Free tools
Free online tools
Every tool runs locally in your browser. Pick one and use it without an account.
Generators
QR Code Generator
Turn a link or any text into a downloadable PNG QR code. Static, never expires.
Open tool →Wi-Fi QR Code Generator
Let guests join your Wi-Fi by scanning a code. WPA/WPA2/WPA3, WEP and open networks.
Open tool →Password Generator
Strong random passwords with custom length and character sets, plus entropy in bits.
Open tool →UUID Generator
Generate 1 to 50 random UUID v4 values and copy them all at once.
Open tool →Text tools
Word Counter
Live word, character, sentence and paragraph counts with reading time.
Open tool →Case Converter
Switch text between UPPER, lower, Title, Sentence, camelCase, snake_case and kebab-case.
Open tool →Regex Tester
Test a JavaScript regular expression against your text, inspect groups and preview replacements.
Open tool →Markdown Preview
Write Markdown and see a rendered preview instantly, including GFM tables and task lists.
Open tool →Developer tools
Converters & encoders
Base64 Encoder
Encode text to Base64 or decode it back, with UTF-8 and URL-safe support.
Open tool →URL Encoder
Percent-encode a value or a full URL, and decode %xx sequences back to text.
Open tool →Byte Size Converter
Convert between bytes, kB/MB/GB (decimal) and KiB/MiB/GiB (binary).
Open tool →Unit Converter
Length, weight, volume, area, speed, storage and temperature in one place.
Open tool →Color Converter
HEX, RGB and HSL conversion plus contrast against white and black.
Open tool →PX to REM Converter
Convert px, rem and em with a configurable root and parent font size, plus a common size table.
Open tool →Time & date
Unix Timestamp Converter
Epoch seconds or milliseconds to ISO, UTC, local time and back.
Open tool →Cron Expression Explainer
Turn a five-field cron expression into plain English and the next five run times.
Open tool →Calculators
BMI Calculator
Body mass index from metric or imperial measurements, with category and healthy range.
Open tool →Percentage Calculator
Three everyday percentage questions answered at once.
Open tool →Age Calculator
Exact age in years, months and days, plus total days and next birthday.
Open tool →Reference lookup
HTTP Status Code Lookup
Search HTTP status codes by number, reason phrase or symptom, and open the full reference entry.
Open tool →MIME Type Lookup
Find the Content-Type for a file extension and see what each media type is used for.
Open tool →Port Lookup
Search TCP and UDP ports by number, service or risk, and open the reference entry.
Open tool →