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Percent-encode text for use in URLs and query strings.

Decode percent-encoded URLs and query strings back to readable text.

Escape text so it renders literally inside HTML.

Turn HTML entities back into plain text characters.

Generate random RFC 4122 version 4 UUIDs.

Convert CSV (or TSV) into a JSON array, with or without a header row.

Convert a JSON array of objects into CSV rows.

Turn plain text lines into a JSON array of strings.

Shuffle list items into a random order.

Randomly reorder the lines of a text.

Randomly reorder the words in a text.

Pick one random item from a list.

Draw a random winner from a list of entries.

Choose random items from a provided list.

Keep only the items that match a rule.

List the items that contain a query.

Remove every item that matches a rule.

Find and replace text inside every list item.

Take a window of items from a list.

Keep only the first N items.

Group items into fixed-size chunks.

Arrange items into a fixed number of columns.

Join items with a separator, optionally wrapped.

Re-join items using a different separator.