Base64 Encoder & Decoder
Local ProcessingEncode and decode string or binary data to and from Base64 representation instantly. Fast, browser-native conversions with support for unicode text strings and binary document arrays.
UTF-8 Text to Encode
Conversion Result
Frequently Asked Questions
🔒 Are my text strings or uploaded files sent to servers?▼
No. In alignment with our privacy standard, all conversions are executed 100% locally in your web browser. No text payloads or file binaries are ever uploaded or transmitted over the network.
🌐 Does it support complex international characters (Unicode)?▼
Yes. Standard browser Base64 functions only accept Latin1 alphabets. Our tool incorporates advanced binary streams using `TextEncoder` and `TextDecoder` to support Hindi, Arabic, Chinese characters, emojis, and all UTF-8 ranges without corruption.
📁 What is the maximum file size supported?▼
We support files up to 20MB in memory. Since base64 expands binary size by roughly 33%, processing very large files in single-threaded JS runtimes might cause browser lag, so the 20MB limit ensures optimal interface response times.