File type / text
.yaml
Human-readable text or code. Easy to inspect and version-control.
Best for: Source code, configuration files, logs, and documentation that should stay transparent to collaborators.
Type family
text
Subtype
yaml
Default handling
Inline-capable
Handling verdict
Modern browsers can usually display this media type without downloading it first.
The media type is text-like, but this record does not declare a charset.
HTTP content encoding can usually reduce this format further.
Text files rarely carry threats, but scripts can execute commands. Review before running.
HTTP response headers
Content-Type: text/yaml
Content-Disposition: inline; filename="example.yaml"
X-Content-Type-Options: nosniffThe MIME type describes the payload, Content-Disposition controls whether the browser previews or saves it, and nosniff prevents the browser from silently substituting a guessed type.
HTML file input
accept=".yaml,.yml,text/yaml"Use this value on <input type="file"> to steer the picker toward .yaml, its known aliases, and files reporting text/yaml. It improves selection, but it is not validation—check the bytes again after upload.
Registry ledger
declared valuesMIME type
text/yaml
Registry source
Not declared
Character set
Not declared
Compressible
Yes
Known aliases
.yml
Same MIME type
.yml
How to work with .yaml
operational notesOpen it with the format-aware tool first
Start with VS Code, Sublime Text, Any plain-text viewer. Normalize line endings and explicit UTF encodings when sharing across operating systems. If the file came from someone else, keep the original untouched and work on a copy so a failed conversion cannot destroy the only source.
Safety note
Text files rarely carry threats, but scripts can execute commands. Review before running.