Free Utility Tools

Everyday helpers for personal and office work in one place: percentage, discount, age and date-difference calculators, Thai land-unit conversion (rai, ngan, wah), PDF merging and splitting, signature drawing, QR reading from an image, password generation and a name-picker wheel — plus developer staples like JSON formatting, regex testing, 2FA codes and DNS lookups. Nearly all of them run in your browser, so your files and text never leave your device.

TOTP / 2FA Code Generator Generate 2FA codes offline — your secret stays in the browser Utilities Password Generator Build strong random passwords and test any password Utilities Cookie Consent Banner Generator Copy-paste PDPA/GDPR cookie banner — no code Utilities Cookie Inspector Decode Cookie & Set-Cookie headers into a readable table Utilities JSON Formatter & Validator Beautify, minify and validate JSON in your browser Utilities Base64 & Data URI Converter Encode text, files and images to Base64 — UTF-8 safe, all in your browser Utilities Cron Expression Builder Build and decode cron schedules in plain language Utilities DNS Lookup Check A, MX, TXT, NS and more for any domain Utilities Proxy Checker Test if an HTTP/HTTPS proxy is alive and see its exit IP Utilities Disposable Email Checker Flag temporary and throwaway email domains before they pollute your signups Utilities Password Breach Checker See if a password leaked in a data breach — privately Utilities User-Agent Parser & Builder Parse any User-Agent, or build a realistic one for cross-device QA Utilities Card BIN Lookup & Luhn Validator Check a card number with the Luhn algorithm and identify its network and BIN Utilities Random Face Generator AI-generated human faces for avatars and mockups Utilities Percentage Calculator Work out any percentage — X% of a number, % change, increase or decrease Utilities Discount Calculator Work out the final price after stacked discounts, or find the discount percentage Utilities Salary Converter Convert pay between hourly, daily, weekly, monthly and yearly Utilities Age Calculator Find your exact age in years, months and days, plus the countdown to your next birthday Utilities BMI Calculator Calculate your body mass index and see your healthy weight range Utilities Date Difference Calculator Count the days between two dates, or add and subtract from a date Utilities Unit Converter (Thai Land Units) Convert rai, ngan and square wah plus length, weight, area, volume, temperature and data Utilities Unix Timestamp Converter Convert Unix epoch timestamps to human dates, ISO 8601, RFC 2822 and back Utilities Color Contrast Checker Check WCAG contrast ratio and convert HEX, RGB and HSL colours Utilities Image to Base64 Converter Convert an image to a Base64 data URI in your browser, with ready-to-paste HTML and CSS Utilities QR Code Decoder Read a QR code from an image — upload, drag or paste and see the decoded text Utilities Hash Generator Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes from any text Utilities UUID Generator Generate random UUID v4 identifiers instantly in your browser Utilities Regex Tester Build and test regular expressions live, with match highlighting and captured groups Utilities .htaccess Redirect Generator Generate 301 and 302 redirect rules for your Apache .htaccess file Utilities Privacy Policy & Terms Generator Generate a Privacy Policy and Terms & Conditions for your website in seconds Utilities Spin Wheel Picker Paste a list of names or prizes and spin the wheel for a fair random winner Utilities Merge & Split PDF Combine several PDFs into one, or split and extract pages — in your browser, nothing uploaded Utilities Signature Maker Draw or type your signature and download it as a transparent PNG Utilities Timer, Stopwatch & Pomodoro Countdown timer, stopwatch with laps, and a Pomodoro focus timer Utilities SRT Subtitle Shifter & Converter Fix out-of-sync subtitles and convert between SRT and VTT Utilities