Tips, guides & feed know-how.
Practical advice on product feed management, marketplace optimization and e-commerce best practices from the Feedyio team.
Heureka Ověřeno zákazníky: what it is and how to set it up
Ověřeno zákazníky is Heureka’s free verified-reviews program and the trust badge Czech and Slovak shoppers look for. Here’s what it solves, the blue vs. gold certificate, how to activate it step by step, and how to measure Heureka conversions from your Shopify store with Feedyio.
Read article→Why Google Merchant Center disapproved your products (and how to fix the 10 most common errors)
A disapproval in Merchant Center means your products are off Shopping and your ads are paused. Here is how to read a disapproval, the ten reasons it happens most often, and the exact fix for each - from price mismatch to image-too-small to missing GTIN.
Read article→GTIN, EAN and identifier_exists: getting product identifiers right in your Google feed
GTIN is the corner of the Google feed spec people get wrong most often - when it is required, what to send for handmade or private-label goods, and how to avoid a false identifier_exists claim. Here is exactly what to send, with examples.
Read article→Multi-currency, multi-country Google feeds with Shopify Markets (without the currency-mismatch errors)
Selling across borders with Shopify Markets but getting "inappropriate currency" or price-mismatch disapprovals in Google Merchant Center? The usual culprit is IP-based currency switching that shows Google's crawler a different price than your feed. Here's how to structure one feed per market so country, language and currency always agree.
Read article→Árukereső "Megbízható bolt": what the trusted-shop badge is and how to earn it
The green Árukereső badge isn’t decorative - ratings feed product-listing ranking, so certified shops get cheaper, better placement in Hungary’s biggest comparison site. Here’s what "Megbízható bolt" is, the two certification levels, how verified reviews are collected, and how to turn it on for your Shopify store.
Read article→Pazaruvaj "Коректен магазин": Bulgaria's trusted-shop badge, explained
Pazaruvaj is Bulgaria's biggest price-comparison site, and "Коректен магазин" is its free trusted-shop badge. One rule decides it: keep a 4.2+ average over the last 90 days. Here's what the badge means to Bulgarian shoppers, how reviews are collected, how to register and activate the program in about 20 minutes, and how to get your Pazaruvaj feed right with Feedyio.
Read article→Zboží.cz reviews: how verified-customer ratings work and how to turn them on
Most merchants think you "switch on" reviews on Zboží.cz. You don’t. You deploy the standard conversion code that includes the customer email, and Seznam emails your buyers to rate the shop. Here’s how Zboží.cz reviews work, the 4-review rule, when buyers are asked, and how to wire it up on Shopify with Feedyio.
Read article→Zboží.cz conversion measurement: the setup that unlocks verified reviews and smarter bids
Zboží.cz conversion measurement gives you order and revenue data for bidding and ROI - and it’s also what turns on verified-customer reviews. The catch is picking standard vs. limited correctly. Here’s what the conversion code sends, why standard is the only real choice, and how to set it up on Shopify with a custom pixel.
Read article→How to start selling on Kaufland Global Marketplace from Shopify
One registration on Kaufland Global Marketplace opens nine European countries - DE, AT, CZ, SK, PL, FR, IT, ES and NL. Here is who can sell, how the EAN-matching listing model works, what the fees and fulfilment options are, and how to connect your Shopify store with Feedyio (there is no native Shopify channel).
Read article→Which review badge matters in each CEE country (CZ, SK, HU, RO, BG)
Expanding across Central and Eastern Europe means a different comparison site and a different trust badge in almost every market. This is the practical cheat sheet: Heureka and Zboží.cz in Czechia, Heureka in Slovakia, Árukereső in Hungary, Compari in Romania, Pazaruvaj in Bulgaria - what each badge is called, the threshold to earn it, and how Feedyio feeds them all from one Shopify store.
Read article→Compari.ro "Magazin de încredere": the Romanian trusted-shop program
Compari.ro is one of Romania's most-visited price-comparison sites and the Romanian sibling of Árukereső and Pazaruvaj in the Heureka Group. Its "Magazin de încredere" badge is a free verified-review program with clear blue and green levels. Here's what the badge means, the rating threshold, how reviews are gathered, what you need to enroll, and how Feedyio prepares your Compari.ro feed on Shopify.
Read article→FAVI Extra: free reviews and better catalog placement for home & furniture shops
FAVI Extra is FAVI's free review-collection service for furniture and home shops, and it does double duty: it gathers both product and shop reviews, and those reviews help move you up the catalog. Here's what it collects, why the review timing is tied to your delivery estimate, the three ways to implement tracking, and how to set it up on Shopify with Feedyio.
Read article→GLAMI reviews and the "TOP E-shop" badge: a fashion seller’s guide
GLAMI’s review tool is free, but it has real prerequisites most fashion shops skip - the consent pop-up and the DNS setup that lets survey emails send from your own domain. Get those right and you collect product and shop reviews and earn the "TOP E-shop" badge. Here’s how it works and how to set it up on Shopify.
Read article→GLAMI feed requirements: gender-first categories, sizes and image rules that get products live
GLAMI's feed is its own dialect - UPPERCASE fields, gender-first category paths, one ID per variant, strict images. Here are the exact requirements that get fashion products live with good placement, with examples of what passes and what gets rejected.
Read article→Google product category vs. product_type: how feed category mapping actually works
Two feed fields look almost the same but do very different jobs. One uses Google’s own taxonomy and decides which required attributes apply; the other is your own labelling for bidding and reporting. Here is when to set each, with examples.
Read article→Price and stock accuracy: why hourly feed sync keeps your account out of trouble
Stale price or stock data is not a cosmetic problem. When your feed says one thing and your product page says another, Google starts with warnings and can end with account suspension. Here is what "inaccurate price/availability" really means, why sales and fast-moving stock break feeds, and how a frequent feed refresh keeps your numbers matching everywhere.
Read article→How to start selling on eMAG (Romania, Bulgaria, Hungary) from Shopify
eMAG Marketplace puts your products in front of shoppers across Romania, Bulgaria and Hungary from a single platform, with commission-only pricing and no monthly fee. Here is who can sell, how the EAN-based catalogue works, how the fees and Fulfilment by eMAG (FBE) fit together, and how Feedyio generates the product feed you connect inside eMAG's own seller portal.
Read article→Heureka vs. Zboží.cz: which Czech comparison site should you prioritize?
Czechia is unusual in having two comparison sites worth feeding. With a limited budget you can’t always do both at full tilt, so the real question isn’t "which is better" - it’s "which first, and why". Here’s an honest comparison of reach, audience, trust mechanics, reviews, conversion tracking and CPC, plus a practical recommendation for a Shopify merchant.
Read article→A Shopify merchant's guide to going cross-border in CEE: feeds, currencies and trust badges
You sell well in one CEE market and want the rest of the region. The hard part is not the product - it is the per-country channels, currencies, languages and trust badges. Here is the playbook: set up Shopify Markets right, build a feed per market, pick the right comparison site and marketplace in each country, and earn the local trust badge that shoppers look for.
Read article→20 Common Product Feed Mistakes - and How to Fix Them
A small XML error can silently get your products rejected on Google, Meta and marketplaces - and cost you sales. Here are the 20 most common product feed mistakes, each with the wrong example, the corrected fix, and why it matters.
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