Encoders & DecodersBase64 Encode / Decode

Base64 Encode / Decode

Encode plain text or binary data to Base64 and decode Base64 strings back to readable text. Supports both standard and URL-safe Base64 alphabets. Useful for embedding data in JSON, HTML, CSS, or HTTP headers.

Plain Text

Base64 Encoded

Base64 Encode / Decode guide

Convert plain text, tokens, and small data snippets to and from Base64 without sending them to a remote service. The tool supports both standard Base64 and URL-safe Base64 for web, API, and configuration workflows.

Key features

Encode readable text into Base64 instantly
Decode Base64 strings back to UTF-8 text
Support standard and URL-safe Base64 alphabets
Copy results quickly for JSON, HTML, CSS, and HTTP headers

Common use cases

Decode JWT segments or API payload fragments while debugging
Encode small text values for data URLs, configs, or examples
Convert URL-safe Base64 values used in web applications

Frequently asked questions

Is Base64 encryption?

No. Base64 is an encoding format, not encryption. Anyone can decode a Base64 string back to the original data.

What is URL-safe Base64?

URL-safe Base64 replaces characters that can be awkward in URLs, making encoded values easier to use in query strings and paths.

Does this tool upload my text?

No. Encoding and decoding run locally in your browser.

URL Encode / Decode

Encode and decode URL percent-encoded strings online. Supports both encodeURIComponent (encodes all special characters) and encodeURI (preserves URL structure characters like /, ?, #, &). Bidirectional — paste encoded or decoded text to convert instantly.

JWT Decoder

Decode and inspect JSON Web Tokens (JWT) without a secret key. View the header algorithm, payload claims (iss, sub, exp, iat), and signature. Check token expiration and identify standard claims at a glance.

HTML Entities

Encode special characters to HTML entities and decode HTML entities back to readable text. Safely escape characters like <, >, &, ", and ' to prevent XSS and display issues in HTML documents.

Unicode Converter

Convert text characters to Unicode code points (U+XXXX), UTF-8 byte sequences, HTML numeric entities, and JavaScript escape sequences. Supports the full Unicode range including emoji, CJK, and special symbols.