Is my table data uploaded to a server?
No. The tool parses, transforms, previews, and exports data locally in your browser without uploading your input.
Data & Tables
Data Table Editor
Edit tabular data from CSV, TSV, JSON, XML, YAML, Excel, HTML tables, and Markdown tables locally in your browser.
Tool
Data Table Editor
Edit tabular data from CSV, TSV, JSON, XML, YAML, Excel, HTML tables, and Markdown tables locally in your browser.
This tool runs in your browser. Your input is processed locally and is not uploaded.
About this Tool
Use this Data Table Editor as a browser-only workspace for small and medium tabular datasets. Import a supported format, review the detected columns, edit cells, add rows, reorder fields, and export the table to a practical output format. It is a broader editor than the CSV-specific tool because it starts from an internal table model and can support multiple input and output formats without sending data away from the device.
Examples
- name,email,role,active Ada Lovelace,ada [at] example.com,Analyst,true Ben Ortiz,ben [at] example.com,Manager,false Cy Chen,cy [at] example.com,Designer,true
- | Task | Owner | Status | | --- | --- | --- | | Import leads | Ada | Done | | Clean contacts | Ben | In progress | | Export report | Cy | Planned |
Frequently Asked Questions
How are data types detected?
Values can be inspected as strings first, then optionally detected as numbers, booleans, dates, or empty values. You can keep text mode when exact formatting matters.
What file sizes are practical in the browser?
Small and medium tables are the best fit. Very large files can use a lot of memory because parsing, previews, and exported results all live inside the browser tab.
Can one tool handle every nested data structure?
No. The editor works best after the input has been converted into a clear table. Deeply nested or mixed structures may need flattening or manual field selection.
Are Excel macros or formulas executed?
No. Spreadsheet tools read and write cell values only. Macros are not run, and a complete formula calculation engine is not promised.