Cardmarket Companion
A simple extension to prefill sell inputs
As of June 2026, Cardmarket Companion has 598 users and a 4.86/5 rating from 43 reviews in the Productivity category.
Usersup 48.8 percent+48.8%
598
598
Ratingno change0%
4.86
43 reviews
Reviewsup 2.4 percent+2.4%
43
Version
0.4.0
Manifest V3
90-day change · In the last 90 days this extension 3 version updates.
History
11 snapshotsTracking since Apr 1, 2026.
View as table
| Date | Users | Rating | Reviews | Version |
|---|---|---|---|---|
| Apr 1, 2026 | 402 | 4.86 | 42 | 0.2.0 |
| Apr 10, 2026 | 411 | 4.86 | 42 | 0.2.0 |
| Apr 20, 2026 | 455 | 4.86 | 42 | 0.3.0 |
| Apr 25, 2026 | 476 | 4.86 | 42 | 0.3.1 |
| May 2, 2026 | 480 | 4.86 | 42 | 0.3.1 |
| May 9, 2026 | 497 | 4.86 | 42 | 0.3.1 |
| May 14, 2026 | 526 | 4.86 | 42 | 0.3.1 |
| May 20, 2026 | 546 | 4.86 | 42 | 0.3.1 |
| May 26, 2026 | 568 | 4.86 | 42 | 0.3.1 |
| Jun 2, 2026 | 571 | 4.86 | 42 | 0.3.1 |
| Jun 8, 2026 | 597 | 4.86 | 42 | 0.3.1 |
| Now | 598 | 4.86 | 43 | 0.4.0 |
Changelog
- Apr 10, 2026description
Tired of painstakingly typing in item prices for your listings on your favorite online TCG marketplace? Introducing Cardmarket Companion, the unofficial Chrome extension designed exclusively for the Cardmarket community. Say goodbye to manual data entry and hello to effortless pricing! 🔥 New Features 🔥 ✅ Estimated Shipping Cost (Buyer Feature) See an estimated shipping price directly on listing pages — no need to add items to your basket just to discover the final cost. Compare offers faster and make better buying decisions. ✅ Customizable Interface Prefer a cleaner layout? You can now hide social media buttons from the interface in the extension settings to save space and reduce visual clutter. ✅ Pro Mode – Smart Competitive Pricing Stay competitive and maximize your profit margin by automatically pricing your cards below the first professional or power seller. Choose to undercut by a fixed amount or a percentage, fully adjustable to your strategy. ✅ Feedback & Contact Access Users can now easily share feedback or contact the developer directly from the extension, making it simpler to report issues, suggest improvements, or request new features. 🌟 Enhanced Features 🌟 ✅ Minimum price value Automatically fills with your set minimum price whenever the trend/first/average price is below it. ✅ Copy & Share Your List Not just for sellers! Now you can copy your list of cards and export it to share with friends, teammates, or trading partners. Perfect for coordinating trades, deck builds, or showing off your collection. ✅ Selectable Pricing Mode You can now choose whether to prefill with the first price or the average price, depending on your preferred filters — giving you more control over your pricing strategy. ✅ Update Notifications Never miss what’s new! Each time the extension updates, you’ll receive a brief notification explaining the latest improvements or added features. ✅ Enhanced Search View When browsing or searching, the small camera icon has been replaced with the actual card image, making it easier and faster to find the right card at a glance. ✅ Listing Summary Preview No more second-guessing! Before listing a card, you'll now see a summary panel showing exactly what you're about to list — including the card name, condition, selected price, and trend source — so you can catch mistakes before they happen. ✅ Live Listing Tracker Panel Keep tabs on your progress as you go. A handy little panel displays how many cards you've listed and the total value of your listings in real time. Great for staying organized and tracking your potential earnings! 📌 Core Functionality 📌 📈 Dynamic Price Prefilling: Automatically prefill your item prices with real-time trending data. Choose from trend data spanning 1, 7, or 30 days / first or average price to stay competitive in the marketplace. 🚀 Seller's Secret Weapon: Gain an edge over your competition by leveraging the latest pricing trends. Make informed pricing decisions that can lead to increased sales and profits. 🔒 Privacy First: Your sensitive pricing data remains private and secure. We never compromise on data protection. 🕵️ Unofficial Advantage: Built by sellers, for sellers. Enjoy the freedom to use Cardmarket Companion without constraints, empowering you to run your online business your way. 💡 Efficiency Boost: Save time by automating price inputs. Focus on growing your business while Cardmarket Companion handles the pricing details. ________________________________________________________ Feel free to support me by hitting the donation button 😁
Tired of painstakingly typing in item prices for your listings on your favorite online TCG marketplace? Introducing Cardmarket Companion, the unofficial Chrome extension designed exclusively for the Cardmarket community. Say goodbye to manual data entry and hello to effortless pricing! 🔥 New Features 🔥 ✅ Custom Message Signature You can now define a default message signature that will be automatically added to your messages. ✅ Default Comment Presets Set up a list of predefined comments and quickly apply them during your listing sessions; perfect for standard notes, conditions, or frequently used descriptions. ✅ Estimated Shipping Cost (Buyer Feature) See an estimated shipping price directly on listing pages — no need to add items to your basket just to discover the final cost. Compare offers faster and make better buying decisions. ✅ Customizable Interface Prefer a cleaner layout? You can now hide social media buttons from the interface in the extension settings to save space and reduce visual clutter. 🌟 Enhanced Features 🌟 ✅ Pro Mode – Smart Competitive Pricing Stay competitive and maximize your profit margin by automatically pricing your cards below the first professional or power seller. Choose to undercut by a fixed amount or a percentage, fully adjustable to your strategy. ✅ Feedback & Contact Access Users can now easily share feedback or contact the developer directly from the extension, making it simpler to report issues, suggest improvements, or request new features. ✅ Minimum price value Automatically fills with your set minimum price whenever the trend/first/average price is below it. ✅ Copy & Share Your List Not just for sellers! Now you can copy your list of cards and export it to share with friends, teammates, or trading partners. Perfect for coordinating trades, deck builds, or showing off your collection. ✅ Selectable Pricing Mode You can now choose whether to prefill with the first price or the average price, depending on your preferred filters — giving you more control over your pricing strategy. ✅ Update Notifications Never miss what’s new! Each time the extension updates, you’ll receive a brief notification explaining the latest improvements or added features. ✅ Enhanced Search View When browsing or searching, the small camera icon has been replaced with the actual card image, making it easier and faster to find the right card at a glance. ✅ Listing Summary Preview No more second-guessing! Before listing a card, you'll now see a summary panel showing exactly what you're about to list — including the card name, condition, selected price, and trend source — so you can catch mistakes before they happen. ✅ Live Listing Tracker Panel Keep tabs on your progress as you go. A handy little panel displays how many cards you've listed and the total value of your listings in real time. Great for staying organized and tracking your potential earnings! 📌 Core Functionality 📌 📈 Dynamic Price Prefilling: Automatically prefill your item prices with real-time trending data. Choose from trend data spanning 1, 7, or 30 days / first or average price to stay competitive in the marketplace. 🚀 Seller's Secret Weapon: Gain an edge over your competition by leveraging the latest pricing trends. Make informed pricing decisions that can lead to increased sales and profits. 🔒 Privacy First: Your sensitive pricing data remains private and secure. We never compromise on data protection. 🕵️ Unofficial Advantage: Built by sellers, for sellers. Enjoy the freedom to use Cardmarket Companion without constraints, empowering you to run your online business your way. 💡 Efficiency Boost: Save time by automating price inputs. Focus on growing your business while Cardmarket Companion handles the pricing details. ________________________________________________________ Feel free to support me by hitting the donation button 😁
Permissions & access
- Permissions
- storage
- Host access
- https://help.cardmarket.com/*, https://developers.buymeacoffee.com/*
Screenshots
About
Tired of painstakingly typing in item prices for your listings on your favorite online TCG marketplace? Introducing Cardmarket Companion, the unofficial Chrome extension designed exclusively for the Cardmarket community. Say goodbye to manual data entry and hello to effortless pricing! 🔥 New Features 🔥 ✅ Custom Message Signature You can now define a default message signature that will be automatically added to your messages. ✅ Default Comment Presets Set up a list of predefined comments and quickly apply them during your listing sessions; perfect for standard notes, conditions, or frequently used descriptions. ✅ Estimated Shipping Cost (Buyer Feature) See an estimated shipping price directly on listing pages — no need to add items to your basket just to discover the final cost. Compare offers faster and make better buying decisions. ✅ Customizable Interface Prefer a cleaner layout? You can now hide social media buttons from the interface in the extension settings to save space and reduce visual clutter. 🌟 Enhanced Features 🌟 ✅ Pro Mode – Smart Competitive Pricing Stay competitive and maximize your profit margin by automatically pricing your cards below the first professional or power seller. Choose to undercut by a fixed amount or a percentage, fully adjustable to your strategy. ✅ Feedback & Contact Access Users can now easily share feedback or contact the developer directly from the extension, making it simpler to report issues, suggest improvements, or request new features. ✅ Minimum price value Automatically fills with your set minimum price whenever the trend/first/average price is below it. ✅ Copy & Share Your List Not just for sellers! Now you can copy your list of cards and export it to share with friends, teammates, or trading partners. Perfect for coordinating trades, deck builds, or showing off your collection. ✅ Selectable Pricing Mode You can now choose whether to prefill with the first price or the average price, depending on your preferred filters — giving you more control over your pricing strategy. ✅ Update Notifications Never miss what’s new! Each time the extension updates, you’ll receive a brief notification explaining the latest improvements or added features. ✅ Enhanced Search View When browsing or searching, the small camera icon has been replaced with the actual card image, making it easier and faster to find the right card at a glance. ✅ Listing Summary Preview No more second-guessing! Before listing a card, you'll now see a summary panel showing exactly what you're about to list — including the card name, condition, selected price, and trend source — so you can catch mistakes before they happen. ✅ Live Listing Tracker Panel Keep tabs on your progress as you go. A handy little panel displays how many cards you've listed and the total value of your listings in real time. Great for staying organized and tracking your potential earnings! 📌 Core Functionality 📌 📈 Dynamic Price Prefilling: Automatically prefill your item prices with real-time trending data. Choose from trend data spanning 1, 7, or 30 days / first or average price to stay competitive in the marketplace. 🚀 Seller's Secret Weapon: Gain an edge over your competition by leveraging the latest pricing trends. Make informed pricing decisions that can lead to increased sales and profits. 🔒 Privacy First: Your sensitive pricing data remains private and secure. We never compromise on data protection. 🕵️ Unofficial Advantage: Built by sellers, for sellers. Enjoy the freedom to use Cardmarket Companion without constraints, empowering you to run your online business your way. 💡 Efficiency Boost: Save time by automating price inputs. Focus on growing your business while Cardmarket Companion handles the pricing details. ________________________________________________________ Feel free to support me by hitting the donation button 😁
Technical
- Version
- 0.4.0
- Manifest
- V3
- Size
- 35.39MiB
- Min Chrome
- 88
- Languages
- 1
- Featured
- No
Metadata
- ID
- mpbncolfefkegmaccdejhngjcjkjoaep
- Developer ID
- u727826a9bd16b0b8b8e310e42211a640
- Developer Email
- [email protected]
- Created
- Sep 11, 2023
- Last Updated (Store)
- Jun 3, 2026
- Last Scraped
- Jun 8, 2026
- Website
- cardmarket-companion.app
- Support URL
- —
- Privacy Policy
- —
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Data sourced from the Chrome Web Store · last verified Jun 8, 2026.