⚡ CLIENT-SIDE · PRIVATE · SECURE

Base64 Encoder

Convert plain text, UTF-8 strings, and data payloads into standard or URL-safe Base64. Strict client-side conversion ensures your credentials and tokens never leave your browser.

Instructions: Paste plain text or strings into the input workspace. Configure URL-safe or padding options, and copy or download your Base64 output.

Parameters

Current Mode

✨ Base64 Encoder

Active

Base64 Options

URL-safe Base64 (replace + with -, / with _)Remove padding (= characters)

Try Examples

Input Data

Output Result

What is Base64 & URL Encoding?

Base64 Encoding is used to translate binary structures or characters into a safe ASCII string representation. This is commonly used in HTML data URIs, basic authorization headers, or storing encryption keys.

URL Encoding (also known as Percent Encoding) converts special characters in URLs into a valid `%` format (like spaces to `%20`). This prevents query string parameters from breaking browser URLs.

Paste Source Text

Input your plain text, JSON payload, API credentials, or code snippets.

Select Encoding Mode

Choose standard Base64 or enable URL-safe encoding (`-` and `_`) with optional padding removal.

Copy or Download

Instantly copy the generated Base64 block or download as a text file. Zero network transmission.

Related Protection Tools

Base64 Decoder

Decode Base64 payloads back into readable UTF-8 text strings.

URL Encoder

Percent-encode URL parameters and query strings safely.

PII Anonymizer

Mask, redact, or replace sensitive data fields like names and emails.

Documentation & Guide

How to Encode Text and Strings to Base64 in JavaScript

Learn how Base64 converts binary bytes into ASCII characters and how to implement URL-safe Base64.

Read Guide