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Generate a size table from an image or spreadsheet

Guide type: Task guide Difficulty: Intermediate Applies to: Size chart tables

Use SmartSize to turn an existing size chart image or spreadsheet table into an editable size table.

This guide is for merchants who already have size information in another format and want to bring it into a SmartSize size chart.

Before you start

Make sure you have:

  • a size chart open in SmartSize
  • a clear source image or spreadsheet with your size measurements
  • the measurement unit you want to use, such as centimeters or inches
  • time to review the generated values before publishing

SmartSize can help speed up setup, but you should always check the generated table before shoppers use it.

Choose the best source

Use an image when your size chart is currently a PNG, JPG, or similar visual file.

Use a spreadsheet when your measurements are already in rows and columns, for example in Google Sheets.

If both are available, a spreadsheet is usually easier to review and cleaner to import. An image is useful when the only source you have is a designed size chart graphic.

Generate a table from an image

1. Start from a table block

In the size chart editor, add or select the table area where the measurements should appear.

Open the option to generate a size table from an image.

SmartSize size chart editor showing the Generate size table from image modal

2. Choose the size chart image

Select the image file from your computer. Use the clearest version of the chart you have. Avoid screenshots that are blurry, cropped, or too small to read.

After you choose the file, SmartSize shows the uploaded image.

SmartSize size chart editor showing an uploaded dress size chart image

3. Let SmartSize analyze the image

SmartSize reads the image and looks for size rows, measurement columns, and values.

SmartSize analyzing a size chart image

Wait for the analysis to finish before changing other parts of the table.

4. Review the generated table

When SmartSize generates the table, review the result carefully.

Check that:

  • all sizes are included
  • column names match your source chart
  • measurement values are in the correct cells
  • units are correct
  • decimals, ranges, or fractions were read correctly

SmartSize generated size table from an uploaded image

After the generated table is inserted into the editor, you can edit any value directly.

Import a table from a spreadsheet

1. Prepare the spreadsheet table

In Google Sheets or another spreadsheet tool, organize the size table clearly.

Use one row for column headings and one row for each size.

Google Sheets size chart source table

A simple structure works best:

  • first column: size names, such as XS, S, M, L
  • next columns: measurements, such as bust, waist, hips, or length
  • one measurement unit across the table where possible

2. Copy the table values

Select the table cells you want to import and copy them.

Do not include unrelated notes, empty columns, or extra formatting if you can avoid it.

3. Paste the table into SmartSize

Return to SmartSize and paste the copied table into the size table editor.

SmartSize places the spreadsheet rows and columns into the editable table.

SmartSize size chart editor showing spreadsheet size table values imported

Check the table before saving

Before you save, compare the SmartSize table with your source.

Check:

  • size order
  • column order
  • units
  • ranges and decimals
  • copied or generated values
  • mobile readability

If something looks wrong, edit the table before publishing.

Save and preview

After the table is correct, save the size chart.

Then check the desktop and mobile previews. A good size table should be easy to scan and should not require shoppers to zoom in.

Make sure the chart is set to Active so shoppers can see the table on the storefront.

Troubleshooting

The generated image table has mistakes

Use a clearer image if possible. A high-resolution image with strong contrast usually works better than a small or compressed screenshot.

You can also edit the generated table manually after SmartSize inserts it.

The spreadsheet paste looks misaligned

Check the spreadsheet source and copy only the table area. Avoid copying hidden columns, notes, merged cells, or extra rows.

Measurement units are unclear

Add the unit to the column heading or confirm the chart unit in the size chart settings. Clear units help shoppers understand the values.

What to do next

After your size table is correct, you can:

  • customize the table block style
  • add text or image blocks for measuring guidance
  • connect the size chart to more products
  • check the Size Chart button on your storefront