Developer Tools
Base64 Encoder / Decoder
Base64 encoding converts binary data or text into a format safe for transmission in URLs, emails, and APIs. This tool encodes text or files to Base64 and decodes Base64 strings back to text — all without sending any data to a server.
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Switch between Text mode and File mode using the tabs
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For text: paste your string and click Encode or Decode
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For files: upload any file to get its Base64 data URI
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Copy the encoded or decoded result
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Use in your API calls, CSS, or HTML as needed
🔐 Base64 Encoder / Decoder
Encode text or files to Base64, or decode Base64 strings back to text and images. Fully in-browser.
Encode Text to Base64
Decode Base64 to Text
💡 Pro Tips & Best Practices
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Base64 encoded data is approximately 33% larger than the original — not suitable for large files.
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Data URIs (Base64-encoded images in CSS/HTML) eliminate HTTP requests but increase page size.
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Base64 is encoding, not encryption — it provides no security. Do not use for sensitive data.
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Use Base64 for small icons and images embedded directly in CSS to avoid extra HTTP requests.
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When decoding, make sure the string includes padding characters (=) at the end if required.
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File-to-Base64 conversion is useful for testing API endpoints that accept Base64-encoded file uploads.
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Base64 strings look like gibberish — use the validator to confirm your string is valid before using it.