Settings reference

Chart editor

Setting	What it does
Title	The chart name, shown in the dialog heading and in the charts list.
Columns	The header row. Add, rename, reorder, or remove a column and every row follows.
Rows	The measurement grid. Cells accept numbers or text.
Paste from a spreadsheet	Takes a block of tab separated cells copied from Excel or Google Sheets. Replace the table swaps the whole grid, header line included.
Unit system	Centimeters, Inches, or Both. Both shows a toggle on the storefront.
Convert into the other unit	Fills the second unit system from the first, so you enter measurements once.
Measuring guide image	An image shown under the table. PNG or JPG, up to 5 MB, checked by its leading bytes rather than its file name. Pro only.
Measuring guide instructions	Free text explaining how to take each measurement. Pro only.
Make default	Marks this chart as the fallback for products that no rule matches.

Duplicate copies a chart and appends copy to the title. Delete removes the chart and any rule pointing at it.

Rules

Field	What it does
Chart	Which chart the rule assigns.
Match on	Product type, vendor, tag, or collection.
Value	The exact product type, vendor, tag, or collection handle to match.
Priority	Lower numbers win. Use gaps of ten so you can slot a rule in later.
Products matched	A live count of the products the rule currently matches. Collection rules count from the collection itself.

Size guide button block

Setting	What it does
Link text	The label on the storefront, for example Size guide.
Alignment	Where the link sits inside its block.
Show icon	Adds a small ruler icon before the label.
Text style	Link, underlined link, or button.

Place this block directly under the variant picker in the theme editor. The dialog it opens is keyboard operable, closes on Escape and on a backdrop click, and returns focus to the link that opened it.

Size chart block

Setting	What it does
Heading	Optional heading above the table.
Show unit toggle	Shows the centimeter and inch buttons when the chart carries both.
Maximum width	Caps the table width. The table scrolls inside its own container on narrow screens.
Show measuring guide	Includes the guide image and instructions under the table on Pro.

Product override

Every product carries a pinned Size chart metafield of type metaobject reference. Set it and that product ignores the rules. Clear it and the rules apply again.

Plan gating

	Free	Pro
Price	$0	$7.99 a month
Charts	One	Unlimited
Assignment rules	Yes	Yes
Both storefront blocks	Yes	Yes
Centimeter and inch toggle	Yes	Yes
Measuring guide image and instructions	No	Yes

Every Pro line is enforced on the server rather than hidden in the interface, so a request that goes around the admin is refused rather than honored.

Shopify hosts the plan selection page, so changing plan happens through the app and is billed with your store.

Still stuck? Send it through the support form and you will have a reply inside two business days.