Dev, Security & Speed Test
Typing speed test (WPM), IP lookup, password crack time, EAN-13 barcode, JSON formatter, and hashing.
JSON Formatter & Validator
Format, beautify, validate, and minify JSON strings with error highlighting and tree view.
Strong Password Generator
Generate strong, cryptographically secure random passwords with customizable length and characters.
UUID / GUID v4 Generator
Generate cryptographically random UUID/GUID version 4 strings in bulk or single format.
Hash Generator (MD5, SHA-256, SHA-512)
Compute cryptographic checksum hashes for text strings using SHA-256, SHA-512, SHA-1, and MD5.
CSS Minifier & Beautifier
Minify CSS code by stripping whitespace and comments, or beautify minified styles.
HTML Minifier & Cleaner
Compress and minify HTML source code, removing comments and whitespace to boost page speed.
JavaScript Minifier & Beautifier
Minify JavaScript code to reduce file size and optimize execution loading times.
Number Base Converter (Binary, Hex, Dec, Oct)
Convert numbers between Decimal (Base 10), Binary (Base 2), Hexadecimal (Base 16), and Octal (Base 8).
All-in-One Percentage Calculator
Solve all percentage problems: find X% of Y, percentage increase/decrease, and what % is X of Y.
Ratio & Proportion Calculator
Solve proportions (A : B = C : D), simplify ratios, and scale image/screen aspect ratios.
Regular Expression (Regex) Tester
Test and debug Regular Expressions in real-time with visual match highlighting and flags.
CSS Gradient Generator
Design beautiful linear and radial CSS gradients with live preview and ready-to-paste CSS code.
Color Code Converter (HEX, RGB, HSL)
Convert colors instantly between HEX, RGB, HSL, and CMYK formats with a visual color picker.
ASCII to Text & Text to ASCII
Convert characters to ASCII decimal and hexadecimal codes and decode ASCII back to text.
Random Picker Wheel & Name Selector
Pick a random winner from a list of names or draw random numbers with zero bias.
Online Typing Speed Test (WPM & CPM)
Test your typing speed in words per minute (WPM), accuracy, and keypresses per minute in Arabic and English.
What Is My IP & Network Geo-Location Lookup
Detect your public IP address, ISP, city, country, region, and network connection parameters.
Password Crack Time & Entropy Strength Checker
Measure password entropy bits and estimate how long brute-force attacks would take to crack it.
EAN-13 & Code 128 Commercial Barcode Generator
Generate retail product barcodes (EAN-13) with automatic checksum calculation and high-res SVG export.
JWT Decoder
Read a JWT's header, payload and issue/expiry times locally — the token never leaves your browser.
HTML Entities Encoder / Decoder
Convert special characters to HTML entities (& <) and back to safely embed text in web pages.
What Is My Screen Resolution? Browser Info
See your screen resolution, viewport size, pixel ratio, language, time zone and device info.
About Dev, Security & Speed Test
The Dev, Security & Speed Test section has 22 free tools that run in your browser without uploading your data, including JSON Formatter & Validator, Strong Password Generator, UUID / GUID v4 Generator, Hash Generator (MD5, SHA-256, SHA-512), CSS Minifier & Beautifier and HTML Minifier & Cleaner. Typing speed test (WPM), IP lookup, password crack time, EAN-13 barcode, JSON formatter, and hashing.