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compare UTF-8 encoding, BOM, whitespace and CRLF/LF line endings byte for byte.
Convert XML to Base64
Encode XML as standard or URL-safe Base64 while preserving the source representation. Review, copy or download the result.
Base64 utility · Fast, exact Base64 conversion
What this tool does
This page encodes XML into Base64 without applying format-specific validation or transformation. Use Standard or URL-safe output according to the receiving protocol, then copy or download the value.
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Review output and byte details
1. Input
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2. Action
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4. Quick actions
5. Base64 information
DescriptionBase64 represents bytes as text; it is not encryption.
AlphabetA-Z, a-z, 0-9, +, /, =
Input size0 characters / 0 bytes
Output size0 characters / 0 bytes
PaddingUses = to complete a four-character group.
StatusReady
How it works
Input bytes
101010 111100 110101 ...
Split into 6-bit groups
101010 111100 110101 ...
Convert to indexes
42 60 53 ...
Base64 characters
q 8 1 ...
How to convert XML to Base64
Paste the XML source exactly as it should be encoded.
Keep Encode selected and choose the output option shown by the tool.
Review the output and byte information, then copy or download the result.
Output and format behavior
The XML source is encoded without validation. Declarations, namespaces, whitespace, processing instructions and any BOM remain part of the source bytes.
Use Standard Base64 for the normal RFC 4648 alphabet. Use URL-safe only when the receiving system expects Base64URL; padding rules can differ by protocol.
Expert tip
Validate the decoded document with a format-specific tool after conversion; successful Base64 decoding proves only that the byte representation was recoverable.
When this is useful
Typical workflows include:
- Inspect or transport XML used in SOAP, SAML, feeds or application configuration without changing its source text.
- Place a value in a configuration field that accepts text but not arbitrary bytes or line breaks.
- Create a reproducible test fixture without manually rewriting the source bytes.
Limitations and safety
Important constraints:
- Base64 normally adds about one third to the byte payload, before any data-URL prefix or surrounding markup.
- Base64 is reversible encoding, not encryption. Anyone who receives the string can decode the original bytes.
- The converter works with the supplied text or bytes; it does not parse, validate, minify, pretty-print or repair the document.
Troubleshooting
The source is not valid in its own format
Base64 conversion can still succeed; validate the original document with a format-specific tool.
Frequently asked questions
What exactly is preserved?
The XML source is encoded without validation. Declarations, namespaces, whitespace, processing instructions and any BOM remain part of the source bytes.
Does this page validate the source format?
No. It converts the supplied text or bytes. Use a dedicated parser, formatter or validator when syntax correctness matters.
What is the difference between standard Base64 and Base64URL?
Standard Base64 uses + and /. Base64URL uses - and _ and may omit padding; choose the form required by the receiving system.
Do whitespace and line endings change the Base64 value?
Yes. Whitespace, indentation, BOM and CRLF/LF choices are part of the source bytes, so visually similar documents can produce different Base64 strings.
Related Base64 tools
Continue with the localized page that matches the next operation:
Paste your input above, run the conversion, and copy or download the result.