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CSV to JSON Converter

Paste CSV and get a JSON array of objects, using the first row as keys.

JSON to CSV

Convert a JSON array of objects to CSV.

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Password Strength Checker

Check how strong a password is.

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JWT Decoder

Decode a JSON Web Token and view its header and payload.

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File Hash Calculator

Calculate the hash of a file.

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Subnet / CIDR Calculator

Calculate subnet mask, network range, and host count, for IPv4 and IPv6.

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HTTP Status Code Lookup

Look up the meaning of any HTTP status code.

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