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.
Last updated: May 29, 2026
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Buy me a coffeeWhat 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
Paste a Base64-encoded YAML string into the input area
Enable URL-safe Base64 if the value uses - and _
Keep Pretty-print YAML enabled for normalized indentation
Click Decode Base64 to YAML
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.
YXBwOiB3ZWJ0b29sc3BsYW5ldAplbnZpcm9ubWVudDogc3RhZ2luZw==app: webtoolsplanet
environment: stagingBase64 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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