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Diatome in action

Three levers to turn every product into an opportunity. No friction, no development, right inside your Shopify store.

Community resale

Your customers buy and sell to each other, directly on your site. New and pre-owned live side by side on the same product page.

Product buy‑back with instant credit

Your unsold and returned items become sellable stock in a few clicks. Multi-channel, no extra logistics.

Redistribution of your unsold stock

Publish your unsold or returned items across multiple sales channels in a few clicks while reducing your carbon footprint.

#1 — Collect all your products in one place

    Your customers submit their items in 1 minute from your store. Purchase history, catalogue or search: they choose, you receive.

    Unsold stock, returns, end-of-line, prototypes: add your own inventory in a few clicks via CSV import or from your CMS.

    Each resold item displays its origin: customer return, end-of-line, community. The buyer knows exactly what they're purchasing.

    One single place for customer collection and your brand stock. No need for multiple tools.

Diatome smart collection page showing new and pre-owned products together

#2 - A dedicated product page, just like new

    Each second-hand item has its own product page with a dedicated template. Condition, quality grade and origin clearly displayed.

    Brand offers and community offers side by side. The buyer compares the brand price and the C2C price at a glance.

    The environmental impact is displayed on every listing. CO2 saved, water preserved. Real data for the customer.

    The same shopping experience as a new product. Photos, description, size, colour. Zero compromise.

Pre-owned product page with condition details, seller info and eco-impact

#3 — Engage your community and generate new revenue

    Your customer receives an email in your name: their item is sold, their gift card is ready. Guaranteed return to your store.

    Built-in loyalty bonus: each sale generates a gift card with a bonus (+20%). The customer comes back to buy new.

    On every C2C sale by bank transfer, you earn a commission. By gift card, you build loyalty. Double win.

    Every transaction displays the environmental impact: CO2 saved, water preserved. Real results!

Customer engagement interface for buyback and trade-in programs

Ready to make your e‑commerce circular ?

Three times more reasons to join the circular economy

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#4 — The smart basket

    New and second-hand in the same basket. Your customer adds a new item at 89 euros and two second-hand pieces at -44%. One checkout, one order.

    The savings are obvious. Original price crossed out, reduced price, "-44%" badge: the "Second-hand savings" line shows the total discount in real time.

    Identified seller, built-in trust. Each item displays its seller, verified individual or pro. The buyer knows who they're buying from.

    Every new product page drives traffic to your second-hand catalogue. Without cannibalising, by complementing.

Shopping cart mixing new and pre-owned items

#5 — Your new products become a second-hand channel

    On every new product page, an integrated widget displays available second-hand alternatives. Brand offers and community offers, side by side.

    Your out-of-stock sizes are no longer a dead end. The widget automatically suggests second-hand offers in the right size.

    Two sources, one single place: your brand stock (returns, unsold) and items sold by your community appear together, with crossed-out prices and visible discounts.

    Every new product page drives traffic to your second-hand catalogue. Without cannibalising, by complementing.

Product discovery widget showing pre-owned alternatives

#6 — Manage everything from your dashboard

    Orders, revenue and second-hand products at a glance. Your second-hand KPIs are centralised, updated in real time.

    Each item displays its origin (customer submission, non-conforming return, bulk import). You know exactly where every product comes from and the details.

    End-to-end order tracking: shipping status, label, delivery. Everything is tracked with no manual intervention.

    Moderation, products, orders and shop settings: everything is accessible from a single interface, designed for your team.

Atelier workflow for inspecting and reconditioning returned items

And behind the scenes?

Discover how Diatome automates the creation, management, and resale of your pre-owned products.

Request a demo →

Your product listings already exist

    Diatome reads your existing catalog, even archived and unpublished listing, and generates resale-ready product pages

    Title, description, photos, sizes: everything is retrieved automatically. No more time-consuming manual entry

    Your customer adds their product photos, Diatome handles the rest

    No existing listing? Atelier generates a complete page from photos alone

Dashboard showing resale program performance and revenue metrics

Your collection grows on autopilot

    Generate additional revenue from your dead stock: returns, unsold items, end-of-line products

    Operational in hours, not weeks : no technical skills required

    Your former customers list at least 4 products per week, with zero effort on your part

    Your customers buy new and pre-owned in the same cart — your catalog grows naturally

Trade-in summary screen with item valuation and credit details

Buy back in-store, sell online

    The customer brings their old product to the store

    The sales associate evaluates the condition via the Diatome interface and put it back online on sale in seconds

    The customer leaves immediately with a store credit

    The product goes live online automatically: listing created, price adjusted, published

Not on Shopify?

Discover our flexible API and integrate Diatome with your existing e‑commerce platform.

Discover our API →

The 3 pillars of Diatome

Circularity

Every product deserves more than one life. By integrating pre-owned directly into your store, you're not selling for less: you're creating more value. For your customers, for the planet, and for your margin.

Community

Your customers aren't just buyers: they're your first ambassadors. When they resell, they talk about you. When they buy back, they come back to you. Circularity builds a bond that advertising can't buy.

Simplicity

Zero development. 100% plug & play. One dashboard, one clear view. Diatome plugs into your Shopify in a few clicks and automates what nobody has time to do manually. You steer, Diatome delivers.

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