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Create test credit card numbers that pass the Luhn check, for testing payment forms and checkout flows. These are well-known test numbers โ never use them for real purchases.
Format, beautify and validate JSON in one click.
๐ปEncode and decode Base64 safely, including unicode text.
๐ปEncode and decode URLs and query strings instantly.
๐ปEncode HTML entities and decode them back, instantly.