ESC Size Charts not working? How to check, save your charts and pick an alternative

If ESC Size Charts has stopped showing on your product pages, you are not the only one. Several reviews posted on its Shopify App Store listing between June and October 2026 describe charts that disappeared and emails to support that got no answer. In most cases the fix is the same. Confirm what your storefront actually shows, copy your size tables out while you still can, and move them to a no-app setup or another app before your busiest weeks.

The app is made by Eastside Co and was earlier listed as Size Charts & Size Guide - ESC. The checks below work for any size chart app that has gone quiet.

What reviewers of the app are reporting

The listing shows a 3.3 rating from 140 reviews. Most of those reviews are five stars and many are years old; 13 are one star, and six of the one-star reviews were posted in 2026. In their words:

• 7 October 2026, RDKLU (India, over 7 years using the app): "This app has not been working properly for the past few MONTHS, no response from the support !!"
• 2 October 2026, Amalli Talli (United States, almost 8 years): customers asked "why the size charts weren't up", and the store says "They don't answer emails, quick chats or phone calls."
• 29 September 2026, Own Your Drama (India, over 5 years): "The App is suddenly not working."
• 10 August 2026, Monet's Pond (India): "The app backend is not opening".
• 6 August 2026, Søciety (Australia, over 4 years): "Was working perfectly but stopped working - have emailed support with no response".

To be fair to Eastside Co, the listing is still live, it carries the Built for Shopify badge, and older reviews praise fast support. But the last developer reply we found on the listing dates from April 2023, and none of the 2026 complaints has an answer. One reviewer writes that "it does appear this company is defunct"; we found no announcement from Eastside Co confirming that. For your store the rule is simpler. If the chart is gone and nobody replies, plan as if no fix is coming.

Is your size chart still showing? A 10-minute check

Before you switch anything, find out exactly what shoppers see. Some causes are on your side and quick to fix.

1. Open three product pages in a private window, one from each product type that should have a chart. Look for the size chart link or button near the variant picker and click it. Note which ones work.
2. Repeat on your phone. Check that the table scrolls sideways instead of being cut off.
3. Look in the theme editor. Go to Online Store, Themes, Customize. Open the App embeds icon in the sidebar and check whether ESC is listed and switched on. Then open a product template and look for an ESC app block in the product information section.
4. Check whether you changed themes. Shopify's help page on theme apps says that if you change your published theme, "you'll need to re-activate those apps in your new theme as they won't be active by default." If you published a new theme recently, start here.
5. Check the product tags. ESC assigns charts by tags, collections, products, vendors or product type. A bulk edit to tags or collections can leave a chart that exists but matches nothing.
6. View the page source. On desktop, right-click the product page, choose View page source and search for a number that only appears in your chart, such as a chest measurement. If it is there, the data still loads and you can copy it.

If the app's admin will not open and the chart is missing even with the block or embed in place, the problem is on the app's side.

Does ESC use script tags? The 1 March 2027 deadline

Shopify's deprecation notice sets two dates. Since 1 October 2026, apps can no longer create or update script tags. On 1 March 2027, "Shopify will stop injecting script tags into storefronts." Anything an app loads that way disappears from your store on that date.

ESC's listing says the app is "Fully compatible with Shopify 2.0 using app blocks", and its data access section also asks to edit "Online Store script tags". From outside, we cannot tell which method your setup uses. To find out:

• Search the page source for var urls. Shopify loads script tags from that list, and each URL usually contains the app's domain.
• Switch off ESC's app block or embed on a duplicate theme and preview it. If the chart still appears, something else is loading it.

Our article on Shopify deprecations in 2026 and 2027 covers the script tag check and the other dates that hit older apps.

Save your ESC size charts before you switch

Do this first, even if the app still works today. A 2024 review on the listing reads "Could not export our size charts and there is no reply from their support", so do not count on a single export.

1. Try the built-in export. The listing includes "Import and export charts" on the Premium plan (4.99 USD a month). The free Basic plan does not list it.
2. Copy every table by hand as a backup. Open each chart on your storefront, select the whole table, copy it and paste it into Google Sheets or Excel, one tab per chart. Pasting usually keeps the rows and columns.
3. Write down the assignments. For each chart, list the tags, collections, vendors or product types it was attached to. Your product tags stay in Shopify after you uninstall, so a new app with tag rules can reuse them.
4. Save the images. If your charts include how-to-measure drawings, download them or find the original files.
5. Check the numbers against a reference. While the tables are open, compare your US, UK and EU columns with our clothing size conversion chart. Old tables often carry a typo nobody noticed.

Option 1: replace ESC without an app

For a store with one or two charts and one market, Shopify's own method may be enough. Its pop-up tutorial uses a size chart as the example:

1. In Settings, Metafields and metaobjects, Products, add a definition for the size chart with the type Page.
2. In Online Store, Pages, create a page with your table and set it to visible.
3. In the theme editor, add a Pop-up block to the product information section and connect it to the metafield with the dynamic source icon.
4. On each product, pick the right size chart page.

Shopify's own text spells out the limits. It "requires a theme that supports dynamic sources", "you can link only one page in the product metafield", and a product without a page gets a pop-up that "is blank". You also assign pages product by product, which hurts if ESC was matching hundreds of products by tag. Our comparison of Shopify size chart apps covers this option and six apps in more depth.

Option 2: an ESC Size Charts alternative with flat pricing

ESC's appeal was its price of 4.99 USD a month for unlimited charts. None of the well-reviewed apps we checked matches that price, but several stay flat as your order count grows. We ordered the table by that test, so the apps with no plan priced by order volume come first.

MP Size Chart (Shopplaza) is the safest pick for most ESC users. Its free plan already includes AI size recommendations, unit conversion and a size guide page, and the listing says: "Switching apps? We'll migrate your size charts for free." Paid plans cap AI recommendations (2,000 on Pro).

CSC Size Chart (TaskHusky) is the cheapest way to unlimited charts here at 6.99 USD, and Grow includes showing the chart by country, import/export and unit conversion. It also offers free migration and done-for-you setup. Its Plus plan is "priced by monthly orders", from 29.99 USD up to 299.99 USD, so stay on Grow or Advanced unless you need unlimited recommendations.

Kiwi has the most reviews and a strong size recommender with analytics. It imports charts from CSV, images or product descriptions, which helps when an ESC export fails. The catch is that on Plus and Ultimate, the listing says "Additional charges apply based on order volume."

Plainfee Size Charts (ours, and new)

Plainfee Size ChartsSize charts that show every shopper their own country's sizes, with how-to-measure steps in 31 languages.See how it works

We built Plainfee, so read this with that in mind. It is new on the Shopify App Store, has no reviews yet, and has no fit recommender or analytics. What it does fit is the ESC situation, because you can paste each table straight from the Excel or Google Sheets backup you made above, and the app reads country columns such as US, UK and EU so each shopper sees their own sizes first. It has no ESC importer (its one-click import is for Kiwi only), so the spreadsheet is the route. Pro is a flat 14.99 USD a month with unlimited charts, tag and vendor rules and no fees per order, and charts are stored in your store as Shopify metaobjects, so they stay if you uninstall. It loads through a theme app extension, with no script tags. You can install it from the Shopify App Store and start on the free plan.

Migration checklist: moving off ESC

Plan the move for a quiet day, not the week of a sale. If you are also preparing for November, our Black Friday checklist for Shopify lists the other things to test.

• Export from ESC if you are on Premium, and copy every table into a spreadsheet anyway.
• List each chart's assignment rules (tags, collections, vendors, product types).
• Install the new app on a duplicate theme first and rebuild one chart end to end.
• Recreate the assignment rules and spot-check five products per chart.
• Confirm the new chart appears as an app block or app embed you can see in the theme editor.
• Turn off ESC's app block and embed, then publish the theme.
• Uninstall ESC and cancel any paid plan from the Shopify admin.
• Search your page source for leftover ESC code and for var urls entries that point to it.
• Check product pages again after a week, and once more after 1 March 2027.

If you sell footwear too, our shoe size chart gives US, UK, EU and Japanese sizes with foot length in cm and inches, ready to paste into whichever app you choose. Keep the spreadsheet after you migrate, because it is the one copy of your size data that no app controls.

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