About

One person, one question: what does the shop actually keep?

Canopio is built and run by Deng Daqiang (DQ) · Contact · support@canopio.io

Why Canopio exists

Each Etsy fee is easy to understand on its own: $0.20 to list, 6.5% on the order, a processing fee, and sometimes an Offsite Ads fee. Adding them up for a real order is where it goes wrong. The 6.5% also applies to the shipping you charge. The fixed $0.20 and $0.25 take a much bigger share of a $4 sticker than of a $40 print. An Offsite Ads sale can take another 12–15% of the order. A listing that looks fine on paper can quietly lose money.

Canopio is my attempt to make that math visible: one order at a time for free, or across the whole shop if you want it.

Who is behind it

Canopio is a one-person project. I'm Deng Daqiang, and I design, build, support and pay for it myself. There's no team, no investors and no company behind it. When you email support, I'm the one who reads it and replies.

The project launched under the name FeeMath and was renamed Canopio in September 2026. It has nothing to do with Canopio Limited (the solar company) or any other business using the name, and it is not affiliated with, endorsed by or certified by Etsy, Inc.

What it does

• Free fee calculator. Enter one order to see the transaction fee, payment processing, listing fee, Etsy Ads spend or Offsite Ads (with the $100 cap), your costs, and the true profit. It can also work backwards from a target margin to a price. It runs in your browser.
• Free listing score. Paste a title, tags and description to get a 0–100 score, calculated in your browser. Optional AI rewrites cost $2.99 for 10 or $9.99 for 40. Failed rewrites aren't charged.
• Shop Audit, $9.90 once. Connect your shop through Etsy's official OAuth to see every live listing ranked from worst margin to best, with suggested prices, the Pricing Bible and a sold-order backtest. There's a 14-day refund. No subscription.

How your data is handled, in plain words

• The calculator, the listing score and the CSV fallback run in your browser. Nothing you type there is uploaded.
• Shop Audit is different. When you click Connect Etsy, Etsy asks you to grant read-only access to your shop, listings, transactions and the email address on your Etsy account. Your shop data is then fetched and processed through Canopio's server in Japan so the audit can run. Canopio never writes to your shop. Disconnecting deletes the stored tokens, and you can also revoke access in Etsy under Account settings → Apps.
• If you buy a rewrite, the text of that one listing is sent to an AI model provider to write the new copy.
• Payments go through Creem, the merchant of record. Card details never touch Canopio.

The full details are in the Privacy Policy.

How I keep the numbers honest

Fee rates come from Etsy's own Help Center (fees and taxes, payment processing, Offsite Ads). Etsy changes its fees from time to time, and your Shop Manager is always the final word. If you spot a rate that has moved or a calculation that looks wrong, please tell me. Fixing it is the top priority.

Canopio doesn't promise rankings and doesn't sell search-volume data. It does one thing: it shows you the margin.

Get in touch

Questions, bugs, refund requests or feedback: support@canopio.io, or see the contact page.