Free Encoder & Decoder Tools

Format and validate JSON, convert between binary and hex, encode and decode Base64/HTML/URLs, and beautify or minify code — free, with no signup required.

Code Formatting Tools

Beautify messy code with HTML Beautifier, CSS Beautifier, or JavaScript Beautifier, or edit HTML directly with HTML Editor Online.

HTML BeautifierCSS BeautifierJavaScript BeautifierHTML Editor Online

Code Minification Tools

Shrink file size by removing unnecessary whitespace and comments with HTML Minifier, HTML Compressor, CSS Minifier, or JS Minifier.

HTML MinifierHTML CompressorCSS MinifierJS Minifier

JavaScript Tools

Make obfuscated JavaScript readable with Javascript DeObfuscator, or protect your own code with Javascript Obfuscator.

Javascript DeObfuscatorJavascript Obfuscator

JSON Tools

Format, validate, and edit JSON with JSON Formatter, JSON Validator, JSON Viewer, and JSON Editor. Convert JSON to and from other formats, or generate a schema from a sample.

JSON FormatterJSON ValidatorJSON ViewerJSON EditorJSON MinifyJSON to JSON SchemaXML to JSONTSV to JSONJSON to XMLJSON to CSVJSON to TextJSON to TSV

Encoding & Decoding Tools

Generate an MD5 hash with MD5 Generator, encode or decode Base64 with Base64 Encode and Base64 Decode, handle URL encoding with URL Encoder / Decoder, and convert HTML entities with HTML Encoder and HTML Decoder.

MD5 GeneratorBase64 EncodeBase64 DecodeURL Encoder / DecoderHTML EncoderHTML Decoder

Binary, Hex, Octal & Decimal Converters

Convert values between text, binary, hexadecimal, octal, decimal, and ASCII — useful for low-level programming, debugging, and learning how computers represent data.

Text to BinaryBinary to TextHEX to BinaryBinary to HEXASCII to BinaryBinary to ASCIIDecimal to BinaryBinary to DecimalText to ASCIIASCII to TextHEX to DecimalDecimal to HEXOctal to BinaryBinary to OctalOctal to DecimalDecimal to OctalHEX to OctalOctal to HEXText to OctalOctal to TextText to HEXHEX to TextText to DecimalDecimal to Text

How to Use These Tools Together

1. Validate before you format. Run JSON through JSON Validator before formatting or converting it, so you're not debugging a formatting tool and a syntax error at the same time.
2. Beautify during development, minify for production. Keep readable code while working, then minify before deploying to reduce file size.
3. Use binary/hex converters for learning and debugging. They're most useful for understanding low-level data representation, not everyday development tasks.

Frequently Asked Questions

Are these encoder and decoder tools free?

Yes, all tools on this page are free with no signup required.

What's the difference between JSON Formatter and JSON Validator?

JSON Formatter reformats JSON for readability, while JSON Validator specifically checks whether the JSON syntax is valid, without necessarily reformatting it.

Is MD5 secure for hashing passwords?

No. MD5 is fast to compute, making it vulnerable to brute-force attacks; it's fine for checksums and basic testing but not for securely storing passwords.

When should I minify code versus beautify it?

Beautify code while actively developing and reading it; minify it only for the final production build to reduce file size.

What is Base64 encoding used for?

It represents binary data as plain text, commonly used for embedding small files like images directly in HTML, CSS, or JSON.

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