SizeMe
Part of the OpoShop ecosystem

Stop losing sales to
“what size am I?”

SizeMe adds a Find-my-size quiz to your product pages. Shoppers answer a few quick questions — we recommend the right size with a confidence score and auto-select it on the page. Fewer wrong-size returns, more checkouts.

SizeMe installs from your OpoShop store admin. New to OpoShop? Create your store. Already have one? Log in.

No code Installs in minutes 4.9/5 from 1,400+ stores
Your recommended size
Based on your measurements
We recommend
M
High confidence · 92%
Based on your chest measurement and this item’s fit, M is your best fit.
S
M
L
XL
Built for OpoShop · trusted by apparel & footwear stores
Meridian&CoNorthboundWillow Row Cedar AthleticMarloweSundry
~70%
of apparel returns are size/fit
−40%
wrong-size returns with a size finder
20s
to complete the quiz
+9%
lift in size-confident checkouts
Why SizeMe

Everything you need to size shoppers right

A recommendation engine, a beautiful quiz, and a dashboard that shows the money you’re saving.

Find-my-size quiz

A short, on-brand quiz on your product pages — height/weight, measurements, usual size, or a brand comparison. You choose the questions.

Confidence-scored picks

The rules-based engine matches answers to your size chart and fit model, and returns a size with a confidence score — no black-box guessing.

Auto-selects the variant

SizeMe selects the recommended size right on the product page, so the shopper’s add-to-cart uses the correct variant — no re-picking.

Returns-avoided dashboard

See quiz completions, most-recommended sizes, confidence, and an estimate of the wrong-size returns — and dollars — you’re avoiding.

Starter charts, fully editable

Pick your product type — women’s tops, men’s bottoms, shoes, kids — and SizeMe seeds a sensible chart. Tweak every measurement and fit model.

Live in minutes, no code

A guided setup wizard gets you from install to a working size finder in about a minute. Runs inside OpoShop with no theme editing.

How it works

From install to “that’s my size” in three steps

1

Set up your size charts

Pick your product types and SizeMe seeds ready-to-use charts. Adjust the sizes, measurements, and fit model to match your line.

2

Shoppers find their size

A “Find my size” button appears on your product pages. Shoppers answer a few quick questions in a clean, on-brand quiz.

3

The right size, auto-selected

SizeMe recommends a size with confidence and selects the matching variant — so more orders ship in the size that actually fits.

A quiz your shoppers actually finish

Twenty seconds, no account, no tape-measure required. SizeMe asks only what it needs and speaks in plain language — so shoppers get a size they trust and check out with confidence.

  • Height & weight, body measurements, usual size, or “what size are you in Nike?”
  • A confidence meter so shoppers know how sure we are
  • “You’re between sizes — size up for a looser fit” guidance
  • Inches or centimeters — the shopper’s choice
What size do you usually wear?
XS
S
M
L
XL
How do you like it to fit?
Snug
Regular
Relaxed
See my size →
128
Returns avoided
$1,920
Est. saved
1,043
Quiz completions
86%
Rec. accepted

See the returns you’re avoiding

The dashboard turns quiz activity into the metric that matters: fewer wrong-size returns. Watch completions rise, see which sizes shoppers land on, and track an estimate of the money you’re keeping.

  • Estimated returns-avoided and dollars saved
  • Most-recommended sizes — spot chart gaps early
  • Confidence distribution and what drives each pick
  • No shopper PII stored — analytics are de-identified
Loved by merchants

Fewer returns, happier customers

★★★★★

“Wrong-size returns were killing our margin on dresses. Two weeks after turning SizeMe on, our size-return rate visibly dropped. The setup took me five minutes.”

RM
Rachel M.
Founder, Willow Row
★★★★★

“The auto-select is the killer feature — shoppers don’t have to re-pick their size, so more of them actually check out. Feels native to our store.”

DK
Devon K.
Cedar Athletic
★★★★★

“We sell shoes, and sizing questions used to flood support. SizeMe answers them right on the page — and the dashboard shows us exactly what it’s saving.”

SP
Sana P.
Northbound Footwear
FAQ

Questions, answered

Do I need to build size charts from scratch?
No. Pick your product type in setup and SizeMe seeds an industry-standard size chart you can edit. You can also bind a chart to a specific product and SizeMe maps it to that product’s real variants automatically.
How does SizeMe know which variant to select?
SizeMe reads your product’s real size options and matches the recommended size to the correct variant, then selects it on the page — so add-to-cart uses the right size. If a recommended size is sold out, we flag it instead of adding it.
Will it slow down my store?
No. The widget is a single, tiny script (about 12 KB) with no dependencies, loaded after your page. Every action is guarded so it can never break your storefront — worst case, it simply doesn’t show.
Do you store my shoppers’ measurements?
No. Recommendations are recorded de-identified — we keep the recommended size and confidence for your analytics, never the raw measurements or any shopper identity. See our privacy policy.
What does it cost?
SizeMe installs from the OpoShop App Store. Pricing is shown on the listing there — install it on your store to get started.

Turn “what size?” into “add to cart.”

Give your shoppers the confidence to buy the right size — and keep the margin wrong-size returns would eat.