Security

25 tools
Password Generator
Create cryptographically secure random passwords
Password Strength Checker
Evaluate password strength and detect weak patterns
Hash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes
Hash Verifier
Verify a value against a known hash
Base64 Encoder
Encode text or data to Base64
Base64 Decoder
Decode Base64 strings back to plain text
UUID Generator
Generate cryptographically secure v4 UUIDs
JWT Decoder
Decode and inspect JWT tokens without the secret
JWT Encoder
Create signed JWT tokens with custom payloads
SSL Certificate Checker
Verify SSL certificate validity and expiry for any domain
Security Headers Checker
Analyze HTTP security headers of any URL
DNS Lookup
Query DNS records (A, MX, TXT, CNAME, NS)
WHOIS Lookup
Query domain registration and ownership information
IP Reputation Checker
Check an IP against threat feeds and blacklists
Port Scanner
Check if common ports are open on a host
CORS Tester
Test preflight and CORS response headers for any endpoint
.htpasswd Generator
Generate bcrypt, APR1-MD5 or SHA-1 Apache password entries
CSP Header Generator
Build Content Security Policy headers with presets or custom directives
Email Spoofing Checker
Check SPF, DKIM and DMARC to assess spoofing risk
Entropy Analyzer
Detect high-entropy (encrypted/encoded) strings via Shannon entropy
2FA / TOTP Code Generator
Generate TOTP codes from a Base32 seed to test your 2FA implementation
Subdomain Enumerator
Discover common subdomains via wordlist DNS enumeration — www, api, admin and 60+ more
Fake Data Generator
Generate realistic test names, emails, addresses and UUIDs in English or Spanish

SEO

16 tools
SEO Title Generator
Generate optimized title tags under 60 characters
Meta Description Generator
Write compelling meta descriptions under 160 characters
SEO On-Page Analyzer
Analyze on-page SEO factors for any URL
Keyword Density Checker
Calculate keyword frequency and density in a text
Sitemap XML Generator
Generate a valid XML sitemap for your site
Robots.txt Generator
Build and validate robots.txt files
Schema Markup Generator
Generate JSON-LD structured data markup
Open Graph Generator
Create Open Graph meta tags for social sharing
Twitter Cards Generator
Generate Twitter Card meta tags
Canonical Tag Generator
Create canonical link elements to avoid duplicate content
H1–H6 Analyzer
Analyze heading structure and hierarchy of a page
Keyword Difficulty Checker
Estimate keyword difficulty based on competition
Internal Links Analyzer
Extract and analyze internal links on a page
Redirect Checker
Follow and trace the full redirect chain of a URL
SERP Preview Tool
Preview how your page appears in Google search results

Development

30 tools
JSON Formatter & Validator
Format, minify and validate JSON in real time
XML Formatter
Format and prettify XML documents
HTML Formatter
Beautify and indent raw HTML code
CSS Minifier
Minify and compress CSS stylesheets
JavaScript Minifier
Minify and compress JavaScript files
SQL Formatter
Format and beautify SQL queries
Regex Tester
Test regular expressions with live match highlighting
Cron Expression Parser
Understand any cron expression in plain English
Timestamp Converter
Convert Unix timestamps to human-readable dates and back
URL Encoder/Decoder
Encode and decode URL components
Color Converter
Convert between HEX, RGB, HSL and CSS color formats
Lorem Ipsum Generator
Generate placeholder text in any length
QR Code Generator
Generate QR codes for URLs, text or contacts
API Request Tester
Send HTTP requests and inspect responses
Diff Checker
Compare two texts and highlight differences side by side
JWT Debugger
Visually decode, verify and build JWT tokens
Chmod Calculator
Calculate Unix permission bits with click-to-toggle grid
Number Base Converter
Convert between binary, octal, decimal and hexadecimal
Markdown Previewer
Live split-pane Markdown editor and HTML renderer
HTTP Headers Viewer
Inspect all HTTP response headers and get a security grade
.gitignore Generator
Generate .gitignore for 20+ languages and frameworks
Bcrypt Generator
Hash and verify passwords with bcrypt, choose cost factor
CSV → JSON Converter
Convert CSV to JSON with auto delimiter detection
HTML Entity Encoder/Decoder
Encode text to HTML entities or decode them back to plain text
JSON → CSV Converter
Convert a JSON array of objects to CSV — auto-detects all columns
YAML ↔ JSON Converter
Convert between YAML and JSON for docker-compose, GitHub Actions and Kubernetes
SSH Key Info
Analyze a public SSH key — type, bit length, fingerprints and security rating
DNS Propagation Checker
Check if DNS changes have propagated across Google, Cloudflare, Quad9 and OpenDNS

AI

15 tools
Prompt Generator
Generate effective AI prompts for any use case
Prompt Improver
Enhance and optimize your existing prompts
AI Text Humanizer
Rewrite AI-generated text to sound more human
Text Summarizer
Summarize long documents while preserving key points
Content Rewriter
Rewrite content with a different tone or style
Grammar Checker
Detect and correct grammar and spelling errors
Blog Title Generator
Generate catchy and SEO-friendly blog post titles
SEO Description Generator
Write optimized meta descriptions for blog posts
Social Media Post Generator
Generate posts for LinkedIn, Twitter/X and Instagram
Hashtag Generator
Find relevant hashtags for your content
Professional Email Generator
Write professional emails for any situation
Support Response Generator
Generate helpful customer support replies
Business Idea Generator
Generate validated business ideas based on your skills
Brand Name Generator
Generate creative and memorable brand names
AI Text Detector
Detect whether a text was generated by AI

Design

19 tools
Color Palette Generator
Generate complementary, analogous and triadic palettes
Contrast Checker (WCAG)
Check WCAG AA/AAA contrast ratios between two colors
CSS Gradient Generator
Build linear and radial gradients with live preview
CSS Box-Shadow Generator
Create and preview CSS box-shadow values visually
Border-Radius Visualizer
Design and preview CSS border-radius interactively
Font Pairing Suggester
AI-powered Google Fonts pairing suggestions
Icon Finder
Search 500+ open-source icons with SVG copy and download
Image Color Extractor
Extract the dominant color palette from any image
Image Compressor
Compress PNG, JPG and WebP client-side — files never leave your browser
SVG Optimizer
Remove Inkscape/Illustrator metadata and unused namespaces to shrink SVGs
Favicon Generator
Upload any image and get PNG favicons at 16, 32, 48, 64, 128, 180, 192 and 512 px
Aspect Ratio Calculator
Resize images and videos keeping exact proportions — see common sizes for any ratio
Color Blindness Simulator
Simulate your palette for deuteranopia, protanopia, tritanopia and achromatopsia
Typography Scale Generator
Modular type scale from 12 classical ratios — CSS custom properties + Tailwind config
CSS Animation Generator
16 presets — fadeIn, bounce, shake, flip and more — with live preview and @keyframes output
Tailwind Color Finder
Find the nearest Tailwind color to any hex using perceptual Lab color distance
Placeholder Image Generator
Generate placeholder URLs from placehold.co, Picsum and via.placeholder for mockups
Image Metadata Viewer
Extract EXIF from JPEG — camera, lens, exposure settings, ISO, and GPS coordinates

Writing

18 tools
Plagiarism Checker
Detect duplicate sentences and repeated phrases in your text
Reading Level Analyzer
Score readability with Flesch-Kincaid, Gunning Fog and ARI
Tone Detector
AI-powered emotional tone and writing style analysis
TTS Script Formatter
Format text for text-to-speech: expand abbreviations, remove markdown
Press Release Generator
AI-generated professional press releases in AP style
Job Description Generator
Write clear, inclusive job descriptions with AI
Cover Letter Generator
Create tailored cover letters with AI
Text Case Converter
Convert text to camelCase, snake_case, SCREAMING_SNAKE, Title Case, kebab-case and more
Emoji Picker & Search
Instant client-side emoji search with category filter — click to copy, multi-select tray
Paraphrase Detector
Compare two texts for paraphrase (not exact copy) using Jaccard similarity on bigrams and trigrams
Cold Email Generator
Generate high-reply-rate cold B2B emails — no fluff, personalised opener, one clear CTA
LinkedIn Post Generator
Write high-engagement LinkedIn posts with scroll-stopping hooks and ideal character count
Product Description Generator
3 benefit-led e-commerce product descriptions in different copy angles, with SEO keywords
FAQ Generator
Paste content or a topic and get AI-generated FAQ with answers and JSON-LD schema markup
Tweet Thread Generator
Generate viral Twitter / X threads with hook, value body and CTA — each tweet under 280 chars
Headline Analyzer
Score your headline on power words, sentiment, length and emotional impact — grade A–F
Passive Voice Detector
Highlight passive-voice sentences and get a passive percentage score with fix tips
Sentence Rewriter
Rewrite any sentence or paragraph with AI — same meaning, clearer or different phrasing

Marketing

18 tools
A/B Test Calculator
Calculate statistical significance between two variants
UTM Builder
Build campaign tracking URLs with UTM parameters
Email Subject Line Tester
Score and improve your email subject lines
Landing Page Analyzer
Analyze CTA, headlines and structure of any landing page
Conversion Rate Calculator
Calculate and compare conversion rates across periods
Competitor Analyzer
Analyze any competitor page: title, meta, keywords, tech
Ad Copy Generator
Generate high-converting ad copy variations with AI
Newsletter Subject Generator
Create compelling newsletter subject lines with AI
Social Media Image Size Guide
Up-to-date dimensions for Instagram, Facebook, Twitter, LinkedIn, YouTube, TikTok & Pinterest
Email Signature Generator
Build an HTML signature to paste in Gmail, Outlook or Apple Mail
Bio Generator
Generate tailored bios for Twitter/X, LinkedIn and Instagram from one form
Buyer Persona Generator
AI-generated buyer personas with goals, pain points and outreach strategy
AIDA Framework Generator
Attention → Interest → Desire → Action copy for any product or landing page
Review Response Generator
Respond to positive and negative customer reviews professionally with AI
Social Media Bio Generator
AI bios for Twitter/X, Instagram, LinkedIn, TikTok, YouTube and Threads
Pricing Page Copy Generator
Generate headline, plan cards, FAQ and trust signals for your pricing page
Promo Campaign Generator
Full Black Friday or promo campaign — email, social, ads and hashtags with AI

WordPress

12 tools
Theme & Plugin Detector
Detect the active WordPress theme, child theme and plugins from any site URL
WordPress Salts Generator
Generate fresh cryptographic keys and salts from the official WordPress.org API
wp-config.php Generator
Generate a complete, hardened wp-config.php with fresh salts and custom table prefix
.htaccess Generator
Generate a WordPress .htaccess with hardening rules: block xmlrpc, protect wp-config, GZIP, browser caching
Child Theme Generator
Enter theme name and parent slug — download a ready-to-upload .zip with style.css and functions.php
REST API Tester
Test WordPress REST API endpoints with any HTTP method and optional Application Password auth
Cron & REST API Viewer
Check WP-Cron status, REST API availability, active namespaces and site info
Slug Generator
Convert any title (accents, emojis, special chars) to the exact slug WordPress would generate
Robots.txt Generator
Generate a WordPress-optimized robots.txt with Yoast/RankMath/AIOSEO sitemap support
AI Excerpt Generator
Paste post content and get an SEO-optimized WordPress excerpt generated by AI
Login Exposure Checker
Checks if wp-login.php, wp-admin and xmlrpc.php are publicly accessible
DB Prefix Generator
Generate a random secure table prefix to replace wp_ — includes SQL migration and wp-config.php snippet

Utilities

18 tools
Unit Converter
Convert between length, mass, temperature, speed, area and volume units
Time Zone Converter
"9am Madrid = X in New York" — convert any time between two time zones
Pomodoro / Focus Timer
Customisable Pomodoro timer — set work, short break and long break intervals
Character & Word Counter
Count characters and words with live Twitter, LinkedIn and Instagram limits
IP Geolocation
Look up your IP or any public IP — country, city, ISP and coordinates
Loan & Mortgage Calculator
Calculate monthly payments, total cost and interest with full amortisation schedule
Age Calculator
Calculate exact age or time between two dates in years, months, days and hours
Percentage Calculator
Five-mode calculator — X% of Y, what % is X of Y, % change, add or subtract a %
World Clock / Meeting Planner
Display current time across 12 timezones and find common working hours for meetings
Mortgage Calculator
Monthly payment, total interest and full amortization table. Supports extra payments
Tip Calculator
Compute tip and split bill — shows per-person amount and comparison across tip percentages
BMI Calculator
Body Mass Index in metric or imperial — category, scale bar and healthy weight range
Calories Burned Calculator
Calories burned from 35+ activities using MET values. Compare and see food equivalents
Compound Interest Calculator
Investment growth with compounding — add monthly contributions, choose frequency
Reading Time Estimator
Estimate reading time for slow/average/fast readers plus word count and top keywords
Numerology Calculator
Life Path, Expression, Soul Urge and Personality numbers with detailed meanings
Roman Numeral Converter
Convert Arabic ↔ Roman numerals in both directions (1–3999) with nearby reference table
Barcode Generator
Generate Code 128, EAN-13, UPC-A, Code 39 and more barcodes. Download as SVG or PNG

Business

14 tools
Quote Generator
Create professional client quotes and estimates
Invoice Generator
Generate professional invoices exportable as PDF
VAT Calculator
Calculate VAT on prices with or without tax included
Income Tax Calculator
Estimate IRPF income tax withholding
Profit Margin Calculator
Calculate gross and net profit margins
Break-even Calculator
Find the exact break-even point for your business
ROI Calculator
Calculate return on investment and payback period
Selling Price Calculator
Calculate the ideal selling price based on costs and margin
Contract Generator
Generate basic service and freelance contracts
Business Proposal Generator
Create professional business proposals
Privacy Policy Generator
Generate a GDPR-compliant privacy policy
Terms & Conditions Generator
Generate terms and conditions for your website or app
GDPR Clauses Generator
Generate GDPR-compliant data processing clauses
Basic Financial Planner
Plan income, expenses and monthly savings goals