Encoding & Decoding
Transform data, any format.
Base64, URL encoding, JWT debugging, and image conversion — all in your browser.
B64
Base64
Unicode-safe Base64 encode and decode. URL-safe mode. Nothing uploaded.
→URLURL Encoder
Percent-encode with encodeURI or encodeURIComponent. Nothing uploaded.
→JWTJWT Debugger
Decode header, payload, and claims in the browser. Token never uploaded.
→IMGImage to Base64
Convert images to base64 strings.
→B64Base64 to Image
Convert base64 strings back to images.
→What is encoding?
Encoding converts data from one representation to another so it can be safely transmitted, stored, or embedded in contexts that only accept certain character sets. None of your data leaves the browser — every conversion runs locally.
- Base64 — encode binary or text into a safe ASCII string for APIs, emails, and data URIs.
- URL encoding — percent-encode special characters so query strings and paths are valid in any browser.
- JWT debugging — decode JSON Web Token headers and payloads to inspect claims without a backend.
- Image encoding — convert images to inline Base64 data URIs for embedding directly in HTML or CSS.