JSON formatter
Validate, format and minify JSON. Check the limits before changing important data.
Open tool βA practical workbench for everyday data
Small tools.
Clear answers.
Format JSON, count text and inspect URLs. Understand the result with examples you can run yourself.
Input stays in your browserOne emoji. Three valid counts.
Input π¨βπ©βπ§βπ¦ Graphemes 1 Code points 7 UTF-8 bytes 25
The number depends on what you count.
See the experiment β
See the experiment β
Get something done.
Free to use. No account required.
Text counter
Count graphemes, code points, UTF-16 units, UTF-8 bytes and non-empty lines.
Open tool βURL inspector
Read URL components and repeated query parameters without opening the destination.
Open tool βKnow what the result means.
How we test βWhy JSON formatting can change large numbers β
A reproducible example of a 17-digit ID changing during parsing, and when to use a string.
What happens to duplicate keys when you format JSON? β
See a repeated key disappear, integer-like keys move, and whitespace change.
Why one emoji can count as several characters β
Compare UTF-16 units, Unicode code points and grapheme clusters using the same seven strings.
UTF-8 bytes vs characters: measure the limit you actually have β
Why the same-looking text can take different amounts of space, with exact byte counts.
How to read duplicate URL query parameters without losing values β
Repeated names, empty values and key-only flags in a concrete parsing example.
Why a plus sign becomes a space in URL query parameters β
Compare a+b, a%2Bb and percent-encoded paths using the browser URL parser.