Size & fit for Shopify

Measured,
not guessed.

Upload your size chart. Norn reads it, recommends each shopper’s size on the product page, and remembers it across your store. Fewer people order the wrong size, and fewer send it back.

Add Norn to Shopify See it work

Free to start · installs in minutes · no code · see it live on Lumen ↗ (password: fit)

NornLive preview
Takes 30 seconds

Let’s find the size
that actually fits.

Answer two quick measurements and we’ll recommend your size for this piece. No guesswork, no returns.

1
Tell us your measurements
Chest and sleeve — on a ruler, no typing.
2
Get your size
One recommendation, matched to this product’s chart.

Saved to your account for next time
Step one
Upload a chart
Step two
Norn reads it
Step three
Shoppers get their size
01

Returns are an apparel problem,
and they start with size.

When a shopper can’t tell which size fits, they do one of two things: leave, or over-order — buying two or three sizes and sending most back. Both cost you. A confident size recommendation lifts the sale and prevents the return.

70%

of apparel returns come down to fit and size.

Source · McKinsey

$890B

in merchandise returned across US retail in a single year.

Source · NRF / Happy Returns

72%

of retailers now charge for returns, while 81% of shoppers still expect them free.

Source · NRF

1 in 3

shoppers abandon a purchase when they’re unsure of their size.

Bold Metrics

02

How it works

Three steps, and the longest one takes seconds.

Step one

Upload your chart.

An image or a PDF works. Use the chart you already have, with no reformatting.

Step two

Norn reads it.

It becomes a sizing grid in seconds. You review it, then publish. You stay in control.

Step three

Shoppers find their size.

A short “Find my size” quiz names their size, and Norn remembers it everywhere that chart applies.

Norn reads the chart, you review it.
03

What makes Norn different

Most size-chart apps stop at a pop-up. Norn holds your chart as real data, and that changes what’s possible.

One chart, one source of truth.

Read it once. It drives the size guide on the page, the recommendation, and every product that shares it. Update it in one place and it changes everywhere, so you never duplicate a chart per product.

Protects you

Accessible by design, which protects you.

Because Norn holds your chart as real data, it renders a proper, screen-reader-friendly table instead of a flat image. Image-only charts are a known accessibility gap, and they invite ADA complaints. An accessible chart fixes that.

No lock-in

Your data stays yours.

Measurements live in your own Shopify customer profiles, and your chart lives in Shopify’s native data. It’s portable and exportable, with no lock-in. There’s no data flowing back to us, so you’re never billed per quiz or per shopper.

It shows its work.

Norn names a size and shows the shopper why, comparing their measurement against your chart. On Studio and up, it also nudges them if they pick a different size. No black box.

04

What your shoppers see

The whole flow, on your product page: two ways in, a quiz on a ruler, the size with the math behind it, and a quiet nudge if they stray. Step through it.

Vidda Packable Anorak in sage

Vidda Outdoor

Vidda Packable Anorak

$186.00

Size — select

XSSMLXL
Norn block
05

What you see

Norn isn’t one widget — it’s six native Shopify surfaces, across your storefront, admin, checkout, and customer accounts. Each one is built on Shopify’s own extension points and unlocks with your plan.

Free

Fit Quiz

Find my size on the product page.

Storefront · theme block

Studio +

Product Insights

Fit metrics on the product page.

Shopify Admin · products

Studio +

Customer Fit

Fit profile on the customer page.

Shopify Admin · customers

Studio +

Order Fit

Recommended size next to what shoppers ordered.

Shopify Admin · orders

Growth +

Checkout Nudge

Size reminder at checkout.

Checkout extension

Growth +

Customer Account Fit

Saved measurements in the customer account.

Customer accounts

06

One size, across the
whole fit lifecycle.

A shopper’s size keeps mattering long after the product page. Norn is built to carry it into the moments that decide whether they buy, come back, or send it back. Open a card to watch the data move.

On the roadmap
Post-purchase Returns & exchanges See the flow
On the roadmap
Re-engagement Email & SMS See the flow
07

Built by a craftsman.
Shaped by merchants.

Norn isn’t an after thought feature bolted onto a bigger suite. It’s the work of a small team led by someone who has spent years building Shopify apps at scale, and identified through that experience that fit data is broken.

We’re opening a small circle of founding advisors — apparel merchants who shape the roadmap and get the best fit experience on Shopify before anyone else.

  • You run an apparel store on the cutting edge — you reach for the new thing before it’s obvious.
  • You love good tooling and have real opinions about what a fit tool should do.
  • You want a direct line to the team building it — not a support queue.
Become a Norn advisor A few merchants, chosen for fit. No cost — real influence.
+7.5%

It’s not just craft for its own sake. Shoppers who use a size finder are worth more over time — an independent, peer-reviewed study measured a ~7.5% lift in lifetime value.  Source

08

Start free. Pay when it’s working.

Plans are gated by recommendations a month, never by shopper or by quiz. Generous chart limits on every tier, with new installs getting Growth free for 14 days.

Yearly · 2 months free
Start here
Free
$0 / mo

Free forever for up to 100 recommendations a month.

  • Up to 10 charts
  • Chart reading
  • The full “Find my size” quiz
  • Accessible size tables
  • Inches & centimeters
  • One-line insight teaser
Studio
$19 / mo

Up to 1,000 recommendations a month.

  • Up to 50 charts
  • Everything in Free
  • Mismatch nudge on the product page
  • Shopify Admin Fit Insights
Growth
$39 / mo

Up to 5,000 recommendations a month.

  • Up to 250 charts
  • Everything in Studio
  • Saved customer measurements
  • Mismatch nudge at checkout
  • Norn managed Shopify segments
  • Customer Account fit profile
Scale
$129 / mo

Unlimited recommendations. No bands, no overage.

  • Everything in Growth
  • Unlimited recommendations
  • Unlimited charts
  • Priority support

Flat plans. No per-shopper fees, no surprise bills.

Move up a band only when your recommendations do. Add Norn to Shopify →

Norn

What’s a Norn?

Three women, one very old spreadsheet.

In Norse myth, the Norns sat at the root of the world and twined the threads of fate — measuring out, quite literally, what would become of gods and mortals alike. The word norn may even come from an old verb meaning to twine: to twist thread.

We borrowed the name because that’s the small, quiet job we do for your store — take a measurement, and tell you what fits. Less destiny, more knitwear. But the idea is the same: measure the thread, name the size, no guessing.

— Measured by fate.

09

Questions, answered plainly

It installs as a native theme block on your product page. No code, and it doesn’t break when you switch themes.
A photo or PDF of the one you have is enough. Norn reads it into a sizing grid for you to review and publish. You can also create a chart manually if you prefer.
It’s grounded in your own chart, matching the shopper’s measurements against your real sizing, and it shows the math. It’s never a black box.
Measurements are stored in your Shopify customer profiles, owned by you and portable. Norn displays a customer's size recommendation as part of native Shopify customer accounts.
No. Flat monthly plans, gated by volume bands, never a per-interaction fee. We think pay per interaction is dumb.
Norn ships six native Shopify surfaces: the Fit Quiz on your product page, Product Insights, Customer Fit, and Order Fit in your admin, a Checkout Nudge at checkout, and Customer Account Fit in native customer accounts. All of it is built on Shopify's own extension points — no theme hacks.
Both. Shoppers pick, and Norn handles the conversion. Try the unit toggle in the preview at the top of the page.

Name the size.
Keep the sale.

The right size prevents the return, and it’s live on your product page in minutes.

Add Norn to Shopify See it on a storefront

Free to start · installs in minutes · cancel anytime