Open a CSV and read it as a proper table — sortable, searchable, with the columns lined up. Your file never leaves this page. Everything happens in your browser, and there is no upload endpoint to send it to — that is checked by a build gate that fails if any network code reaches a tool’s bundle.
How to do it
- Drop your CSV onto the box, or paste it.
- Click a column heading to sort by it.
- Type in the search box to filter across every column.
Questions
Will it handle my file’s separator?
Yes. Commas, semicolons, tabs and pipes are all detected from the file itself, so a European Excel export opens correctly rather than as a single column.
What about commas and line breaks inside cells?
They are read correctly. Quoted fields may contain commas, line breaks and quotes.
How large a file can I open?
Every row is read and the true total is always reported. The free viewer draws the first thousand rows at a time, which is most spreadsheets. Pro adds a renderer that draws only the rows on screen, so files of any size stay responsive.

