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Developer tools for the small jobs in between.
Inspect a JSON payload, escape a string, or generate a value for your next task. Processing happens in the browser. Formatting tools are convenient helpers; test important output in your own environment.
Start with the task at hand
JSON Formatter
Format and clean JSON in your browser with readable indentation and instant output. Your data stays on your device.
JSON Validator
Check JSON syntax and inspect parser feedback before using a payload. Runs locally in your browser.
Base64 Encoder
Encode text as Base64 for data exchange and copy the encoded result. Runs locally in your browser.
URL Encoder
Percent-encode text for a URL component, including spaces and reserved characters. Runs locally in your browser.
UUID Generator
Generate one or many UUID v4 identifiers locally with options for uppercase characters and hyphens.
Password Generator
Create strong random passwords locally with custom length, uppercase, lowercase, number, and symbol options.
Choose your next step
- 01
Inspect structured data
Format or validate JSON to find syntax problems and make nested data easier to read.
- 02
Convert text safely
Choose Base64, URL encoding, or HTML entities for the context that requires it; encoding does not provide encryption.
- 03
Generate and verify
Create identifiers or hashes, then check the output format and security requirements of the consuming system.
All developer tools
Search this categoryBase64 Decoder
Decode a Base64 string into readable text and check the result locally. Runs locally in your browser.
Base64 Encoder
Encode text as Base64 for data exchange and copy the encoded result. Runs locally in your browser.
Border Radius Generator
Preview rounded corners and generate a CSS border-radius value. Runs locally in your browser.
Box Shadow Generator
Adjust a CSS box shadow with offsets, blur, spread, and an inset option. Runs locally in your browser.
Coin Flip Tool
Simulate one or more coin flips and review the outcomes. Runs locally in your browser.
Color Converter
Convert a supported color value between HEX, RGB, and HSL. Runs locally in your browser.
CSS Formatter
Format CSS declarations and rules into a more readable layout. Runs locally in your browser.
CSS Gradient Generator
Build a CSS gradient and inspect its live color preview. Runs locally in your browser.
CSS Minifier
Compact CSS whitespace and comments for a smaller text result. Runs locally in your browser.
Dice Roller
Roll virtual dice with the available side counts and inspect the results. Runs locally in your browser.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from text locally in your browser without transmitting the input.
HTML Entity Decoder
Convert HTML entities into their readable characters in your browser. Runs locally in your browser.
HTML Entity Encoder
Escape HTML special characters before displaying text inside HTML content. Runs locally in your browser.
HTML Formatter
Make HTML source easier to inspect with local indentation and formatting. Runs locally in your browser.
HTML Minifier
Reduce whitespace in HTML source and review the compact result. Runs locally in your browser.
JavaScript Formatter
Reformat JavaScript for inspection with readable spacing and indentation. Runs locally in your browser.
JavaScript Minifier
Compact JavaScript text for inspection and copy the result locally. Runs locally in your browser.
JSON Formatter
Format and clean JSON in your browser with readable indentation and instant output. Your data stays on your device.
JSON Validator
Check JSON syntax and inspect parser feedback before using a payload. Runs locally in your browser.
Markdown Previewer
Preview supported Markdown formatting beside your source text. Runs locally in your browser.
MD5 Generator
Generate an MD5 checksum from text for compatibility or non-security checks. Runs locally in your browser.
Password Generator
Create strong random passwords locally with custom length, uppercase, lowercase, number, and symbol options.
Password Strength Checker
Inspect a password’s length and character variety without sending it to a server. Runs locally in your browser.
Random Number Generator
Generate integers inside a chosen range, optionally without duplicates. Runs locally in your browser.
Random Password Generator
SHA256 Generator
Generate a SHA-256 hash from text in your browser. Runs locally in your browser.
URL Decoder
Decode percent-encoded URL text and review spaces and reserved characters. Runs locally in your browser.
URL Encoder
Percent-encode text for a URL component, including spaces and reserved characters. Runs locally in your browser.
URL Slug Generator
Turn a heading into a compact hyphen-separated URL slug. Runs locally in your browser.
UUID Generator
Generate one or many UUID v4 identifiers locally with options for uppercase characters and hyphens.