CSV Viewer Online with Smart Delimiter Detection and XLSX Export

Open CSV from paste or upload, review as table, adjust separators, and export spreadsheet output in seconds.

Use this tool

Local browser processing. Paste CSV or upload a file to preview, adjust delimiters, and export.

Or upload a CSV/TXT file

Accepts .csv and .txt files. Data stays in your browser.

Auto-detected separator: Virgula (,)

Rows: 0 | Columns: 0

Table sorting and filters

Visible rows: 0

Table preview

Paste CSV text or upload a file to preview the table.

Quick guide and practical context

Smart delimiter detection for mixed CSV sources

CSV exports from different systems may use commas, semicolons, tabs, or pipes. This page detects likely delimiters automatically and renders the table with minimal setup.

If detection is not ideal for your file, you can manually switch the read separator and instantly reparse rows and columns.

Paste, upload, preview, and export in one flow

You can paste raw CSV text or upload .csv and .txt files. The preview table is optimized for desktop and mobile with internal horizontal scrolling inside the tool card.

After validation, export to XLSX for Excel and spreadsheet workflows, or regenerate CSV using another delimiter when needed.

  • Read CSV from text paste or file upload.
  • Auto or manual separator selection.
  • Table preview with column and row count.
  • Convert delimiter and copy/download normalized CSV.
  • Export parsed table to XLSX.

Privacy and practical limits

Processing happens locally in your browser by default, so CSV content does not need to be sent to a backend for preview or conversion.

Very large files can still consume memory on low-end devices. For better mobile performance, split huge datasets into smaller chunks before inspection.

Frequently asked questions

Can I both paste CSV and upload a file?

Yes. The tool supports both input methods in the same interface.

Is delimiter detection automatic?

Yes. The tool detects common separators automatically, and you can override it manually anytime.

Can I export the table as XLSX?

Yes. Export to XLSX is available after parsing the CSV.

Is my CSV uploaded to a server?

No by default. Parsing and export run locally in your browser.

Helpful links to continue similar tasks without starting over.

Light shortcuts for CSV search variations, kept at the bottom to preserve focus on the tool.

Privacy and local processing

Tools on this page run directly in your browser and do not send entered content to a backend. This improves privacy and reduces latency.

CSV Viewer Online | Auto Delimiter Detection and XLSX Export | Tools Lucasqc