WebToolsPlanet
Converter Tools

Base64 to YAML

Decode Base64 strings that contain YAML and immediately validate the decoded content. Pretty-print the output, then copy it or download it as a .yaml file.

Decode YAMLValidate syntaxPretty-printBrowser based

Last updated: May 29, 2026

Client-Side Processing
Input Data Stays on Device
Instant Local Execution

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What is Base64 to YAML?

Base64 to YAML converts an encoded YAML payload back into readable configuration text. YAML often appears encoded inside CI variables, app configuration, secrets transport, API payloads, or support logs where indentation and line breaks need to survive a text-only channel.

This tool decodes the Base64 text, validates the result as YAML, and can reformat the output with consistent indentation. It is focused on the decode direction so the page has the right defaults, examples, and related links for YAML inspection.

How to Use Base64 to YAML

1

Paste a Base64-encoded YAML string into the input area

2

Enable URL-safe Base64 if the value uses - and _

3

Keep Pretty-print YAML enabled for normalized indentation

4

Click Decode Base64 to YAML

5

Copy or download the decoded YAML output

Common Use Cases

  • Inspecting encoded YAML configuration from CI systems or deployment logs.
  • Recovering YAML snippets that were wrapped in Base64 for transport.
  • Checking whether decoded YAML has valid indentation before using it.
  • Pretty-printing encoded YAML payloads from API integrations.
  • Converting decoded YAML onward to JSON or XML.

Example Input and Output

Decode a small YAML app configuration from Base64 and inspect the normalized output.

Base64 input
YXBwOiB3ZWJ0b29sc3BsYW5ldAplbnZpcm9ubWVudDogc3RhZ2luZw==
Decoded YAML
app: webtoolsplanet
environment: staging

Base64 is not encryption

Anyone can decode the output back to the original YAML. Use encryption separately for confidential configuration.

Frequently Asked Questions

Does this validate YAML after decoding?
Yes. The decoded text is parsed as YAML, and syntax errors include the parser message and location when available.
Can it handle URL-safe Base64?
Yes. Enable URL-safe mode for values that use - and _ instead of + and / or omit padding.
Does pretty-printing change comments?
Pretty-printing reserializes parsed YAML, so comments may not be preserved. Turn it off if you need the exact decoded text.
Is my YAML uploaded?
No. Decoding, validation, and formatting run locally in your browser.

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