands.
IP Range to CIDR Subnet Calculator
Calculate the minimal set of CIDR subnet blocks covering any IP address range (IPv4). Ideal for cloud security groups, AWS VPC, UFW, and routing tables.
CSS Keyframes Animation Generator
Create smooth CSS @keyframes animations with interactive presets, timing functions, durations, iterations, and 1-click ready-to-paste CSS rules.
Base64 to Image Decoder & Previewer
Paste any Base64 encoded string or image Data URI to instantly decode, inspect width/height and file size, and download the original PNG, JPG, WebP, or SVG file.
Online DNS Record Lookup & Inspector
Lookup and audit DNS records across A, AAAA, MX, TXT, CNAME, NS, and SOA using high-speed DNS-over-HTTPS (DoH).
HTTP Security Headers Analyzer & Auditor
Analyze raw server response headers, detect missing security policies (HSTS, CSP, X-Frame-Options, Permissions-Policy), and export ready-to-paste Nginx and Apache configs.
UUID v7 & v4 Generator & Timestamp Inspector
Generate time-ordered, B-Tree index-friendly UUID v7 identifiers based on RFC 9562. Decode embedded millisecond timestamps and inspect versions.
SVG Path Visualizer & Bounds Inspector
Paste any SVG path data attribute to render interactive vector outlines, inspect total path length, bounding dimensions, and coordinate commands.
HTML Table to Markdown & CSV Converter
Transform raw HTML tables into clean, aligned GitHub Flavored Markdown (GFM) tables and spreadsheet-ready CSV with 1-click copy.
Image EXIF Metadata Stripper & Privacy Cleaner
Protect personal privacy by inspecting and stripping hidden EXIF metadata, GPS latitude/longitude, and camera models from photos before publishing online.
HTTP Archive (HAR) Analyzer & Performance Waterfall
Upload or paste browser DevTools network .har export files to analyze page load waterfalls, request counts, transfer weights, and HTTP status codes.
TOML to JSON & YAML Converter
Transform Tom's Obvious Minimal Language (TOML) files into clean, formatted JSON or YAML with instant client-side parsing and 1-click copy.
CSS Hex to Color Filter Converter
Calculate the exact CSS filter rules needed to transform a black (#000000) SVG icon or image into any custom target Hex, RGB, or HSL color.
Content Security Policy (CSP) Generator & Validator
Build robust Content-Security-Policy headers with interactive directive toggles, third-party service presets (GTM, AdSense, Stripe), and real-time security analysis.