Free Online Tools
A collection of 12 fast, free utilities for developers, writers, and anyone who works with text and data. Everything runs entirely in your browser — no accounts, no uploads, no tracking of your input.
JSON Formatter
Format, validate, and minify JSON with clear error messages.
Base64 Encoder
Encode and decode Base64 with full UTF-8 support.
URL Encoder
Percent-encode and decode URLs and query strings.
UUID Generator
Generate single or bulk random UUID v4 values.
Password Generator
Create strong random passwords with custom length and character sets.
Word Counter
Count words, characters, and sentences; estimate reading time.
Timestamp Converter
Convert Unix timestamps to dates and back, with live clock.
Color Converter
Convert between HEX, RGB, and HSL with a live color preview.
Case Converter
Convert text between upper, lower, title, camel, and snake case.
Lorem Ipsum Generator
Generate placeholder paragraphs and sentences for mockups.
SHA-256 Hash Generator
Compute SHA-256 hashes of any text instantly.
Markdown Preview
Write Markdown and preview the rendered HTML live.
QR Code Generator
Turn text or URLs into scannable QR codes; download as PNG.
Image Compressor
Shrink JPG, PNG, and WebP images in your browser before uploading.
Unit Converter
Convert length, weight, temperature, and area units instantly.
Regex Tester
Test regular expressions with live match highlighting.
Text Diff
Compare two texts line by line with highlighted differences.
JWT Decoder
Decode JSON Web Tokens; inspect header, payload, and expiry.
Base Converter
Convert numbers between binary, octal, decimal, and hex.
HTML Encoder
Escape and unescape HTML entities safely.
BMI Calculator
Compute body mass index and see the healthy range.
Loan Calculator
Estimate monthly mortgage payments and total interest.
Frequently asked questions
- Are these tools really free?
- Yes. Every tool on this site is free to use with no limits, no accounts, and no sign-up.
- Do you store or upload my data?
- No. All processing happens locally in your browser using JavaScript. Nothing you type or paste is sent to any server.
- Do the tools work offline?
- Yes. The site has no external dependencies — once a page is loaded, the tools keep working without an internet connection.
- Which browsers are supported?
- Any modern browser: Chrome, Edge, Firefox, and Safari, on desktop and mobile. The layout is responsive and respects your system's dark mode.
- Can I use these tools on my phone?
- Yes. Every page is mobile-friendly, with large tap targets and layouts that adapt to small screens.