All 55 tools
Every tool runs in your browser. No account, no uploads, no limits.
Financial Calculators
View categoryLoan Calculator
Work out your repayment, total interest and true cost
Compound Interest Calculator
See what your savings grow into, with or without regular contributions
Simple Interest Calculator
Flat interest on the original principal, with the compound gap shown
VAT Calculator
Add tax to a net price or extract it from a gross one
Discount Calculator
Final price, amount saved, and what stacked discounts really come to
Percentage Calculator
Three percentage questions, each with its own answer
Salary Calculator
Convert any pay rate into hourly, weekly, monthly and annual
Take-home Salary Calculator
Estimate what actually lands in your account after deductions
Retirement Calculator
How big your pot gets — and how long it actually lasts
Age Calculator
Exact age in years, months and days — plus the total in every unit
Developer Tools
View categoryJSON Formatter
Beautify or minify JSON, with errors pinned to the line
JSON Validator
Check JSON syntax and see the shape of your data
JSON Compare
Structural diff — ignores formatting and key order
UUID Generator
Bulk v4 and v7 UUIDs from your browser's crypto API
Base64 Encode / Decode
Full Unicode support, including URL-safe Base64
URL Encode / Decode
Percent-encoding, with the component distinction made explicit
JWT Decoder
Inspect header, payload and expiry — no secret required or accepted
Regex Tester
Live matches, highlighted in context, with capture groups
SQL Formatter
Break long queries onto readable clause lines
HTML Formatter
Indent markup by nesting depth, preserving pre and textarea
CSS Formatter
Beautify or minify stylesheets, including nested at-rules
JavaScript Formatter
Structural indentation that respects strings and comments
YAML Validator
Catches tabs, duplicate keys and colon spacing, with line numbers
XML Formatter
Validate well-formedness, then indent by depth
Unix Timestamp Converter
Epoch to date and back, with the unit detected for you
Text Tools
View categoryWord Counter
Count words, characters, sentences, and reading time
Case Converter
UPPER, lower, Title, camelCase, snake_case and more
Text Diff
Compare two texts and highlight line-by-line differences
Lorem Ipsum Generator
Generate placeholder text in words, sentences, or paragraphs
Markdown Preview
Render Markdown to HTML and preview it instantly
Text Reverse
Reverse characters, words, or lines in any text
Line Sorter
Sort lines alphabetically, by length, or in reverse
Duplicate Line Remover
Remove repeated lines and keep only unique entries
Text to Slug
Convert any title or phrase into a URL-friendly slug
Whitespace Cleaner
Trim, collapse, or strip whitespace from any text
SEO Tools
View categorySERP Preview
See how your page looks in Google search results
Meta Tag Generator
Generate HTML meta tags for title, description, robots and more
Open Graph Generator
Generate og: meta tags for rich social media previews
Twitter Card Generator
Generate Twitter / X Card meta tags for link previews
Robots.txt Generator
Build a robots.txt file with allow, disallow, and sitemap rules
FAQ Schema Generator
Generate FAQ schema.org JSON-LD for rich results
Canonical Tag Generator
Generate a canonical link tag from any URL
Keyword Density Checker
Check how often a keyword appears in your content
Hreflang Generator
Generate hreflang link tags for multilingual and regional pages
Sitemap XML Generator
Generate an XML sitemap from a list of URLs
Security Tools
View categoryPassword Generator
Cryptographically secure passwords, generated entirely in your browser
Password Strength Checker
Instant entropy analysis and actionable improvement tips
Hash Generator
SHA-256, SHA-512, and SHA-1 hashes via the browser Web Crypto API
HMAC Generator
Sign messages with HMAC-SHA256 or HMAC-SHA512, entirely in your browser
Random Token Generator
Cryptographically secure tokens in hex, base64url, alphanumeric, or numeric
Image Tools
View categoryImage Resizer
Resize images to exact pixel dimensions in your browser
Image Format Converter
Convert images between PNG, JPEG, and WebP instantly
Image Compressor
Reduce image file size by adjusting quality in your browser
Base64 Image Encoder
Encode images to Base64 data URIs and decode them back
Image Color Picker
Hover over any image pixel to instantly read its color values