JSON Formatter / Validator / Minifier
Format, validate, and minify JSON content locally.
Use this Base64 tool when you need to convert plain text to Base64, inspect encoded values, or quickly reverse Base64 back into readable text.
Use this Base64 tool when you need to convert plain text to Base64, inspect encoded values, or quickly reverse Base64 back into readable text.
Convert plain text to Base64 and decode Base64 back to text.
Base64 Encode / Decode runs locally in your browser by default, so Koiloop does not need to upload that input to a server.
Base64 Encode / Decode is best for routine work, and Koiloop keeps the experience browser-based whenever possible.
Signals that help people understand how this page behaves before they paste real data.
Format, validate, and minify JSON content locally.
Encode URL-safe strings and decode percent-encoded values.
Encode and decode HTML entities without leaving the browser.
Generate UUID v4 and ULID identifiers.