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Free Online Tools — Browser-Based, No Sign-Up

Handy utilities, open in browser, zero install

JSON Formatter

Beautify, minify, validate JSON

Base64 Encoder / Decoder

Encode/decode text, URLs, images

Time Zone Converter

Convert time between any two time zones instantly

IP Address Lookup

Look up your IP address and geolocation information

Word Counter

Words, characters, sentences, read time

Currency Converter

Convert between 30+ major currencies with live-like rates

Scientific Calculator

Full scientific calculator with trig, log, factorial and powers

Color Palette Generator

Generate harmonious color palettes from any base color

Percentage Calculator

X% of Y, discount, change rate

BMI Calculator

Height/weight → BMI & category

QR Code Generator

Text, URL, vCard → QR image

URL Encoder/Decoder

Encode/decode URL strings

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