Base64 Encode and Decode

Base64 Encode & Decode is a clean, fast tool for converting text to Base64 and back — completely offline. Whether you are a developer debugging a token, pasting an inline data URI, or just curious what a Base64 string says, this app gives you the answer the moment you type.

WHAT YOU CAN DO
• Encode any text to Base64
• Decode Base64 back to readable text
• Switch to the URL-safe variant with a single toggle
• Copy the result to the clipboard in one tap
• Load a sample or clear the field instantly

UNICODE-SAFE
Text is treated as UTF-8 before encoding, so emoji, accents and non-Latin scripts round-trip correctly every time.

CLEAR, NOT CLEVER
Invalid Base64 is flagged with a friendly message instead of a wrong answer or a crash. What you see is exactly what the bytes decode to.

LEARN AS YOU GO
A built-in Learn tab explains, in plain language, what Base64 is, where it is used (data URIs, email/MIME, JSON Web Tokens) and the difference between the standard and URL-safe alphabets.

IMPORTANT: NOT ENCRYPTION
Base64 is an encoding, not encryption. Anyone can decode it instantly, so it hides nothing. Never use it to protect passwords or secrets.

PRIVACY
The app collects no personal data and works fully offline — your text never leaves your device. Ads are served by Google AdMob, which may use an advertising identifier as described in Google's policies.

Light and dark themes, a tiny download, and no clutter. Download Base64 Encode & Decode and convert with confidence.