Validate Arrow Files Online
Validate Arrow file structure in your browser. Check null counts, distinct values, and data types for every column — no upload required.
About this tool
Run a data quality check on a Arrow file and get a column-by-column report of null counts, distinct values, and detected types. Spot problems before they cause failures downstream — no data leaves your browser.
Frequently Asked Questions
What does the Arrow validation report show?
For each column: detected data type, total row count, null count, null percentage, and distinct value count. It gives you a fast overview of data quality before loading into a database or pipeline.
Does validating a Arrow file modify it?
No. Validation is read-only — it generates a report in your browser and does not modify or download anything.
What should I look for in the Arrow validation results?
High null counts may indicate missing data or parsing errors. Unexpectedly low distinct counts can reveal collapsed or corrupted columns. Columns detected as a mixed type often contain formatting inconsistencies.
Is my data private?
Yes — completely. Your file is never uploaded to any server. Everything runs locally in your browser using WebAssembly — processing happens entirely inside your tab. Once you close the tab, nothing is retained.
What is the maximum file size?
The free limit is 50 MB. For larger files, performance depends on your device's available memory — most modern machines handle 500 MB to 1 GB comfortably.
Related Tools
Convert Excel to Arrow Online
Convert Excel files to Arrow format directly in your browser. No upload required — your data never leaves your device.
Convert Arrow to YAML Online
Convert Arrow files to YAML directly in your browser. Download clean, human-readable YAML — no upload required.
Convert YAML to Arrow Online
Convert YAML files to Arrow format directly in your browser. No upload required — your data never leaves your device.
Convert Arrow to XML Online
Convert Arrow files to XML directly in your browser. Download a structured XML document with one element per row — no upload required.
Convert Arrow to SQL Online
Convert Arrow files to SQL INSERT statements directly in your browser. Copy or download the generated SQL — no upload required.