Encode input
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Encoded size
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Decode input
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Quick note
Use the left panel to encode plain text and the right panel to decode any valid Base64 string back into readable text.
Decoded size
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What this tool does
Encodes plain text into Base64 and decodes Base64 strings back into readable text without leaving the browser.
Why it is useful
It helps when you need to inspect API payloads, tokens, fixtures, or copied encoded values quickly without reaching for a terminal command or external site.
Examples
Encode a JSON snippet before sending it in a test payloadDecode a Basic Auth header or mock token segmentCheck a Base64 fixture copied from logs or docs
Encode to Base64
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Decode from Base64
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