Lightweight developer utilities for structured data, text encodings, URL percent-encoding and local JWT inspection.
Each page is built around one clear task.
Format, validate and minify JSON in your browser.
Open toolEncode and decode UTF-8 text with Base64 or Base64URL.
Open toolEncode or decode URL components and complete URLs.
Open toolDecode JWT header and payload locally without verifying signatures.
Open toolConvert JSON objects or arrays into spreadsheet-ready CSV.
Open toolValidate and pretty-print XML with configurable indentation.
Open toolUse JSON Formatter to pretty-print and validate strict JSON, Base64 Encode / Decode for text encodings, URL Encoder / Decoder for percent-encoding, and JWT Decoder to inspect compact token header and payload JSON.
Each tool stays intentionally narrow. In particular, Base64 and URL encoding are not encryption, and JWT decoding is not signature verification.
The current developer utilities execute their core transformations in the browser. JSON uses native parsing, Base64 uses browser byte/text APIs, URL encoding uses native URI functions and JWT decoding operates on the token locally.
Local execution reduces unnecessary server round trips, but developers should still avoid pasting production secrets into any tool unless the workflow and environment are appropriate.