Developer Utilities & Online Tools
Free, lightning-fast tools for encoding, formatting, converting, and inspecting code. Everything runs entirely in your browser without transmitting your sensitive data to any server.
Popular Tools
Most frequently used developer utilities
JSON Formatter & Validator
Free online JSON formatter and validator. Format, beautify, and validate JSON data instantly with real-time syntax highlighting and secure client-side processing.
JWT Decoder & Parser
Free online JSON Web Token (JWT) decoder. Securely decode and parse JWT header and payload instantly in your browser without sending data to a server.
Text to Base64 Encoder
Free online tool to encode plain text strings to Base64 format instantly. Supports file upload, URL fetching, and direct clipboard pasting.
Base64 to Text Decoder
Free online tool to decode Base64 strings back to plain text format instantly. Supports decoding from uploaded files or direct input.
Epoch Timestamp Converter
Fast and free online tool to convert Unix epoch timestamps to human-readable dates, and human-readable dates to Unix timestamps.
URL Encoder Tool
Free online URL encoder. Convert special characters into percent-encoded representations safely client-side to create standard URL strings.
URL Decoder Tool
Free online URL decoder. Decode percent-encoded URL strings back into standard text representation instantly in your browser.
XML Formatter & Beautifier
Free online XML formatter and validator. Beautify your XML code with a real-time tree structure viewer and instant error detection.
HTML Formatter & Beautifier
Free online HTML formatter. Beautify, format, and preview HTML code instantly with real-time rendering and syntax validation.
SQL Formatter & Minifier
Free online SQL formatter. Beautify and minify SQL queries client-side with syntax highlighting, custom dialects, and secure processing.
Online Image Cropper
Free online image cropper tool. Crop, resize, and edit images directly in your browser with pixel-perfect precision and complete privacy.
Image Converter (WebP, PNG, JPG)
Free online image format converter. Convert, compress, and optimize WebP, PNG, JPG, AVIF, BMP, ICO, and GIF images securely in your browser.
CSS Beautifier & Formatter
Free online CSS beautifier. Format, organize, and beautify your CSS stylesheet rules instantly with custom indentation sizes.
CSS Minifier & Compressor
Free online CSS minifier. Compress and optimize your CSS code instantly by removing whitespaces, comments, and line breaks to improve load times.
JSON to XML Converter
Free online JSON to XML converter. Transform JSON data to a structured XML format instantly with custom root elements and properties.
JSON to CSV Converter
Free online JSON to CSV converter. Convert JSON arrays of objects to CSV spreadsheets instantly, and securely download or copy client-side.
YAML Formatter & Validator
Free online YAML formatter. Validate and beautify YAML code client-side with advanced syntax highlighting, custom indentation, and linting.
JSON String Escape Tool
Free online JSON escape tool. Escape special characters in strings for safe JSON embedding, handling quotes, backslashes, newlines, and Unicode.
JSON String Unescape Tool
Free online JSON unescape tool. Decode JSON escape sequences like \n, \t, \" back to their original characters instantly in your browser.
Online Markdown Editor & Viewer
Free online Markdown editor and viewer. Write with real-time live HTML preview, supporting GitHub Flavored Markdown (GFM) and tables.
HTML String Escape Tool
Free online HTML escape tool. Instantly convert special HTML characters like <, >, &, and quotes to safe entity references securely client-side.
HTML String Unescape Tool
Free online HTML unescape tool. Decode HTML entities like &, <, > back to their original characters instantly in your browser.
Universal Unit Converter
Free online universal unit converter. Accurately convert measurements for length, weight, data storage, temperature, and more instantly.
Image to Base64 Converter
Free online Image to Base64 converter. Transform images to Base64 Data URI strings for HTML or CSS embedding with instant previews.
Base64 to Image Decoder
Free online Base64 to Image decoder. Paste a Base64 Data URI string to instantly preview, download, and convert it back to an image.
Browse by Category
Explore specialized tool suites by category
Developer Tools
2 toolsFree, browser-based online tools for developers. Format, validate, and convert data formats instantly with 100% privacy.
Formatter & Viewer
5 toolsFormat, beautify, and validate HTML, JSON, SQL, and XML formats instantly.
CSS Tools
22 toolsFormat, beautify, minify, and convert CSS, LESS, SASS, SCSS, and Stylus stylesheet rules online instantly.
Base64 Tools
8 toolsEncode and convert text, images, and files into Base64 format. Fast, secure, and runs entirely in your browser.
Image Tools
2 toolsQuick and easy client-side image editing and format conversion tools. Process your files securely without server uploads.
Escaper Tools
10 toolsEscape and unescape special characters in HTML, XML, JSON, CSV, and SQL. Free, instant, and 100% client-side.
Encoder Tools
4 toolsEncode and decode URLs, text, and data formats instantly. Fast, secure, and runs entirely in your browser.
Utilities
1 toolSimple, lightweight utility calculators and measurement converters for daily tasks. Fast and accurate calculations.
Converter Tools
11 toolsConvert data formats seamlessly. Instant, client-side, and secure conversions in your browser.
Editor Tools
1 toolFree, browser-based online editors for developers. Write, preview, and format code instantly.
Number Converters
22 toolsConvert numbers between binary, octal, decimal, hexadecimal, text, and numeric word formats instantly.
All Developer Utilities Directory
Complete index of all available tools on Fuhut