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Base64 Encoder & Decoder Online

Free online Base64 encoder and decoder — encode or decode Base64 strings instantly.

Base64 Encoder & Decoder Online — Detailed Guide

Base64 is a binary-to-text encoding scheme that represents binary data using a set of 64 printable ASCII characters. It is commonly used to encode data for transmission over media designed to handle text, such as email or URLs. Base64 encoding increases data size by approximately 33%, but it ensures that binary data remains intact during transport. Our free online Base64 converter supports both encoding (text to Base64) and decoding (Base64 to text) operations. Just paste your text and convert it online — fast, free, and secure.