How to add text curve effect to Shopify products

When curved text matters (and when it's overdesign)

Curved text shines on:

• Circular logos and badges — bottom-arc text below a center symbol is the classic layout
• Mug wraps — text that follows the curve of the mug reads better than straight text wrapping around
• Pet tags, dog collars, key fobs — round-format products

Curved text is overdesign on:

• Flat rectangular products (signs, plaques, simple t-shirts) — straight text is cleaner
• Long sentences — arching long text just looks awkward

Match the effect to the product shape.

Step-by-step setup

1. Install Print It My Way. Curve effects are built into the text field. Install the app from the Shopify App Store.
2. Open the product (mug, badge, circular logo). Pick a product where curved text makes sense — a circular wax-seal logo, a mug wrap, a round metal badge, a circular pet tag.
3. Add a text field with curve enabled. In the personalizer editor, add a text field. Toggle 'Allow curve effect' and pick the default curve type: arch, circle (top of circle), circle-bottom (lower arc), or wave.
4. Set the curve radius and angle. For arched and circular text, set the radius matching the print area (e.g. a 3-inch circular badge has a ~1.5-inch radius). Set the angle the text should span (180 degrees for a full top half, 90 degrees for a tighter arc).
5. Decide if the customer can adjust the curve. Two approaches: (1) lock the curve so it always matches the print area exactly — customer just types text. (2) let the customer adjust radius and angle for creative control. For most products, lock it.
6. Test character count limits. Curved text needs more space than straight text — long words on a tight arc look squished. Set a character limit appropriate for the radius and span (typically 20-30 for a half-arc, 8-12 for a tight 90-degree arc).
7. Verify print-file rendering. Place a test order. The print file should have the text rendered as a curve at print resolution — not as straight text that the printer is expected to bend.

The four curve types that cover 99% of use cases

• Arch (top) — text follows the top of an arc, reading left-to-right. Used for ribbon banners and the top of a circular badge.
• Arch (bottom) — text follows the bottom of an arc, also left-to-right. Used for the bottom of a circular badge.
• Full circle — text wraps around the full circumference. Used for round seals, pet tags, and rim text on coasters.
• Wave — text follows a sine wave. Decorative; used sparingly for novelty products.

Letter spacing on curves — the detail that separates pro from amateur

Naive curve algorithms just rotate each letter around the curve. Result: letters touch on the inside of the arc and gap on the outside. Looks wrong.

What good curve rendering does: it adjusts letter spacing along the curve so each letter has consistent visual spacing — slightly more space on tight arcs, slightly less on wide arcs. Print It My Way's curve renderer does this automatically; the customer just sees clean text.

Print output should be the curve, not the straight text

This is where lots of personalizers fail: preview shows curved text, print file contains straight text and a 'curve = arch' tag, and the customer's engraver gets straight text plus a sticky note that says 'arch this'.

The print file should contain the actual curved text — rasterized at print resolution or as vector outlines that follow the curve. Print It My Way generates both formats automatically; no manual interpretation on the fulfillment side.

Frequently asked questions