Free Online Tools
Free image, calculator, and network tools, right in your browser. No signup, no watermarks.
Image Tools
Image Resizer
Resize any JPG, PNG, WebP, or GIF image online, free, right in your browser — no upload to a server, no signup.
Image Compressor
Compress JPG, PNG, and other images online, free, right in your browser — reduce file size with an adjustable quality slider, no upload to a server.
Image Format Converter
Convert images between PNG, JPG, WebP, GIF, and BMP online, free, right in your browser — no upload to a server, no signup.
Calculators
Percentage Calculator
Calculate percentages instantly: find X% of a number, what percent one number is of another, or the percentage change between two values.
BMI Calculator
Calculate your Body Mass Index (BMI) instantly using metric (cm/kg) or imperial (ft/lb) units, with a category breakdown.
Age Calculator
Calculate your exact age in years, months, and days from your date of birth to today.
Text Tools
Word Counter
Count words, characters, sentences, and paragraphs in your text instantly, plus estimated reading time — free, right in your browser.
JSON Formatter & Validator
Format, validate, and minify JSON online, free, right in your browser — pretty-print with indentation or minify to a single line.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and kebab-case instantly, free, right in your browser.
Network Tools
What Is My IP Address
Instantly find your public IP address, browser, and operating system — no signup required.
Subnet Calculator
Calculate network address, broadcast address, subnet mask, and usable host range from an IP address and CIDR prefix — free, right in your browser.
HTTP Headers Checker
See the exact HTTP request headers your browser sends — user agent, accept-language, and more — no signup required.