# Blog

- [Static image vs video ads: which works when?](https://www.performetic.com/en/blog/static-image-vs-video-ads): When static image ads win, when video wins, a decision table by product type and funnel stage, platform requirements and a test plan that compares formats fairly.
- [E-invoice and e-archive rules for ecommerce in Turkey](https://www.performetic.com/en/blog/e-invoice-e-archive-invoice-turkey-ecommerce): Thresholds, transition deadlines, the 2026 e-archive change and the mandatory fields on online sale invoices for brands selling online in Turkey, based on Tax Procedure General Communiqué No. 509.
- [How to use web push notifications for ecommerce](https://www.performetic.com/en/blog/web-push-notifications-for-ecommerce): What web push notifications are, when to ask for permission, how they work on iPhone and which ecommerce use cases actually drive sales, with tips to protect opt-in rates.
- [What is incrementality testing and how do you run it?](https://www.performetic.com/en/blog/incrementality-testing-guide): How to measure whether your ads really create extra sales using controlled tests, covering Meta and Google lift studies and geo tests with ecommerce examples.
- [Traffic dropped after a Google core update: what now?](https://www.performetic.com/en/blog/google-core-update-traffic-drop-recovery): A step-by-step guide to diagnosing an organic traffic drop after a core update, separating the real cause and building a durable recovery plan.
- [Pricing psychology and discount display for ecommerce](https://www.performetic.com/en/blog/ecommerce-pricing-psychology): Strikethrough prices, percent versus amount off, installment display and free shipping framing: how to manage perceived value without changing the price.
- [How to set up an affiliate program for your online store](https://www.performetic.com/en/blog/how-to-start-ecommerce-affiliate-program): Set commission rates from your margin, track with links and coupon codes, write program rules that stop brand bidding and coupon leakage, and handle disclosure and rel=sponsored.
- [Do YouTube ads drive sales for ecommerce?](https://www.performetic.com/en/blog/do-youtube-ads-drive-ecommerce-sales): Do YouTube ads bring direct sales or just awareness for an online store? The right formats, product feeds, measurement methods and realistic expectations.
- [How Meta attribution settings change your results](https://www.performetic.com/en/blog/meta-attribution-settings-explained): How the 7-day click, 1-day view and 1-day engage-through windows change reported sales and delivery, and which attribution setting to choose when.
- [How to manage ads when stock is low or running out](https://www.performetic.com/en/blog/managing-ads-when-stock-is-low): How to stop wasting ad spend on products that are about to sell out: days of cover, product-level controls in Google and Meta, and what to do at stock-out and restock.
- [AI ad creative for ecommerce: what works, what to watch](https://www.performetic.com/en/blog/ai-generated-ad-creative-ecommerce): Generative AI features in Meta and Google ad tools, safe ecommerce use cases, product accuracy risks, the Merchant Center metadata rule and disclosure requirements.
- [Right of withdrawal and returns for ecommerce in Turkey](https://www.performetic.com/en/blog/right-of-withdrawal-returns-turkey-ecommerce): When does the 14-day withdrawal period start, who pays return shipping, how fast must you refund and which products are exempt? An operations guide to Turkey's Distance Contracts Regulation.