Essential tools for developers — formatters, generators, encoders, and more.
Encode and decode Base64 strings instantly in your browser. Supports text and file encoding with no data sent to any server.
Design and preview CSS border-radius values visually. Adjust each corner independently and copy the generated CSS. Free and instant.
Design CSS box shadows visually with a live preview. Adjust offset, blur, spread, and color, then copy the generated CSS code.
Calculate Unix file permissions with a visual editor. Convert between numeric (755) and symbolic (rwxr-xr-x) formats instantly.
Minify HTML, CSS, and JavaScript code instantly. Remove whitespace, comments, and unnecessary characters to reduce file size.
Turn code snippets into beautiful images. Choose themes, add window chrome, and export as PNG. Free Carbon alternative — no signup required.
Pick colors and convert between HEX, RGB, HSL, and HSB formats. Copy color codes instantly for your design projects.
Build and validate cron expressions with an interactive visual editor. See the next scheduled run times for any cron pattern.
Create beautiful CSS gradients visually. Generate linear, radial, and conic gradient code with a live preview and one-click copy.
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text or files. Verify file integrity with instant client-side hashing.
Encode special characters to HTML entities or decode entities back to text. Handles named and numeric entities. Free and private.
Find your public IP address and look up geolocation, ISP, and network details for any IP address instantly.
Format, validate, and minify JSON data instantly in your browser. Free online JSON beautifier with syntax highlighting.
Decode and inspect JSON Web Tokens instantly. View headers, payloads, and claims without any server-side processing.
Write and preview Markdown in real time. Supports GitHub Flavored Markdown with tables, task lists, syntax highlighting, and export.
Convert numbers between binary, octal, decimal, and hexadecimal. Essential tool for developers and computer science students.
Test and debug regular expressions in real time. Validate regex patterns with match highlighting, capture groups, and capture group display.
Format and beautify messy SQL queries instantly. Supports standard SQL syntax. Free, private, browser-based.
Convert Unix timestamps to human-readable dates and vice versa. Support for seconds, milliseconds, and multiple time zones.
Encode and decode URLs and query strings instantly. Convert special characters to percent-encoded format for safe use in web addresses.
Generate random UUIDs (v4) and other versions instantly. Copy unique identifiers for databases, APIs, and testing workflows.