Base64 Online Tools

Base64 Decoder

Paste a base64 string to decode it. Supports data URLs and file type detection.


About Base64

Base64 is a text encoding scheme that represents binary data in ASCII string format. It uses 64 printable characters (A-Z, a-z, 0-9, +, /) to encode any binary data, making it safe for transmission across systems that only handle text. Each base64 character represents 6 bits of data.

Common use cases include embedding images in HTML, encoding credentials, storing binary files as text, and data URIs. The decoder automatically detects data URL formats (e.g., data:image/png;base64,...) and extracts the relevant information.

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