Etsy's personalization character limit is 1,024. A 30 by 40 cm plaque holds about 10 at a 40 mm cap height. The platform maximum is not a design limit.
If you sell personalized goods, the character cap belongs to the artwork. Set it there, and the buyer cannot type a name that breaks the layout.
What matters
- Measure the usable print width and the final cap height before you set the field.
- Use 0.6 × cap height as the average character width for a sans serif.
- Cap the field at the fit count, then test the longest name you expect.
Measure the print area in millimetres
Start with the artwork, not the product photo. Mark the left and right edges of the area that can carry text.
Subtract the safe margin on both sides. A 300 mm face with a 25 mm margin each side leaves 250 mm of usable width.
Measure the cap height next. Cap height is the height of a capital letter, not the font size. A 40 mm cap height fills a plaque without crowding the edge.
Write both numbers down. Guessing at "medium" or "large" is how overflow starts.
Measure the file at 100% zoom, not the product photo. A mockup shrinks the print area to fit the screen, and the shrink hides the overflow.
Use 0.6 times cap height as the average character width
For a plain sans serif, one character averages about 0.6 times the cap height. A 40 mm cap height gives a 24 mm average width.
Divide the usable width by that number. 250 mm divided by 24 mm gives 10.4 characters. Round down to 10.
Run the same math at other sizes:
- 150 mm width, 30 mm cap height: 150 ÷ 18 = 8.3, so 8 characters.
- 250 mm width, 40 mm cap height: 250 ÷ 24 = 10.4, so 10 characters.
- 300 mm width, 20 mm cap height: 300 ÷ 12 = 25 characters.
The estimate is conservative. A name with narrow letters fits more. A name with wide letters fits fewer. The cap protects the wide case.
A 5 by 7 inch frame is smaller than it looks. A 120 mm usable width at a 20 mm cap height holds 10 characters. The larger count applies to a wider face.
Cap the field at the fit count
Etsy's Custom options let you add up to 5 fields per listing. Each field takes one detail: a name, a date, a font choice.
Include the character limit in the field instructions. Etsy's help page asks for limits such as character counts, and a buyer reads the field before typing.
Set the cap to the fit count, not the platform maximum. A 10 character cap on a 30 by 40 cm plaque stops the overflow before the order lands.
Use one field per detail. A single field for "name, date, and message" hides the overflow until you open the file.
Test the longest name before you publish
Type the longest name you expect into the field. "Christopher" runs 11 characters. "Alexandria" runs 10.
If the cap is 10, "Christopher" fails. Raise the cap and shrink the font, or split the name onto two lines.
Test the widest letters too. A name with W and M takes more width than the average. Add one character of slack for a name that starts with W.
Publish one proof image that shows the finished layout. Etsy's help page requires a finished personalized item as the primary image, not a blank mockup with placeholder text.
For a bag, the photo problem is separate: Custom Bag Gifting Without a Product Photo: How to Sell Bags Buyers Can't See.
What overflow costs
An overflowing name clips at the print edge or shrinks below the readable size. Either result is a reprint.
Typography errors are one of the 5 Design Mistakes That Make Your Custom Bags Look "Cheap" (And How to Avoid Them).
A reprint adds 1 to 3 production days on the fastest blanks and spends the base cost twice. A personalized item cannot return to stock, so the first copy is a full loss.
The EU handling fee is not refundable either. A reprint to the EU carries the same €2 per item charge as the first parcel.
Add the reprint cost to the time lost. A 10 day delay can push the order past the Christmas cutoff.
Set the cap on every listing before Friday
Open every personalized listing and find the text field. Measure the print area, run the 0.6 formula, and set the cap.
Do the longest name test on the three most ordered items. Fix any field that accepts more characters than the artwork holds.
Publish the changes before Friday, then connect your store so the next order arrives with a name that fits.