Base64 Tool
Encode and decode Base64 locally for quick text handling.
What is Base64 Encoding?
Base64 turns binary data into text so it can travel through email, HTML, JSON, URLs, and other text-only systems. It is a transport format, not protection.
Benefits: Encode or decode text and binary data, supports UTF-8, local-only processing, and no upload step.
Best for: Data URIs, JWT debugging, email transport, and moving text through text-only systems.
Limitations and tradeoffs
- Base64 is encoding, not encryption, so sensitive data should not be treated as protected.
- Very large binary payloads can cause high memory usage in the browser.
- Malformed or partial strings can decode with errors depending on source validity.
Read this before you convert
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Next step
Need a different route? Check the next tool in this cluster instead of starting over.
Browse Developer toolsQuestions before you use it
Is Base64 the same as encryption?
No. Base64 is encoding, not encryption. Anyone can decode it. Use proper encryption for sensitive data.
Why does Base64 output end with '=='?
Base64 uses padding characters ('=') to ensure output length is a multiple of 4.
Is my data safe?
Completely. All processing happens locally in your browser. Nothing is sent to any server.