43 tools · private by design
Free online tools
Converters, formatters, calculators and file utilities that run entirely in your browser. Your files are never uploaded to a server, so they work offline and stay private.
Developer tools
Format, decode and inspect the things you work with every day.
- NewOpen
Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to text, right in your browser. Handles emoji and…
- NewOpen
HTML Entity Encoder & Decoder
Escape HTML so tags display as text, or decode entities back into characters. Supports all…
- NewOpen
JWT Decoder
Decode a JSON Web Token to read its header, payload, and expiry. Runs entirely in your browser…
- NewOpen
Regex Tester
Test a regular expression against sample text and see every match, capture group, and named…
- NewOpen
URL Encoder & Decoder
Percent-encode text for URLs or decode an encoded URL back to readable text. Choose component…
- Open
Image to Base64
Convert images to Base64 data URIs in your browser. No upload. Copy the result for use in HTML…
- Open
JSON Formatter
Format and minify JSON in your browser. Paste JSON, click Format or Minify. No data sent to…
- Open
UUID Generator
Generate UUIDs (v4) in your browser. One click for a single UUID or multiple. No server, no…
Text tools
Clean up, count, compare and transform text.
- NewOpen
Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case,…
- NewOpen
Line Sorter & Duplicate Remover
Sort lines alphabetically or by length, remove duplicates, trim spaces and drop blank lines.…
- NewOpen
Lorem Ipsum Generator
Generate placeholder text by paragraph, sentence or word count for mockups and layout tests.…
- NewOpen
Text Diff Checker
Compare two blocks of text and see exactly which lines were added or removed. Ignore case or…
- NewOpen
URL Slug Generator
Turn titles into clean, SEO-friendly URL slugs. Handles accents, punctuation, stop words and…
- NewOpen
Word Counter
Count words, characters, sentences, and paragraphs as you type, with reading time and the…
Image tools
Resize, convert and compress images without uploading them.
- NewOpen
Favicon Generator
Turn one logo into every favicon size a website needs — a multi-resolution favicon.ico plus…
- NewOpen
Image Compressor
Compress JPG, PNG and WebP images in your browser with a live before/after preview. Nothing is…
- NewOpen
Image Format Converter
Convert images between WebP, PNG and JPEG in bulk. Drop several files at once — everything…
- Open
Image Resizer
Resize images in your browser. Set width and height, download the result as PNG. No server…
- Open
JPG to ICO Converter (Free Online)
Turn JPEG images into ICO icon files in your browser. Create favicons and Windows icons from…
- Open
PNG to ICO Converter (Free Online)
Convert PNG images to ICO icon files in your browser. Pick icon sizes (16–256px), download a…
- Open
SVG to ICO Converter (Free Online)
Convert SVG vector images to ICO icon files in your browser. Rasterize your logo to multiple…
- Open
WebP to ICO Converter (Free Online)
Convert WebP images to ICO icon files in your browser. Build multi-resolution favicons and…
PDF tools
Merge and build PDFs entirely in your browser.
Converters
Units, timestamps, number bases and data formats.
- NewOpen
Number Base Converter
Convert between binary, octal, decimal, hex and base 36 with exact precision for 64-bit…
- NewOpen
QR Code Generator
Create a free QR code for a link, Wi-Fi network, email or phone number. Custom colours,…
- NewOpen
Unit Converter
Convert length, weight, temperature, volume, data, speed and area between metric and imperial…
- NewOpen
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Detects seconds vs milliseconds…
Calculators
Everyday maths: percentages, loans, dates and health.
- NewOpen
BMI Calculator
Calculate your Body Mass Index in metric or imperial units, with the result placed on the…
- NewOpen
Date Difference Calculator
Count the days between two dates, including working days only, plus an exact years/months/days…
- NewOpen
Loan & EMI Calculator
Calculate the monthly payment on a loan or mortgage, plus total interest and how much of your…
- NewOpen
Percentage Calculator
Work out what X% of Y is, what percentage one number is of another, and percentage increase or…
- Open
Age Calculator
Calculate your exact age in years, months, and days. Find out how many days you have lived.
Security & privacy
Passwords, hashes and checks that never leave your device.
- NewOpen
Password Strength Checker
Test how resistant a password is to guessing, with an entropy estimate, crack-time figure and…
- Open
Hash Generator
Hash text with SHA-256 or SHA-1 in your browser. No data leaves your device.
- Open
Password Generator
Generate a strong, random password. Choose length and include numbers, symbols, and uppercase.
Colour & design
Pick, convert and generate colours and palettes.
Random & fun
Dice, coins, names and decisions when you can't pick.
- Open
Coin Flip
Flip a coin online for a random heads or tails. Instant, fair, and free.
- Open
Dice Roller
Roll one or more dice online. Supports 4, 6, 8, 10, 12, and 20-sided dice.
- Open
Random Name Generator
Generate random names for characters, babies, projects, or fun.
- Open
Random Number Generator
Generate random numbers instantly. Pick a min and max, get a random number in one click.
- Open
Yes or No Generator
Get an instant yes or no answer for quick decisions.