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Browse all toolsRecommended tools
Browse all 803 tools →JSON Formatter
format, minify, and sort JSON
URL Inspector
parse, build, and encode HTTP(S) URLs
Base64 Encoder & Decoder
encode and decode UTF-8 text
UUID Generator
generate secure UUID batches locally
JWT Claims Inspector
inspect test claims and verify signatures locally
JavaScript Regex Tester
test expressions and inspect matches
Look up country data
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Phone numbers
ISO country and territory phone formats
Languages & locales
language and locale recommendations
ID formats
reviewed format references with permanently masked examples
Currencies
ISO 4217 codes and minor units
Time zones
IANA zone names by country
Address formats
reviewed postal field order
Subdivision codes
ISO 3166-2 code reference
Practical guides
Turn JSON into TypeScript without trusting the sample
Use a JSON sample to start a TypeScript contract while keeping runtime checks separate.
Inspect JWT claims without treating them as proof
Read JWT metadata locally for debugging while keeping signature verification and authorization separate.
URL encoding: encode data, not the whole address
Inspect URL components locally and avoid double-encoding query values or paths.