CSV Viewer & Converter
View and query CSV files, then export as JSON, XLSX or Markdown.
How to csv viewer & converter
- Drop in a CSV or TSV file — the tool previews the first rows immediately.
- Filter, sort and select columns in the table view.
- Export in the format you need.
About this tool
CSV is the lingua franca of tabular data: every database, every spreadsheet application, and almost every analytics tool can export it. The format is also just barely structured enough to be annoying — different delimiters, optional quoting, inconsistent line endings, encoding disasters from mixing Excel on Windows with data from a Linux export — and just barely unstructured enough that a general-purpose editor handles it better than a text file.
The streaming architecture means file size is not a practical concern. A CSV of server access logs with five million rows loads and browses at scroll speed because only the visible rows are in the DOM at any point. Sorting triggers a background sort of the full dataset and swaps in the new order. Export works the same way — the output is written row by row rather than materialising the entire dataset in memory at once.