AI Prompt Generator
Generate structured, high-performance prompts for ChatGPT, Claude, Gemini, and Perplexity with customizable roles, constraints, and quality scoring.
AI Prompt Improver
Transform basic or underperforming prompts into clear, precise, production-grade instructions with before/after score analysis.
SEO Prompt Generator
Generate high-ranking SEO content prompts optimized for search intent, keyword placement, headings structure, and featured snippets.
Blog Post Prompt Generator
Create complete blog writing prompts with audience calibration, required headings, FAQs, AEO snippets, and GEO entity scaffolding.
AI Image Prompt Generator
Structure photorealistic and stylized image prompts for Midjourney, DALL-E 3, Stable Diffusion, and Imagen with lighting, camera, and negative constraints.
AEO Prompt Generator
Optimize content for AI Overviews, Perplexity, and voice search with answer-first formatting, clear definitions, and question-based headings.
GEO Prompt Generator
Structure content for Generative Engine Optimization (GEO) with entity taxonomies, verifiable data points, source citations, and zero fluff.
Social Media Prompt Generator
Craft viral hooks, carousel outlines, and engaging social posts for LinkedIn, X (Twitter), Instagram, Threads, and Facebook.
YouTube Prompt Generator
Generate high-retention YouTube scripts, 30-second hooks, clickable title ideas, video descriptions with timestamps, and Shorts scripts.
System Prompt Generator
Build robust, safe, and authoritative system prompts for custom GPTs, AI agents, developer copilots, and production chatbots.
JSON Formatter
Format, beautify, and inspect JSON data instantly with customizable indentation.
JSON to CSV Converter
Convert JSON arrays into flat CSV tabular data for Excel or Google Sheets.
JSON Diff Checker
Compare two JSON objects side-by-side to highlight additions, deletions, and modifications.
Base64 Encoder
Encode plain text or binary strings into safe Base64 representation.
JWT Decoder
Decode and inspect JSON Web Token headers, payloads, signatures, and expiration status.
URL Encoder
Encode special query parameter characters into percent-encoded URL values.
URL Decoder
Decode percent-encoded URI strings back into standard readable text.
HTML Entity Encoder
Convert sensitive HTML characters like <, >, &, and " into HTML entities.
HTML Entity Decoder
Decode HTML entity strings (like < or &) into raw characters.
Hex String Converter
Convert text strings to hexadecimal byte values and vice versa.
UUID / GUID Generator
Generate cryptographically strong Version 4 UUIDs or bulk unique IDs.
Password Generator
Create strong, customizable passwords with entropy strength estimation.
Random String Generator
Generate custom alpha-numeric random keys, tokens, or alphanumeric strings.
QR Code Generator
Generate high-resolution QR codes for URLs, text, Wi-Fi networks, and contact details.
Hash Generator (MD5, SHA-256)
Compute MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes for text.
Lorem Ipsum Generator
Generate placeholder text by paragraphs, words, or sentences for UI mockups.
Mock Data JSON Generator
Generate mock JSON arrays of users, products, addresses, and timestamps for testing.
HTML Formatter & Beautifier
Indentation, cleanup, and markup formatting for raw HTML code.
CSS Formatter & Beautifier
Format, align rules, and structure unformatted CSS stylesheets.
Meta Tag Generator
Generate essential HTML meta tags for title, description, viewport, and keywords.
Open Graph Meta Generator
Generate og:title, og:image, and Twitter Card meta tags for rich social media sharing previews.
Robots.txt Generator
Create valid robots.txt rules to guide search engine crawlers across site paths.
Color Converter (HEX, RGB, HSL)
Convert color codes between HEX, RGB, HSL, and HSV with live palette picker.
PX to REM Converter
Convert CSS Pixel measurements to relative REM units based on base font size.
CSS Gradient Generator
Create linear and radial CSS background gradients with custom color stops.
CSS Box Shadow Generator
Visually design CSS box shadows with offset, blur, spread, color, and inset controls.
CSS Flexbox Playground
Interactive visual tool to test flex-direction, justify-content, align-items, and flex-wrap rules.
Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, kebab-case, snake_case, and PascalCase.
Word & Character Counter
Count words, characters, sentences, paragraphs, and estimated reading time.
Remove Duplicate Lines
Deduplicate list lines, trim whitespace, and sort output alphabetically.
Text Diff Checker
Compare two text blocks side-by-side to highlight added, modified, or removed lines.
Regex Tester & Debugger
Test regular expression patterns against test strings with real-time match highlighting.
SQL Formatter & Beautifier
Format, beautify, and align SQL queries across MySQL, PostgreSQL, and SQLite syntax.
Unix Timestamp Converter
Convert Unix epoch timestamps (seconds & milliseconds) to human readable date-times and vice versa.
Number Base Converter
Convert numbers between Binary (Base 2), Octal (Base 8), Decimal (Base 10), and Hexadecimal (Base 16).
Markdown Live Previewer
Write Markdown on the left and see formatted HTML rendering in real-time on the right.
.gitignore File Generator
Generate .gitignore files tailored to Node, React, Python, macOS, VS Code, and Go environments.
Conventional Commit Builder
Construct clean, standardized Conventional Commit messages (feat, fix, docs, refactor, chore).
Image to Base64 Converter
Convert local image files into Base64 data URI strings for CSS and HTML embedding.
Base64 to Image Converter
Decode Base64 image data URIs back into downloadable PNG or JPG files.
Image Resizer & Compressor
Resize and compress image dimensions (width/height) using browser Canvas API.
Percentage Calculator
Calculate percentage values, percentage of total, and percentage differences with step-by-step formulas.
Percentage Increase Calculator
Calculate the percentage growth or increase from an initial value to a new value.
Percentage Decrease Calculator
Calculate the percentage reduction, drop, or decrease from an initial value to a new value.
Average Calculator
Calculate arithmetic mean, median, mode, range, sum, count, and standard deviation for any dataset.
Ratio Calculator
Simplify ratios to lowest terms, find greatest common divisors (GCD), and compute equivalent scaled ratios.
Proportion Calculator
Solve for missing values in proportional equations (A / B = C / D) using cross multiplication.
Discount Calculator
Calculate sale prices, total savings, and final costs after percentage discounts and optional sales tax.
Profit Margin Calculator
Calculate gross profit, profit margin percentage, and markup percentage from cost and revenue.
Markup Calculator
Calculate the optimal selling price, gross profit, and profit margin based on item cost and desired markup.
VAT Calculator
Calculate Value Added Tax (VAT), gross prices, and net prices in inclusive or exclusive modes.
GST Calculator
Calculate Goods and Services Tax (GST) with CGST, SGST, IGST breakdowns for inclusive and exclusive amounts.
Age Calculator
Calculate exact chronological age in years, months, days, weeks, hours, and find days until next birthday.
Date Difference Calculator
Calculate the exact number of days, weeks, months, years, and business days between two calendar dates.
Time Duration Calculator
Calculate elapsed time, hours, minutes, and decimal hours between two clock times.
Unit Converter
Unified multi-category unit converter for length, weight, temperature, speed, area, volume, and data storage.
Length Converter
Convert lengths and distances across millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.
Weight Converter
Convert mass and weight between milligrams, grams, kilograms, metric tons, ounces, pounds, and stones.
Temperature Converter
Convert temperatures between Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R) with benchmark scales.
Speed Converter
Convert velocity and speed between km/h, mph, m/s, ft/s, knots, and Mach numbers.
Area Converter
Convert surface areas across square meters, square feet, square inches, square kilometers, acres, and hectares.
Volume Converter
Convert volume and fluid capacity between liters, milliliters, cubic meters, gallons, quarts, pints, and fluid ounces.
Data Storage Converter
Convert digital storage sizes across Bits, Bytes, KB, MB, GB, TB, PB (Decimal 1000) and KiB, MiB, GiB, TiB (Binary 1024).
Time Zone Converter
Convert times across global time zones (UTC, EST, PST, GMT, CET, IST, JST, AEST) with synchronized world clocks.
Binary Converter
Convert Binary (Base 2) to ASCII text, Decimal (Base 10), Hexadecimal (Base 16), and Octal (Base 8).
HTTP Header Analyzer
Inspect and evaluate HTTP response headers for security flaws, missing CORS policies, and caching headers.
CSP Header Generator
Generate Content-Security-Policy (CSP) headers with custom script, style, image, and font directives.
SRI Hash Generator
Generate Subresource Integrity (SRI) SHA-256, SHA-384, and SHA-512 hashes for secure CDN script and stylesheet tags.
Basic Auth Header Generator
Create standard Authorization: Basic headers by encoding username and password credentials to Base64.
Bearer Token Generator
Format Bearer Token authorization headers for JWT, OAuth 2.0, and REST API testing.
CORS Header Generator
Configure Cross-Origin Resource Sharing (CORS) headers for Express, Nginx, Apache, and Cloudflare.
Set-Cookie Header Builder
Build secure Set-Cookie headers with Secure, HttpOnly, SameSite, Max-Age, and Path flags.
Cache-Control Header Generator
Generate HTTP Cache-Control headers with max-age, s-maxage, immutable, no-cache, and stale-while-revalidate directives.
MIME Type Lookup
Search and inspect standard MIME types, file extensions, and Content-Type headers.
HTTP Status Code Reference
Browse, search, and understand HTTP response status codes (1xx, 2xx, 3xx, 4xx, 5xx) with RFC explanations.
Port Number Reference
Search common network and developer ports (HTTP, HTTPS, SSH, MySQL, PostgreSQL, Redis, MongoDB).
URL Parser & Inspector
Parse URLs into protocol, host, port, path, query parameters, and hash fragments with structured editing.
Domain & Hostname Extractor
Extract root domains, subdomains, hostnames, and TLDs from URLs or bulk link lists.
URL Query Parameter Builder
Build and edit URL query parameter strings with automatic encoding, sorting, and key-value management.
URL Cleaner & Normalizer
Clean URLs by stripping UTM marketing tags, tracking tokens, duplicate slashes, and click identifiers.
URL List Cleaner & Deduplicator
Deduplicate, validate, sort, and clean bulk lists of URLs with customizable protocol and trailing slash rules.
cURL Command Parser
Parse cURL commands into structured HTTP requests, headers, methods, and JSON request bodies.
cURL to Fetch Converter
Convert cURL commands to JavaScript Fetch API code snippets (ES6 async/await and TypeScript).
cURL to Axios Converter
Convert cURL commands into Axios HTTP client requests with async/await and TypeScript types.
API Mock Response Generator
Generate realistic mock REST API responses for users, products, orders, authentication, and paginated lists.
API Error Response Generator
Generate standard API error payloads compliant with RFC 7807 (Problem Details for HTTP APIs).
SQL CREATE TABLE Generator
Design database tables and generate CREATE TABLE DDL statements for PostgreSQL, MySQL, SQLite, and SQL Server.
SQL ALTER TABLE Query Builder
Generate SQL ALTER TABLE commands to add, drop, rename, and modify columns and constraints.
SQL Index Generator
Generate CREATE INDEX, UNIQUE INDEX, and composite index statements with partial WHERE clauses.
SQL IN Clause List Generator
Convert raw lists of IDs, strings, or UUIDs into formatted, quoted, and comma-separated SQL IN (...) clauses.
SQL Bulk INSERT Values Generator
Transform CSV or tab-separated data into multi-row SQL INSERT INTO ... VALUES (...) statements.
Markdown Table Generator
Interactive visual spreadsheet editor for creating, editing, and aligning GitHub-flavored Markdown tables.
Markdown Table to JSON Converter
Convert Markdown tables into structured JSON arrays of objects with automatic type parsing.
Markdown Table of Contents (TOC) Generator
Generate clean Table of Contents anchor links from Markdown headers (# H1, ## H2, ### H3).
Markdown & Shields Badge Builder
Design custom Shields.io badges for GitHub READMEs, package versions, build status, and tech stacks.
Open Source License Generator
Generate standard open-source software license files (MIT, Apache 2.0, GPLv3, BSD, ISC, Unlicense).
Open Graph & Social Card Previewer
Generate Open Graph meta tags and preview real-time card appearances on Facebook, Twitter, LinkedIn, and Discord.
Twitter / X Card Meta Tag Generator
Build Twitter Card tags (summary, summary_large_image, app, player) for optimal sharing on X/Twitter.
HTML Meta Tag Generator
Complete SEO and social meta tag builder including viewport, charset, canonical, robots, OG, and theme-color tags.
FAQ Schema (JSON-LD) Generator
Generate Google-compliant FAQPage structured data JSON-LD schemas for rich snippets in search results.
Pixel to REM / EM Calculator
Convert Pixel (px) values to CSS REM and EM units with customizable root base font sizes (16px default).
Device Screen Resolution Reference
Comprehensive database of viewport widths, device pixel ratios (DPR), and CSS resolutions for iPhones, iPads, Android, and laptops.
Viewport & Breakpoint Dimension Helper
Calculate fluid viewport units (vw, vh, vmin, vmax, dvh) and view matching responsive media query breakpoints.
Bulk UUID v4 Generator
Generate up to 1,000 cryptographically secure UUID v4 identifiers at once in plain text, JSON, or SQL formats.
Test Credit Card Generator (Luhn-Compliant)
Generate mock credit card numbers for testing payment gateways (Stripe, PayPal, Braintree) with valid Luhn checksums.
AI Function Calling Schema Generator
Build function calling tool definitions and JSON schemas for OpenAI GPT-4, Google Gemini, and Anthropic Claude.
Structured Output JSON Schema Generator
Generate strict response_format JSON schemas for OpenAI Structured Outputs and Gemini responseSchema.
Vector Embedding Chunk Splitter
Split text and Markdown documents into overlapping chunks for RAG pipelines, LangChain, LlamaIndex, and vector databases.
Mermaid Flowchart Generator
Create Mermaid.js flowcharts and process diagrams with visual node connectors, direction controls, and live syntax generation.
Mermaid Sequence Diagram Builder
Design actor-to-actor message flows, API interactions, and asynchronous sequence diagrams in Mermaid.js syntax.
Mermaid ER Diagram Builder
Create Entity Relationship (ER) database diagrams in Mermaid syntax with cardinalities and entity attributes.
Mermaid Gantt Chart Generator
Build project roadmaps, sprint schedules, and milestone Gantt charts using Mermaid.js syntax.
GeoJSON Feature & Geometry Builder
Build valid GeoJSON FeatureCollection, Point, LineString, and Polygon objects with custom properties.
Geographic Bounding Box Calculator
Calculate minimum/maximum bounding box (BBOX) coordinates [minLon, minLat, maxLon, maxLat] from coordinate lists.
Git Commit Message Builder
Draft clear, structured Git commit messages following standard industry conventions and team guidelines.
Conventional Commits Generator
Build standardized Conventional Commits (feat, fix, docs, refactor, test, chore, perf) with scopes and breaking changes.
Git Alias Generator
Generate productive Git shortcut aliases for .gitconfig (status, checkout, pretty logs, branch pruning).
Git Branch Name Generator
Format consistent Git branch names with prefixes (feature/, bugfix/, hotfix/, chore/) and sanitized kebab-casing.
Crontab & Schedule Expression Generator
Generate, test, and explain Cron schedule expressions (Minute, Hour, Day of Month, Month, Day of Week) in plain English.
Semantic Versioning (SemVer) Calculator
Calculate next Major, Minor, Patch, and Pre-release version numbers based on SemVer 2.0.0 rules.
CSS Glassmorphism Generator
Create frosted glass UI effects with customizable backdrop-filter blur, background opacity, borders, and shadows.
CSS Clamp & Fluid Typography Calculator
Generate responsive fluid typography and spacing using CSS clamp(min, preferred, max) without media queries.
CSS Aspect Ratio Calculator
Calculate aspect ratios (16:9, 4:3, 1:1, 21:9), dimensions, and modern CSS aspect-ratio properties.
CSS Specificity Calculator
Calculate and compare CSS selector specificity scores (Inline, IDs, Classes/Attributes/Pseudo-classes, Elements).
JSONPath Evaluator & Finder
Query and extract deep properties from complex JSON objects using JSONPath expressions ($..store.book[*].author).
JSON to JSON Schema Generator
Infer and generate JSON Schema (Draft-07, Draft 2020-12) from sample JSON payloads with type detection.
JSON Flatten & Unflatten Utility
Flatten deeply nested JSON objects into dot-notated key paths (user.address.city) and reconstruct unflattened JSON.
JSON Key Sorter
Alphabetically sort object keys recursively in JSON documents for clean diffing and deterministic serialization.
JSON String Escape / Unescape
Escape quotes, newlines, and backslashes in JSON strings for embedding in code, and unescape stringified JSON.
JSON to JSON Lines (NDJSON) Converter
Convert standard JSON arrays to newline-delimited JSON (JSON Lines / NDJSON / .jsonl) and vice versa.