ToolNest

ToolNest

Free online tools that run right in your browser

  • Instant, no sign-up
  • Private — runs in your browser
  • 100% free

Popular tools

Word Counter Count words, characters, sentences and paragraphs, and see reading time and top keywords. JSON Formatter & Validator Beautify, minify and validate JSON with clear error locations and optional key sorting. Unit Converter Convert length, weight, temperature, area, volume, speed, time and data units. Password Generator Create strong, random passwords with your choice of length and characters. QR Code Generator Make QR codes for links and text with custom colors and size. Download as PNG or SVG. Image Compressor & Resizer Shrink JPG, PNG and WebP images and resize them — all in your browser, nothing uploaded. Percentage Calculator Work out percentages, percentage change and increases or decreases instantly.

Text Tools

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Word Counter Count words, characters, sentences and paragraphs, and see reading time and top keywords. Case Converter Convert text to UPPER, lower, Title, Sentence, camelCase, snake_case, kebab-case and more. Lorem Ipsum Generator Generate placeholder text by paragraphs, sentences or words, with optional HTML tags. Remove Duplicate Lines Remove repeated lines from a list, with options to trim, ignore case, drop empty lines and sort. Slug Generator Turn titles into clean, SEO-friendly URL slugs. Handles accents and multiple lines.

Developer Tools

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JSON Formatter & Validator Beautify, minify and validate JSON with clear error locations and optional key sorting. Base64 Encoder / Decoder Encode text to Base64 or decode Base64 back to text. UTF-8 and URL-safe supported. URL Encoder / Decoder Percent-encode or decode URLs and query strings, and inspect every part of a URL. UUID Generator Generate random UUID v4 or time-ordered UUID v7 identifiers in bulk. Hash Generator Create MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text or files, and verify checksums. JWT Decoder Decode a JSON Web Token to inspect its header, payload and expiry. Nothing is sent anywhere.

Converters

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Unit Converter Convert length, weight, temperature, area, volume, speed, time and data units. Unix Timestamp Converter Convert Unix timestamps to readable dates and back, in your local time zone or UTC. Color Converter Convert colors between HEX, RGB, HSL, HSV and CMYK, check contrast and get tints and shades.

Generators

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Password Generator Create strong, random passwords with your choice of length and characters. QR Code Generator Make QR codes for links and text with custom colors and size. Download as PNG or SVG.

Image Tools

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Image Compressor & Resizer Shrink JPG, PNG and WebP images and resize them — all in your browser, nothing uploaded. Image to Base64 Convert an image to a Base64 data URI, ready for HTML or CSS.

Calculators

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Percentage Calculator Work out percentages, percentage change and increases or decreases instantly. Age Calculator Find your exact age in years, months and days, plus your next birthday. BMI Calculator Calculate your Body Mass Index in metric or imperial units and see your healthy range.