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XML Base64 variants

发布于

本指南内容

This standards reference on Base64Encoding explains xml in plain language for developers and everyday users.

Everything important stays private: try the matching converter or tool in your browser — files and tokens are not uploaded.

Read the full English article below for code samples and edge cases, or switch language anytime from the menu. We keep expanding translations from real user feedback.

接着试用这些私密工具

Some XML schemas need opaque binary identifiers that remain valid as NMTOKEN or Name values. Instead of + and /, they swap the last two Base64 alphabet characters:

Variant Chars 62 / 63 Padding Typical use
XML name token . - none NMTOKEN / NMTOKENS attributes
XML identifier _ : none XML Name / ID-like values

Both omit padding. They are rare compared with RFC 4648 and Base64URL, but appear in niche enterprise XML and legacy interoperability specs.

How to work with them here

  1. Paste a suspicious value into the Base64 standard detector.
  2. Convert to standard Base64 with normalization.
  3. Or decode directly on Base64 decode after selecting the matching XML standard.

If your value contains - and _ only, it is more often Base64URL (JWT, OAuth) than an XML variant.

常见问题

Does this page upload my data?

No. Articles are static. Linked tools run locally in your browser unless a feature explicitly needs a network relay.

Can I request a translation or a new tool?

Yes — use the private feedback form. We prioritize what users ask for across languages.

What is the fastest way to try xml?

Open the homepage Base64 converter or the related tools linked on this page and paste a sample.

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