Base64 Encode / Decode Guides
How to Decode Base64 Online (Step-by-Step Guide)
Learn how to decode base64 online for free. Convert Base64 text or files back to binary in your browser — step-by-step, no upload, no server.
Base64 Encode/Decode in JavaScript: btoa(), atob(), and Unicode
How to encode and decode Base64 in JavaScript using btoa() and atob(). Complete guide covering Unicode strings, binary data, Node.js Buffer, and practical code examples.
Base64 URL Safe Encoding: What It Is and Why It Matters
Learn how Base64 URL-safe encoding works, why standard Base64 breaks URLs and JSON, and how Base64url is used in JWT, web APIs, and filenames.
Base64 vs Hexadecimal Encoding: Which Should You Use?
Compare Base64 and hexadecimal (hex) encoding on efficiency, readability, and use cases. Learn when to choose Base64 for data transfer or hex for debugging.
How to Convert Images to Base64 Data URLs
Learn how to convert images to Base64 data URLs for embedding in HTML, CSS, and JavaScript. Covers browser tools, Node.js methods, and performance best practices.
What is Base64? A Complete Guide for Beginners
Learn what Base64 encoding is, how the 3-bytes-to-4-characters algorithm works, and when to use it. Includes practical examples and common use cases.