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JSON FormatterFormat, validate, and minify JSON privately in your browser.
JSON DiffStructural diff of two JSON objects — not a noisy text diff.
Timestamp ConverterUnix epoch ↔ human dates, live clock, any timezone basics.
Cron HelperExplain cron in English and preview the next five runs.
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JWT DecoderDecode JWT claims, spot alg:none, optional local HS256 verify.
Hash GeneratorSHA-1/256/384/512 and MD5 of text or local files.
UUID GeneratorGenerate UUID v4 and v7 values in bulk.
Base64 Encode / DecodeUTF-8 safe Base64 encode/decode for text and local files.
Word CounterCount words, characters, and reading time privately.
Password GeneratorGenerate strong random passwords locally.
Regex TesterTest JavaScript regex with recipes; copy as JS or Python.

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Remove duplicate lines

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Paste a list; keep first occurrence of each line. Optionally ignore case.

Tool processing runs in your browser — your pastes/files are not uploaded to our servers for processing.Details

Case-insensitive Sort lines after

JSON format, cron & timestamps.private in your browser.

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