JSON Formatter
Format messy JSON into readable, indented output and catch syntax errors quickly.
Browser-based utilities
Fast tools for text, code and data cleanup
Format JSON, decode Base64, generate hashes, count words, test regex, parse URLs and clean everyday text without opening a heavy app.
37 tools
running in the browser for fast daily work.
01
Paste
Bring in copied JSON, text, URLs, tokens or snippets.
02
Run
Use focused controls with sample input and clear output.
03
Copy
Move the result back into your editor, docs or workflow.
All tools
37 tools available
JSON Validator
Check JSON syntax and find parsing errors before you save, send or deploy data.
JSON Minifier
Remove whitespace from JSON after validating that the input can be parsed safely.
Base64 Encoder / Decoder
Encode plain text to Base64 or decode Base64 back to readable text.
URL Encoder / Decoder
Encode text for URLs or decode percent-encoded query strings and parameters.
HTML Entity Encoder / Decoder
Convert HTML-sensitive characters to entities or decode entities back to normal text.
JWT Decoder
Decode JWT header and payload sections so you can inspect claims without verifying the signature.
Hash Generator
Generate SHA-1, SHA-256 and SHA-512 hashes from text using the browser crypto API.
Password Generator
Create strong random passwords with length and character set controls.
UUID Generator
Generate random UUID values for test data, records and development placeholders.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and convert dates back to Unix time.
Word & Character Counter
Count words, characters, sentences, paragraphs and estimated reading time.
Case Converter
Convert text to uppercase, lowercase, title case, sentence case and alternating case.
Slug Generator
Turn titles into clean URL slugs for blog posts, docs and product pages.
Lorem Ipsum Generator
Generate placeholder paragraphs for layouts, drafts and UI mockups.
Regex Tester
Test JavaScript regular expressions against sample text and inspect matches.
Text Diff Checker
Compare two text blocks line by line and see additions, removals and changes.
Markdown Preview
Preview basic Markdown headings, lists, links and code blocks as HTML.
Color Converter
Convert colors between HEX, RGB and HSL formats with a live swatch.
CSS Minifier
Remove comments and extra whitespace from CSS for compact snippets.
JavaScript Minifier
Compact simple JavaScript snippets by removing comments and extra whitespace.
HTML Formatter
Indent simple HTML so nested elements are easier to scan and edit.
Line Sorter
Sort lines alphabetically, reverse order and optionally remove empty lines.
Duplicate Line Remover
Remove repeated lines while keeping the first occurrence in place.
JSON to CSV Converter
Convert an array of JSON objects into a readable CSV table.
CSV to JSON Converter
Convert CSV rows into a JSON array using the first row as field names.
Query String Parser
Parse URL query strings into decoded key and value pairs.
URL Parser
Break a URL into protocol, host, path, query and hash sections.
Regex Escape Tool
Escape special characters so literal text can be used safely inside a regular expression.
Text Cleaner
Trim text, normalize spacing and remove repeated blank lines from pasted content.
Text Reverser
Reverse characters, words or line order for quick text experiments.
Random String Generator
Generate random strings for test data, identifiers and temporary tokens.
Random Number Generator
Generate random numbers within a range for tests, samples and quick decisions.
Number Base Converter
Convert numbers between decimal, binary, octal and hexadecimal.
File Size Converter
Convert bytes, KB, MB and GB into related file size units.
HTML to Markdown Converter
Convert simple HTML snippets into readable Markdown.
Meta Tag Generator
Generate basic SEO and Open Graph meta tags for a web page.
Practical guides
Context for the tools that get searched most
How to Format JSON Without Breaking the Data
A practical guide to reading, formatting and checking JSON from APIs, logs and configuration files.
JSON to CSV: When It Works Well and When It Gets Messy
Understand the best JSON shape for CSV conversion and how nested values are handled.
Base64 Encoding Explained for Everyday Debugging
Learn what Base64 is, what it is not, and where it commonly appears in web development.
How to Decode a JWT and Read Its Claims
Decode JWT header and payload sections, understand common claims and avoid a common security mistake.
Built for direct work
Each tool has its own URL, direct controls, clear output, related tools and a short guide when extra context helps.
Local-first where it fits
Formatting, converting and counting tasks run in the browser. That keeps common workflows responsive and avoids unnecessary uploads for routine text operations.