YAML to PDF
Upload or paste YAML, validate it, then export the content as a PDF.
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Upload YAML File
You can upload a YAML file or paste YAML below.
About YAML to PDF
This YAML to PDF tool validates YAML syntax, normalizes formatting, and exports the result as a readable PDF document. The entire process runs in your browser using the js-yaml library (v4.1.0) for YAML 1.2 specification parsing and jsPDF for PDF generation.
It is useful for creating printable documentation of Kubernetes manifests, Docker Compose files, CI/CD pipeline configurations, infrastructure-as-code definitions, and application configuration files that need to be shared or archived in a universal format.
YAML to PDF Conversion Process
The conversion follows these steps:
- Parse: Input text is parsed using js-yaml library
- Validate: YAML syntax errors are detected and reported
- Normalize: YAML is re-emitted with consistent formatting
- Render: Formatted text is written to PDF using monospace font
// Conversion flow: YAML String → js-yaml.load() → JavaScript Object → js-yaml.dump() → Formatted YAML String → jsPDF → PDF Document
PDF Output Settings
| Setting | Value |
|---|---|
| Page size | A4 (595 × 842 points) |
| Orientation | Portrait |
| Font | Courier (monospace) |
| Font size | 10 points |
| Line spacing | 14 points |
| Margins | 40 points (approx. 14mm) |
Common YAML Formats for PDF Export
| Format | Use Case |
|---|---|
| Kubernetes Manifests | Deployments, Services, ConfigMaps, Secrets |
| Docker Compose | Multi-container application definitions |
| GitHub Actions | Workflow definitions (.github/workflows/) |
| GitLab CI | .gitlab-ci.yml pipeline configs |
| Ansible Playbooks | Infrastructure automation scripts |
| App Configs | application.yml, config.yaml files |
YAML Syntax Features
The tool supports YAML 1.2 specification features:
- Comments: Lines starting with # (preserved in output)
- Anchors and Aliases: &anchor and *alias references
- Multi-line strings: Literal (|) and folded (>) blocks
- Data types: Strings, integers, floats, booleans, null, dates
- Complex structures: Nested mappings, sequences, combinations
Common Use Cases
- Documentation: Create printable specs of Kubernetes or Docker configs
- Code reviews: Generate PDFs of YAML changes for offline review
- Compliance: Archive infrastructure configs for audit trails
- Training: Create handouts showing YAML structure examples
- Sharing: Send readable configs to team members unfamiliar with YAML
Common YAML Syntax Errors
- Tab characters: YAML requires spaces, not tabs
- Inconsistent indentation: Use same number of spaces per level
- Missing colon: Key-value pairs need colon + space
- Bad list syntax: List items need space after dash (- item)
- Unquoted special chars: Some strings need quotes
Limitations
- Large YAML files may cause browser memory issues
- PDF contains text only, not syntax-highlighted YAML
- Custom YAML tags require server-side processing
- Very long lines are wrapped to fit page width
Frequently Asked Questions
- How does YAML to PDF conversion work?
- This tool parses YAML using the js-yaml library, validates syntax, normalizes the formatting, then renders the text as monospaced content in a PDF document using jsPDF. Each line is wrapped to fit within PDF page margins for readable output.
- What happens if my YAML is invalid?
- The tool validates YAML before conversion using js-yaml. If the YAML has syntax errors (incorrect indentation, missing colons, tab characters), you'll see an error message describing the issue. Fix the YAML syntax before generating the PDF.
- Does the PDF preserve YAML formatting?
- Yes, the PDF preserves the YAML structure with consistent indentation using a monospace font (Courier 10pt). The tool normalizes the YAML format before export, ensuring clean, readable output.
- Can I convert large YAML files to PDF?
- The tool processes YAML in browser memory, so practical limits depend on available RAM. For very large files (10+ MB), consider splitting the YAML or using server-side PDF generation tools designed for bulk processing.
- What PDF settings are used?
- PDFs are generated in A4 size (595×842 points), portrait orientation, with 40-point margins. Text uses Courier 10pt monospace font with 14pt line spacing for optimal readability of indented YAML.
- What YAML features are preserved in the PDF?
- All YAML 1.2 features are preserved: comments, anchors (&ref) and aliases (*ref), multi-line strings (| and >), and nested structures. The js-yaml library parses and re-emits the YAML with consistent formatting.