Free Online CSV & Excel Viewer — Search, Filter & Sort Data Tables
Open, Filter & Search CSV & Spreadsheet Tables. Interactive data grid for CSV, TSV, and spreadsheet tables. Column sorting, multi-column search filters, and clean CSV export.
What is Data Grid and what does it do?
The Excel & CSV Data Grid Analyzer is a free online CSV viewer and spreadsheet reader that opens CSV, TSV, and text-based table files with instant sorting, multi-column search, filters, and clean CSV export — no Excel or Google Sheets required.
A virtualized data grid renders even 50,000+ row datasets smoothly, and all parsing stays inside your browser so confidential company spreadsheets are never uploaded.
- Open .csv, .tsv, and .txt table files as an interactive data grid.
- Sort any column ascending or descending with one click.
- Search and filter across thousands of rows and columns instantly.
- Scroll huge datasets smoothly thanks to virtualized rendering.
- Export the filtered result back to a clean CSV file.
How does Data Grid work?
The parser splits your file into rows and columns locally using the correct delimiter (comma, tab, or semicolon), then loads the records into a virtualized table that only renders the rows currently visible on screen.
Sorting and filtering operate on the in-memory dataset, so they apply instantly even to large files. Export re-serializes the visible records into CSV and downloads it — zero network involved.
100% private: all processing happens locally in your browser using client-side WebAssembly, WebCrypto, WebAudio, and HTML5 Canvas. Your files are never uploaded to any server.
Who needs Data Grid?
Data analysts & analysts-in-training
Quickly open, sort, and search CSV exports from databases or tools without launching Excel.
Office workers
View spreadsheet attachments on machines where Excel or Google Sheets is unavailable.
Privacy-conscious teams
Inspect salary, customer, or financial tables with 100% local processing and no cloud tool.
Developers
Inspect exported CSV/TSV data from APIs or logs and re-export cleaned versions.
Supported file formats
Excel & CSV Data Grid Analyzer opens and processes the following file extensions directly in your browser:
.csv.tsv.txtHow to use Data Grid — step by step
- 1
Select CSV or TSV File
Drag and drop any spreadsheet or comma-separated table.
- 2
Instant Virtualized Table
The data grid renders thousands of rows instantly with virtualized scrolling.
- 3
Sort, Filter & Export
Sort by any column header, type to filter rows, and export clean data.
Frequently asked questions
Can it handle large CSV files with 50,000+ rows?
Yes! Our virtualized DOM table engine only renders visible rows, making scrolling fast even with huge datasets.
Is my company spreadsheet data uploaded anywhere?
Never. All data parsing occurs strictly in your browser's local RAM. Zero data leaves your computer.
Can I filter data by specific columns?
Yes, instant search and column-based sorting make locating records effortless.
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