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Get shipping cost in seconds: live carrier rates for the product page you are on, with package size estimated for you. SMKlog Quick Quote — free shipping calculator for eBay, Craigslist, Amazon, Facebook Marketplace and hundreds of stores. See the shipping cost of any item right on the listing page: the extension estimates the box size and packed weight and shows live discounted USPS, UPS, and FedEx rates. No scale needed, no account needed to compare prices. New in 0.5.3: the seller's city on eBay is turned into an origin ZIP automatically. Buy the label online when you are ready — pay only for what you ship, no subscription. Open a product page, click the SMKlog extension, enter ZIP codes, package dimensions, weight, and shipment details. The extension checks whether the shipment can continue as a parcel quote or should be reviewed as freight, oversized, restricted, or international. Use it for: - Auto parts and motorcycle parts - Oversized parcels - Pallet and LTL review - Shipping protection decisions - Pickup and return questions The extension reads only the active tab after you click it. It does not collect passwords, cookies, payment cards, or full browsing history. Checkout and payment happen on smklog.com. Why does Chrome say "all sites"? People sell things everywhere — eBay, Facebook Marketplace, a forum thread, a shop nobody has heard of. To show a shipping price for the listing you are looking at, SMKlog has to be able to look at that listing wherever it is. That is the only reason for the permission. What we read: the product name, and the seller's city or ZIP when the listing shows one. What we send: only what you would have typed into the calculator yourself, plus usage counters that carry the shop's domain (ebay.com) — never the product, never the page address. What we never collect: your browsing history, page content, passwords or payment details. Nothing is sold or shared with advertisers. On a page that is not a listing the extension does nothing. Turn the badge off from its own ✕ menu, or set site access to "On click" in Chrome's extension settings.
Jul 27, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.