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Home » Blog » Platform Tutorials » How to Add Custom Text Field on Shopify Product Page: 2025 Guide

How to Add Custom Text Field on Shopify Product Page: 2025 Guide

by Aurora Hoang
Feb, 2025
in Platform Tutorials, Shopify

To encourage your customers to make their purchases, you must ensure they have all available information about the products. The best way to do that is to learn how to add custom text field on Shopify product page, specifically for the following:

  • Admin page
  • Comment box
  • Size chart
  • Tabs
  • Estimated delivery date
  • Line item properties

Keep scrolling for the details.

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Why A Custom Text Field Matters in Shopify

Custom text fields let Shopify merchants share more information about their products beyond the default settings, including special care instructions, supplier background, product-specific tabs, and other important aspects:

  • Not every product fits into the same mold. Hence, custom text fields help you showcase what makes this particular product stand out. Examples are electronics (warranty details or voltage specifications) and clothing (custom size guides or material percentages).
  • Managing additional data for products or orders can become overwhelming if relying solely on spreadsheets or external systems. With custom fields, you can add custom labels for internal organization, such as “seasonal” or “limited edition.”
  • The more detailed and clear your product pages are, the happier your customers will be. When customers find the information they need quickly and easily, they are likely to buy and return for more.
why-custom-field-shopify-important
Custom text fields help you showcase what makes this particular product stand out

How to Add Custom Text Field on Shopify Product Admin Page

To add custom text field on Shopify Product Admin page:

Step 1. Go to “Themes” > Customize.”

Step 2. “Choose “Default Product” in the drop-down.

Step 3. Go to “Product Information” > “Add Block” > “Custom Liquid.”

Step 4. Create the custom field.

Step 5. Click “Save.”

First, choose “Online Store” > “Themes” and click the green button “Customize” in the current theme.

add-custom-field-shopify-admin-step-1
Step 1. Go to “Themes” > Customize.”

Then, in the theme editor, choose “Default product” in the drop-down of the head page. Next, select “Product Information” > “Add Block” > “Custom Liquid” to add a new custom field on product pages Shopify.

add-custom-field-shopify-admin-step-2-3
Step 2 & 3. Go to “Product Information” > “Add Block” > Custom Liquid

After that, click “Custom liquid” under the “Product Information” tab.

add-custom-field-shopify-admin-step-4
Step 4. Create the custom field.

In the box of custom liquids, add the snippets and preview the changes live in your editor. After adding and modifying the snippet sample below, create a custom text box to input more details about the product.

<div class=”custom-field”> {{ product.custom_field }} </div>

<textarea id=”custom-print-message”placeholder=”Custom Print Message”name=” properties[Message]”></textarea>

add-custom-field-shopify-admin-step-4b
Step 4. Create a custom text box.

Finally, click “Save” once you are satisfied. Check out our Shopify Products Page guide for more information and insights!


How to Add Custom Text Field on Shopify Product Page by Types

Use the Theme Editor and its Custom Liquid to add a custom text field to the comment box, estimated delivery dates, line item properties, and tabs. For size charts, either use the product media or the description box to upload the chart image.

Now that you have learnt how to add custom text field on Shopify product page, let's move on to the following:

1. Comment box

How do you turn on the comment box (or order notes) on your cart page? Go to “Online Store” > Themes” in the Shopify admin dashboard. Find the theme you want to edit, then click “Customize” > “Theme Settings.”

add-custom-field-shopify-comment-box-step-1
Step 1. (Comment box) Go to “Themes” > “Customize” > “Theme Settings.”

Next, click on “Cart” and tick “Enable Order Notes” or “Enable Cart Notes”. Hit “Save” when you are done.

add-custom-field-shopify-comment-box-step-2
Step 2 (Comment box). Tick “Enable Cart Notes.”

2. Size chart

To add custom text field with size charts, you can either add a size chart image to the product media or add an image of a sizing chart in the description.

First, choose the “Products” tab in the admin panel, then choose the product for which you want to add a size chart.

custom-text-field-shopify-size-chart-step-1
Step 1 (Size chart). Choose the products tab in admin panel

Next, find the “Media” tab and click “Add file” or “Add from URL” to import size chart images.

custom-text-field-shopify-size-chart-step-2
Step 2 (Size chart). Click “Add file” or “Add from URL”

Or you can add size chart images directly in the description box.

custom-text-field-shopify-size-chart-optional
Optional. Add size charts from the description box.

To check the result, click the “Preview” tab.

custom-text-field-shopify-size-chart-step-3
Step 3 (Size chart). Preview the results.

3. Tabs

To activate collapsible tabs, navigate to the Theme editor from Shopify Admin. Select “Products” > “Default Product” to access the product page template.

Next, click on the “Add block” in the “Product Information” section and select the “Collapsible Tab” block.

add-custom-text-field-shopify-tabs-step-1
Step 1 (tabs). Go to “Product Information” > “Add Block” > “Collapsible Row.”

Then, click “Collapsible Row” to change the value.

add-custom-text-field-shopify-tabs-step-2
Step 2 (tabs). Click “Collapsible Row” to change the value.

In the “Collapsible” tab, add details information about the product, namely materials, shipping & returns, dimension, care instruction, etc.

add-custom-text-field-shopify-tabs-step-3
Step 3 (tabs). Add more product information.

4. Estimated delivery date

To add an estimated delivery date to a Shopify product page, you can either use a collapsible row or use the custom liquid from the Theme editor.

Navigate to the “Online Store” > “Themes” > “Customize.” Then, in the Theme editor, click “Product” > “Default Product Template.” Alternatively, utilize your previous design if you have created a custom product page template.

On the product page, include a “Custom Liquid” section and place it wherever you want. Then, insert the code into the box of custom liquid.

add-custom-text-field-shopify-delivery-date
Use the collapsible row or the custom liquid to add an estimated delivery date

For both approaches, this is how the delivery date appears on the front-end page:

add-custom-text-field-shopify-delivery-date-results
How the delivery date appears on the store's front end

Finally, click “Save” to save your changes.

5. Line item properties

Line item properties allow Shopify merchants to collect customization data from the buyer for an item added to the cart. To add line item properties Shopify, go to the Theme Editor > “Default Product,' then choose “Product Information” > “Add Block” > “Custom Liquid,” just like with the 4 previous content types.

add-line-item-properties-shopify
Use custom liquid to add line item properties Shopify

Check out the UI element generator to generate snippets if you cannot write snippets by yourself.


4 Apps to Add Custom Text Field on Shopify Product Page

Product Options and Customizer is the best Shopify app on the market for adding custom text fields. It offers diverse features and a relatively affordable pricing range (up to less than $50 per month). Other notable apps include Customify ‑ Product Customizer, Custom Product Builder, and Customily.

add-custom-field-shopify-apps
The most popular Shopify product page customization apps

Below are the pros and cons of all these 4 applications:

Shopify App

 Pros

Cons

Product Options and Customizer

(0$ to $49.9 per month)

+ Allow for limitless product options

+ 24/7 tech support
+ Free download
+ Per-option pricing; offering feature options and the customizer to boost sales.

+ A bit glitchy for higher plans (Premium Plus)
+ The variant options do not work for some Shopify themes.

Customify ‑ Product Customizer

(0$ to $30 per month)

+ Fully responsive and work on all devices.
+ Let customers envision the final result before ordering
+ Completely customize the application's appearance for diferent in-store sections

+ Slow loading
+ Limited customer support
+ Occasional server issues

Custom Product Builder

(0$ to $50 per month)

+ Items customization.
+ Unlimited custom fields: text field, record transfer, picture/shading thumbnails, quantity breakdown, and store.
+ Product personalization: Live inspection of transferred images, artwork, logos, and monograms in designated areas.

+ No Old/New sorting filters for the product list
+ Can't install more than 1 font simultaneously
+ Poor UI

Customily

(0$ to $49 per month) 

+ Allow your customers to add text, select a font and color, add images, textures, and clipart…
+ Work automation.
+ Best client services.

+ Not user-friendly
+ Takes too much time to cancel the free trial
+ No auto-save features


Tips to Design Eye-Catching Custom Text Fields

To create visually attractive custom fields, ensure they match your store's themes and pair with interactive elements (e.g., real-time character counters). Also, position fields where they naturally belong and use conditional logic to show fields only when needed.

shopify-custom-fields-tip
Keep in mind the placement and design when customizing these fields.

Match the style of your store's theme

First, make sure the fields blend harmoniously with your store's overall design, particularly in terms of existing fonts, colors, and styles. For example, if your store uses rounded buttons and a modern sans-serif font, your text fields should reflect the same aesthetic. Consistency helps build trust with your audience!

Incorporate interactive elements

Besides the overall design, interactive elements also help engage users better. Cases in point are real-time character counters, live previews of personalized text (e.g., engraving previews), or tooltips explaining field requirements. Small as they are, these touches will provide amazing visual feedback and enhance customer experience.

Position fields where they make sense

Where you place your custom text fields is just as important as their look! These fields should appear in logical locations where users expect to find them.

Specifically, a personalization field for engraving must be placed near the product description or image, not buried at the bottom of the page. Or, regarding backend fields, consider grouping them logically with related settings (such as near inventory or pricing fields) to make them easier to find and manage.

Use conditional logic for dynamic fields

Lastly, not every field needs to be visible all the time. Instead, use conditional logic to display custom fields ONLY when they're relevant.

For example, a text field for a personalized gift message should only appear if the customer selects “This is a gift” during checkout. Similarly, a field for special delivery instructions must be shown only for specific shipping methods. This dynamic approach keeps your page clean and avoids overwhelming buyers.


How to Add Custom Text Field on Shopify – FAQs

How do I add a text field to my Shopify product page?

To add a text field to your Shopify product page:

Step 1. Go to the Shopify's admin panel
Step 2. Click "Product Page" > "Customize Tab."
Step 3. Add text, images, and other fiels using the built-in customization tools.

How do I add a custom field to my Shopify product?

Here's how you add a custom field to your Shopify product:

Step 1. Go to the Shopify admin panel
Step 2. Click "Online Store" > "Theme."
Step 3. Choose the theme you want to edit
Step 4. Click “Actions” > “Edit Code.”
Step 5. Find the “product.liquid” file under "Templates."
Step 6. Replace the code line {{ product.description }} with {{ product.custom_field }}

How do I customize my Shopify product page?

Below are three main steps to customize a Shopify product page:

Step 1. In the admin panel, go to "Online Store" > "Theme" > "Customize."
Step 2. Go to "Products template" > "Add Block" to generate Custom liquid.
Step 3. Add snippets in a custom liquid box.

How do I change the meta description on my Shopify product page?

Follow these four steps to change the meta description:

Step 1. Click on the "Products" tab from Shopify's admin panel.
Step 2. Choose the product whose description you want to change.
Step 3. Add new content to the description box on the details page.
Step 4. Click the Save button.

How do I change the product button text in Shopify?

To change the product button text in Shopify:

Step 1. Go to "Online Store" > "Themes" > "Actions" > "Edit Code."
Step 2. Open your Locales folder and find the "en.default.json" file.
Step 3. Locate the product button's code in this file and change the red text.


Final Words

This article has explained how to add custom text field on Shopify product page. Simply utilize Shopify Liquid to create comment boxes, size charts, collectible tabs, line item properties, and more. Your product page looks more attractive and informative that way.

And for merchants from other platforms who want to utilize this Shopify feature, LitExtension has your back! With over 12 years of experience and a satisfaction rate of 99% across 200,000 customers, we will make sure your Shopify migration is smooth and 100% hassle-free.

For more information, check out our Shopify guide and join our eCommerce community to gain more intriguing ideas.

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Aurora Hoang

Aurora Hoang

Meet Aurora, our true Shopify geek, who's passionate about sharing her knowledge and helping businesses thrive online.

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Table of Contents
  1. Why A Custom Text Field Matters in Shopify
  2. How to Add Custom Text Field on Shopify Product Admin Page
  3. How to Add Custom Text Field on Shopify Product Page by Types
    1. 1. Comment box
    2. 2. Size chart
    3. 3. Tabs
    4. 4. Estimated delivery date
    5. 5. Line item properties
  4. 4 Apps to Add Custom Text Field on Shopify Product Page
  5. Tips to Design Eye-Catching Custom Text Fields
    1. Match the style of your store's theme
    2. Incorporate interactive elements
    3. Position fields where they make sense
    4. Use conditional logic for dynamic fields
  6. How to Add Custom Text Field on Shopify – FAQs
    1. How do I add a text field to my Shopify product page?
    2. How do I add a custom field to my Shopify product?
    3. How do I customize my Shopify product page?
    4. How do I change the meta description on my Shopify product page?
    5. How do I change the product button text in Shopify?
  7. Final Words

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