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TSV ⇄ CSV Converter

Convert between tab-separated (TSV) and comma-separated (CSV) formats — handy when pasting from Excel or Google Sheets.

Hash Identifier

Paste a hash and see which algorithm it most likely comes from.

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Credit Card Number Validator

Check a card number with the Luhn algorithm, in your browser only.

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Checksum & CRC Calculator

CRC-32, Adler-32, MD5 and SHA checksums of any file or text, calculated in your browser.

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MAC Address Lookup

Find the manufacturer of a device from its MAC address using the IEEE OUI registry.

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JSON Diff Tool

Compare two JSON documents and see what was added, removed or changed.

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YAML Formatter & Validator

Validate YAML with line-accurate errors and reformat it with clean indentation.

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