Column Resizer JS

Interactive tool to create and resize table columns with real-time preview and export options.

Request Feature / Support

5,180+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how Column Resizer JS processes input data instantly inside your browser.

Sample Input Image dimensions: 4000 x 3000 pixels (File size: 5MB PNG)

Computed Result Output WebP Image: 1920 x 1440 pixels (File size: 350KB, 88% reduction)

Execution Mode Client-Side In-Browser JS

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About This Tool

Column Resizer JS is a fully functional online tool that allows you to create HTML tables and dynamically resize their columns. You can add/remove rows and columns, edit cell content, adjust column widths using drag handles or precise input fields, and preview the table in real-time. The tool supports exporting your table data to CSV, HTML, or JSON formats. It's perfect for web developers, designers, and anyone needing to customize table layouts without coding.

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How to Use

Click 'Add Row' or 'Add Column' to build your table.
Double-click any cell to edit its content.
Drag the column resize handles (vertical lines between headers) to adjust widths visually.
Use the column controls below to set precise pixel widths or percentages.
Preview the table in the live display area.
Click 'Export Table' to download your data as CSV, HTML, or JSON.

Frequently Asked Questions

Find Quick Answers

Can I import an existing table?

Currently, the tool creates tables from scratch. You can manually enter data by editing cells. Future updates may include import features.

Are the column widths responsive?

The table preview uses fixed pixel widths for accuracy. For responsive web design, consider using percentage-based widths or CSS media queries separately.

Is my data saved?

All data stays in your browser session. It's not sent to any server, ensuring privacy. Export your work to save it locally.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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