CSV viewer.
Open a CSV or TSV file. Search, edit and download your data.
No uploads. No saved documents.
Open, edit and download a CSV file
Open a CSV or TSV file, find a row and edit a cell without opening a spreadsheet. Double-click to edit on desktop or tap on a phone. Download the updated file with leading zeroes and large IDs intact.
- Open a CSV or TSV file, or paste your data
- Search every row, sort columns and edit cells
- Download your edits with leading zeroes and large IDs intact
Common questions
Can I open Excel files or TSV?
CSV and TSV work directly. For Excel, export the sheet as UTF-8 CSV first; XLS and XLSX files are not supported. The separator is detected automatically, or you can choose it yourself. Turn off First row is a header if the first row contains data.
How do I edit and download my CSV?
Double-click a cell, tap it on a phone, or focus it and press Enter. Save applies your edit; Cancel or Escape discards it. To edit a header, turn off First row is a header. Download CSV includes all rows in original file order, even when filtered or sorted. It keeps the separator; tab-separated files download as TSV. Formulas stay plain text here, but spreadsheet apps may evaluate them after download.
How do sorting and searching work?
Search covers all rows, including those on other pages. Click a column header once to sort ascending, again for descending and a third time for original order. Numbers sort without rounding large IDs; empty cells stay last. Saved edits update the search and sort results.
Are my files uploaded, and what are the limits?
No files or pasted text are uploaded or saved by Tulo. The limits are 10 MB, 50,000 rows including the header, 200 columns and 500,000 cells. A file that cannot be opened leaves the previous table available. Leaving or refreshing clears the workspace, so download your edits first.