XLSX, the Excel workbook
XLSX is the Microsoft Excel format: a workbook with one or more sheets, data types and formatting.
Strengths: It is what almost any office expects.
Limits: Other apps and databases usually ask for CSV to import data.
Data
Convert XLSX to YAML
Turn your XLSX files into YAML in seconds. Everything happens in your browser: nothing is uploaded to any server.
XLSXYAML
Drag your files here
Or paste them with Ctrl+V. They never leave your device.
Why convert XLSX to YAML?
Other apps and databases usually ask for CSV to import data. As YAML it is readable and ready for a configuration file.
About the formats
YAML, readable configuration
YAML represents the same data as JSON but with indentation instead of braces, meant to be read and written by hand.
Strengths: It is the configuration format of Docker, Kubernetes, GitHub Actions and many tools.
Limits: Indentation matters: one extra space changes the meaning.
How to convert XLSX to YAML
- 1Drop your XLSX files in the box, paste them or pick them from your device.
- 2Check that the target is YAML and open the options if you want to adjust it.
- 3Press “Convert” and download each YAML, or all of them in a ZIP.
Frequently asked questions
Is my XLSX uploaded to a server to turn it into YAML?
No. The XLSX to YAML conversion runs entirely in your browser, with code downloaded from this site and executed on your device. You can check it in the Network tab of the developer tools or by going offline after the page loads.
Is there a size limit?
Up to 1 GB on desktop and about 200 MB on mobile, although a huge spreadsheet may take a few seconds.
Can I convert several XLSX files at once?
Yes. Drop as many XLSX files as you like: several are converted at the same time, depending on your processor cores, and when they finish you can download each YAML or all of them in a ZIP.