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Utility Suite

Base64 Encoder/Decoder

Encode and decode text or files to Base64 with URL-safe options, batch processing, and 100% client-side privacy.

Text Mode
Input Size0 B
Output Size0 B
Size Delta0% (0 B)
Detected FlavorStandard
MIME / Magic BytesText / Unknown
Shareable URL (Text inputs only)
In-memory only (cleared on refresh)

No session history recorded yet.

Frequently Asked Questions

How does Go Advanced mode work?

Clicking Go Advanced unlocks developer features including text character encodings (UTF-8, ASCII, UTF-16, Latin-1), MIME line wrapping, byte-level hex view inspection, Data URI formatting, code snippet exports, batch line/file processing, and Base32/Hex converters.

How does Fullscreen Mode work?

Click the expand icon in the top control bar to expand the workspace into full screen view. This provides maximum screen real estate for working with large Base64 files, hex inspections, or bulk lists.

What is the difference between Standard and URL-Safe Base64?

Standard Base64 uses + and / with = padding. URL-Safe Base64 replaces + with - and / with _ and strips = padding so strings can be safely used in Web URLs and filenames without URL encoding.

Is my text or file data secure?

Yes. All encoding, decoding, file reading, and byte rendering occur 100% client-side in your browser JavaScript engine. No file buffers or text strings are sent to any remote server.