🔒 100% Client-Side • No Uploads
🔤 Base64 Encoder/Decoder
Encode and decode Base64 strings and files directly in your browser.
Encode and decode Base64 strings and files directly in your browser.
All encoding happens in your browser. Your data never leaves your device.
Instant encoding and decoding with no server processing.
Once loaded, encode and decode without internet.
No subscriptions, no hidden costs, completely free.
This Base64 encoder runs entirely in your browser using JavaScript. When you encode or decode data, the processing happens completely on your device. We never upload your text or data to any server, which means your information remains completely private and secure. This is especially important when encoding sensitive data like API keys or credentials.
Unlike online Base64 tools that send your data to remote servers for processing, our client-side approach ensures zero data collection, zero server processing, and zero privacy concerns. Your data is processed locally and never transmitted over the internet.
Base64 is an encoding scheme that converts binary data into ASCII text format. It uses 64 characters (A-Z, a-z, 0-9, +, /) to represent data. This makes it safe to transmit binary data through systems that only support text, like email or JSON APIs.
No, Base64 is not encryption. It's simply an encoding method to convert data into a different format. Anyone can decode Base64 text back to its original form. If you need actual encryption, use our Text Encryptor tool instead.
Base64 encoding typically increases data size by about 33%. This is because it converts 8-bit binary data into 6-bit chunks, requiring more characters to represent the same information. The trade-off is compatibility with text-only systems.
Yes! This tool is completely free with no hidden costs or subscriptions. We believe privacy-first tools should be accessible to everyone.
We use Google Analytics to track page views for website improvement, but we never see, store, or collect your encoded data. All processing happens locally in your browser.