Convert strings to and from Base64 instantly with optional
URL-safe mode and padding control. Everything runs in your
browser—nothing ever reaches Mini Tool Showcase.
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Quick references
• Base64 outputs are always multiples of 4 characters. Toggle padding on to include "=" for alignment.
• URL-safe mode swaps "+" for "-" and "/" for "_" so strings can be embedded in URLs without escaping.
• Whitespace and newlines are stripped automatically when decoding, making it easy to paste wrapped payloads.