JSON Formatter

Format, validate and minify JSON.

How the JSON formatter works

The text is parsed with a strict JSON parser. If it is valid it is re-serialised with your chosen indentation (pretty print) or with no whitespace (minify).

When the JSON is invalid, DevCipher shows the line and column of the first problem — common causes are trailing commas, single quotes and unquoted keys.

Processed locally in your browser — your input is never uploaded.

What is JSON Formatter?

Format, validate and minify JSON. The text is parsed with a strict JSON parser. If it is valid it is re-serialised with your chosen indentation (pretty print) or with no whitespace (minify).

Is JSON Formatter free to use?

Yes. JSON Formatter on DevCipher is completely free, with no sign-up, no limits and no ads.

Is my data safe when I use JSON Formatter?

Yes. Everything runs locally in your browser. Your input is never uploaded to a server, and sensitive values such as keys and tokens are never saved.

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Base64URL Encoder — URL-safe Base64 without padding
Base64URL Decoder — Decode URL-safe Base64
URL Encoder — Percent-encode text for URLs
URL Decoder — Decode percent-encoded text
Hex Encoder — Convert text to hexadecimal bytes
Hex Decoder — Convert hexadecimal bytes to text
Binary Encoder — Convert text to 8-bit binary
Binary Decoder — Convert 8-bit binary to text
Unicode Encoder — Escape characters as \uXXXX
Unicode Decoder — Turn \uXXXX escapes into text
HTML Entity Encoder — Escape &, <, >, quotes for HTML
HTML Entity Decoder — Turn entities back into characters
Image to Base64 — Convert an image to a Base64 data URI
Base64 to Image — Decode Base64 to an image and download it
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RSA & PEM Tools — Generate keys, encrypt, decrypt, sign, verify
Hash Generator — MD5, SHA-1/2/3, SHAKE and BLAKE2
HMAC Generator — Keyed hashes: HMAC-SHA256 and more
String ⇄ JSON — Convert escaped strings to JSON and back
JSON Formatter — Format, validate and minify JSON
JSON Comparator — Find differences between two JSON documents
JSON Tree Viewer — Explore JSON as an expandable tree
JSON to Code — Generate types for TypeScript, Java, Go, Python, C#
JWT Decoder — Decode and inspect JSON Web Tokens
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URL Parser — Break a URL into its components
Query String Parser — Parse and build query strings
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Password Generator — Strong random passwords
Random String Generator — Secure random strings and tokens
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Number Base Converter — Binary, octal, decimal, hex and more
Color Converter — HEX, RGB and HSL with contrast check
Regex Tester — Test JavaScript regular expressions
CSV ⇄ JSON — Convert between CSV and JSON
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XML Formatter — Pretty print, minify and validate XML
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