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Excel Viewer

Upload an Excel file to inspect workbook metadata such as sheet names and counts.

Accepted

XLSX, XLS, CSV, Text

Limit

1 file · up to 10 MB

Result

Spreadsheet → preview

Handling

Auto cleanup after 1h

Usage

Today:

Plan:

Usage unavailable.

Read-only viewer mode

This tool analyzes and previews your file without converting or rewriting content.

Upload your file

or

Max file size: 10MB

Max files per run: 1

Supported formats: XLSX, XLS, CSV

Upload exactly one spreadsheet (XLSX, XLS, or CSV), up to 10MB. We will inspect it in read-only mode.

Smart file detection

✓ images uploaded successfully

Ready to resize

✓ 1 image uploaded successfully

Ready to process

✓ images uploaded successfully

Ready to process

✓ Resize Image input ready
Resize input preview

Ready to resize

Saved tool settings

Save your current settings and apply them with one click.

Pipeline Builder

Build a multi-step flow (compress, convert, resize, merge) and run it in one upload.

Saved presets

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Read-only mode: metadata and preview only, no conversion output files.

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Input summary

PDF compression summary

Original size

Compressed size

Reduced by

Pages

Success! Your PDF pages were converted successfully.

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Success! Your PDF was split successfully.

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Success! Your JPG images were combined into a PDF. Success! Your PDF is ready.

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CSV processing summary

Input rows

Output rows

Output files

Rows removed

Output size

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How it works

1

Choose an XLSX, XLS, or CSV file

Choose an XLSX, XLS, or CSV file

2

Process the file in read-only viewer mode

Process the file in read-only viewer mode

3

Navigate the available sheets and review cell data

Navigate the available sheets and review cell data

🔗 Related tools 3 related tools

About Excel Viewer

Use the CodeStorms Excel Viewer Online when you need to open an XLSX, XLS, or CSV file without installing Microsoft Excel. Upload the spreadsheet, inspect worksheet names, rows, columns, and cell values, and confirm the workbook structure before sharing, importing, or converting it. The viewer is intentionally read-only, so you can review received Excel files without changing the source document.

→ Open an XLSX or XLS file on a device without Microsoft Excel. → Inspect spreadsheet rows, columns, sheet names, and cell values. → Review a CSV or Excel file before converting or cleaning the data.

Related guides and workflows

📦 Supported formats 2 file types

XLSX XLS and CSV spreadsheets

❓ Frequently asked questions 2 answers

The file is uploaded over HTTPS for processing and removed according to the active retention policy.

Yes. The tool runs from a modern web browser and requires no desktop installation.