Developer Tools
Explore browser-based developer utilities for JSON formatting, JWT decoding, regular expressions, hashing, encoding, and data inspection.
JSON Formatter & Beautifier
Format, indent, and prettify messy JSON data with syntax validation and line numbers.
JSON Validator
Validate JSON syntax and locate syntax errors with line and column accuracy.
JSON Minifier
Compress JSON by stripping all whitespace, line breaks, and unnecessary spaces.
JSON Beautifier & Prettifier
Format and beautify unformatted or minified JSON with customizable 2-space or 4-space indentation.
JSON to CSV Converter
Convert JSON arrays and objects into structured CSV tabular spreadsheets.
CSV to JSON Converter
Convert CSV spreadsheets and tabular data into clean JSON arrays of objects.
Base64 Encoder
Encode plain text strings or binary files into standard RFC 4648 Base64 strings.
Base64 Decoder
Decode Base64 encoded strings back to readable plain text and UTF-8 characters.
URL Encoder
Encode text and query parameters into percent-encoded URL-safe format.
URL Decoder
Decode percent-encoded URL strings back into readable text and query parameters.
UUID / GUID Generator
Generate cryptographically random UUID v4 identifiers in bulk with custom formatting.
Hash Generator (SHA-256, SHA-512, MD5)
Generate cryptographic hash digests using SHA-256, SHA-512, SHA-384, SHA-1, and MD5.
Unix Timestamp Converter
Convert Unix epoch timestamps (seconds & milliseconds) to human dates and vice-versa.
Regex Tester & Debugger
Test and debug JavaScript Regular Expressions in real time with visual match highlighting.
JWT Decoder (JSON Web Token)
Decode JSON Web Tokens (JWT) to inspect header, payload claims, and expiration date.
Slug Generator (URL String Maker)
Convert article titles and headlines into clean, SEO-optimized URL slugs.
Lorem Ipsum Generator
Generate customized placeholder Lorem Ipsum text by paragraphs, sentences, or words.
HTML Entity Encoder / Decoder
Convert special characters to HTML entities and decode HTML entities back to raw text.
Text Repeater
Repeat any word, string, or sentence multiple times with custom line breaks or separators.
CSS Minifier
Compress and minify stylesheet CSS code by stripping whitespace and comments.
IPv4 Subnet Calculator
Calculate IPv4 network and broadcast addresses, host ranges, masks, and usable host counts instantly.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal with validation and copy-ready output.
PX to REM Converter
Convert CSS pixels to rem units and back using a configurable root font size.
URL Parser
Break a URL into protocol, host, port, path, query parameters, hash, and other components.
Markdown to HTML Converter
Convert Markdown into clean HTML directly in your browser without uploading your content.
HTML Minifier
Reduce HTML size by removing unnecessary whitespace and optional markup safely.
JavaScript Beautifier
Format compressed or hard-to-read JavaScript into clean, readable code locally.
JSON ↔ YAML Converter
Convert JSON to YAML and YAML to JSON with browser-side validation and copy-ready output.