# ProductPinion > Index of the ProductPinion documentation. ## ProductPinion - [How it works](https://docs.productpinion.com/getting-started/introduction.md): Know what to test next β€” real shoppers, real opinions, and a library of proven tests for your Amazon listing. Pick a question, run it past a few hundred shoppers, and stop guessing. - [What ProductPinion Does](https://docs.productpinion.com/getting-started/what-productpinion-does.md): Learn how ProductPinion helps Amazon sellers test listing decisions with real shoppers, understand why they choose, and act before buying traffic. - [Your First Test](https://docs.productpinion.com/getting-started/your-first-test.md): Run your first Popular Pick Test in ProductPinion to discover which Amazon listing wins the click, why shoppers choose it, and what to test next. - [Credits and Plans](https://docs.productpinion.com/getting-started/credits.md): Learn how ProductPinion credits work, estimate shopper responses for your tests, and use your own audience to collect free responses. - [All Tests](https://docs.productpinion.com/test-library/all-tests.md): Browse Amazon listing tests by symptom, compare impact and questions, then launch the right test in ProductPinion with a pre-filled wizard. - [Tilted Image Test](https://docs.productpinion.com/test-library/tilted-image-test.md): Test whether a tilted main image attracts more shoppers without hiding the product details they need to identify and evaluate it. - [Human Element Test](https://docs.productpinion.com/test-library/human-element-test.md): Test whether adding a person to your Amazon main image improves product understanding, perceived scale, and shopper purchase preference. - [Popular Pick Test](https://docs.productpinion.com/test-library/popular-pick-test.md): Discover which competitor earns the most shopper interest, identify the reasons behind their appeal, and improve your own main product image. - [Back Packaging Test](https://docs.productpinion.com/test-library/back-packaging-test.md): Test whether showing retail-ready packaging in your Amazon main image increases shopper trust, clarifies quantity, and improves purchase intent. - [Keyphrase Test](https://docs.productpinion.com/test-library/keyphrase-test.md): Find the phrase that makes your Amazon main image stand out in search results, then validate whether it earns attention without losing shopper trust. - [Open Package Test](https://docs.productpinion.com/test-library/open-package-test.md): Learn when an opened package image reduces shopper uncertainty, how to spot an β€œis it used?” reaction, and what test to run next. - [Sequenced Benefit Test](https://docs.productpinion.com/test-library/sequenced-benefit-test.md): Compare numbered benefit infographics with Amazon shoppers, identify the claim that lands, and carry the winning sequence into your listing. - [Sunspot Packaging Test](https://docs.productpinion.com/test-library/sunspot-packaging-test.md): Compare darker package designs against Amazon's white space, interpret shopper feedback, and decide when to rerun the test as a Search Simulation. - [Emoji Bullet Test](https://docs.productpinion.com/test-library/emoji-bullet-test.md): Test whether adding emojis to your Amazon bullet points earns more shopper preference or makes your listing look unprofessional. - [Benefit Bingo Test](https://docs.productpinion.com/test-library/benefit-bingo-test.md): Find out which of your benefits matters most to shoppers, steal their language, and cut the benefits nobody picks. - [Perfect Insert Test](https://docs.productpinion.com/test-library/perfect-insert-test.md): Test which packaging insert offer drives the most sign-ups, catch suspicion before it kills conversion, and choose between free products and discounts. - [Page Content Test](https://docs.productpinion.com/test-library/page-content-test.md): Test which A+ content variation shoppers prefer, find the unanswered questions that cost you sales, and know when to stop optimising below the fold. - [Speed Bump Title Test](https://docs.productpinion.com/test-library/speed-bump-title-test.md): Find the unusual word that stops shoppers from scrolling past your title, test whether it costs you clarity, and carry the winner into your image too. - [Shorter Title Test](https://docs.productpinion.com/test-library/shorter-title-test.md): Test whether a title under 100 characters outperforms your current one, find the terms that earn their place, and free up space for what matters. - [Brand Name Test](https://docs.productpinion.com/test-library/brand-name-test.md): Test which brand name shoppers prefer, catch pronunciation traps and unintended associations, and know when to decide on trademark and domain instead. - [Golden Guarantee Test](https://docs.productpinion.com/test-library/golden-guarantee-test.md): Test which guarantee offer and name shoppers prefer, find the credibility ceiling, and discover which specific fear is blocking purchase in your category. - [Coupon vs. Sale Test](https://docs.productpinion.com/test-library/coupon-vs-sale-test.md): Test whether a coupon badge or a sale price wins more shoppers, find the framing that signals value without triggering quality doubts, and act at zero production cost. - [Competitor Research Test](https://docs.productpinion.com/test-library/competitor-research-test.md): Watch shoppers browse your Amazon search results on video, transcribe the exact language they use about your category, and convert what you hear into your next test. - [Objection Test](https://docs.productpinion.com/test-library/objection-test.md): Watch shoppers browse your Amazon listing on video, collect the objections that stop them buying, and turn the top recurring ones into a prioritised testing roadmap. - [Listing Optimization Test](https://docs.productpinion.com/test-library/listing-optimization-test.md): Watch shoppers review your full Amazon listing on video, sort their feedback into images, copy and offer, and build a prioritised backlog of what to test next. - [Product Development](https://docs.productpinion.com/test-library/product-development.md): Validate your product idea with real shoppers before you go to market, uncover issues early, and learn who your actual buyer is. - [Choosing a Test Type](https://docs.productpinion.com/tests/choosing-a-test-type.md): Understand when to use Pinion Polls, Pinion Ask, and Pinion Videos, and follow the usual Video-to-Poll sequence to find and fix listing problems. - [Pinion Polls](https://docs.productpinion.com/tests/pinion-polls.md): Show shoppers your listing options, get a vote plus a written reason from each shopper, and act on the explanations, not just the pie chart. - [Pinion Ask](https://docs.productpinion.com/tests/pinion-ask.md): Ask shoppers open-ended and structured survey questions about your product or listing, including pricing, comprehension, first impressions, and recall. - [Pinion Videos](https://docs.productpinion.com/tests/pinion-videos.md): Get screen recordings of shoppers narrating their thinking as they browse your listing, surface objections you didn't know you had, and turn them into Polls. - [Choosing Who Sees Your Test](https://docs.productpinion.com/audiences/choosing-who-sees-your-test.md): Learn when to narrow your test audience, how to save reusable targeting setups, and when custom audiences with screening questions make sense. - [Reading Your Results](https://docs.productpinion.com/results/reading-your-results.md): Understand votes, shopper explanations, certainty figures, and audience breakdowns, then filter noise, use AI tools, and share results.