Category

Developer Tools

Formatters, encoders, HTTP references, debuggers, and code utilities. All utilities execute 100% client-side in your browser.

All Tools Developer Text Web & SEO Calculators Generators Media & Images QR & Codes Business & Documents

JSON Formatter, URL Encoder/Decoder, Hash MD5/SHA256, and Regex suite.

HTTP Status Code Lookup

Fast reference library for 1xx, 2xx, 3xx, 4xx, and 5xx HTTP response status codes with explanations and use cases.

JSON ↔ CSV Converter

Bidirectional converter between JSON arrays and CSV tables. Supports RFC 4180 compliance, file uploads, and downloads.

Base64 Encoder / Decoder

Encode and decode text and files into Base64 format. Full UTF-8 multi-byte support, URL-safe mode, and file uploads.

Decode JSON Web Tokens, inspect header and payload claims, check expiration timestamps, and analyze signatures.

Regex Tester & Debugger

Test regular expressions in real-time with syntax highlighting, flag controls, capture group breakdowns, and cheat sheet.

JSON Diff Checker

Compare two JSON documents side-by-side or line-by-line with structural diffing, key additions, deletions, and value changes.

Hash Generator Suite

Compute SHA-256, SHA-512, SHA-1, and MD5 cryptographic hashes simultaneously using the browser Web Crypto API.

HTML Entity Encoder / Decoder

Convert special characters to named and numeric HTML entities and decode encoded markup back to raw text.

MIME Type Reference & Lookup

Search 200+ standard MIME types and file extensions with category filtering and Content-Type header reference.

Markdown Table Generator

Interactive visual spreadsheet grid to build, format, align, import from CSV, and export GFM Markdown tables.

SQL Formatter & Beautifier

Clean, indent, uppercase keywords, and beautify messy SQL queries in your browser with multiple indent options.

CSS Formatter & Minifier

Format, indent, beautify, or minify CSS stylesheets with rule deduplication and instant byte reduction statistics.

HTML Formatter & Minifier

Format and indent raw HTML code or compress and minify markup with whitespace stripping and byte savings display.