LabelButler by ButlerStack

Extract shipping labels from Cardmarket and eBay, combine with stamps, and print.

Available on Firefox for Android™

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About this extension

LabelButler turns shipping data and rendered labels from Cardmarket, eBay, and DHL into print-ready shipping labels for thermal label printers in seconds.

Cardmarket — orders are read from the order website and the address is passed; LabelButler auto-selects the matching Internetmarke from the Stamp Depot and merges address and stamp into one printable label.

eBay & DHL — labels are captured via Snapshot Crop: the visible label region is cropped, scaled to the label medium, and opened as a printable label.

Stamp Depot — Internetmarke PDFs (Brother DK-22205 or Avery Zweckform 3490) are sliced into individual stamps, stored by shipping class, auto-matched on print, and marked as used storing the order number.

No accounts, no cloud — drafts and stamps stay local in your browser.

Developer comments

LabelButler produces printable shipping labels for Cardmarket, eBay, and DHL.

Cardmarket (DOM-PDF): reads order metadata from the page DOM and merges the address with a stamp from the local Stamp Depot (IndexedDB).
eBay (Snapshot Crop): screenshots the rendered label region, crops a fixed
region, and scales it to the label medium.
DHL (Snapshot Crop / picker): the user drops a DHL PDF and the extension
renders and crops it locally.

Sites: https://www.cardmarket.com/* (content script) and the enumerated eBay
regional domains (content scripts + host_permissions). DHL needs no site access.
No other site is accessed or modified.

Permissions: storage (settings/drafts/Stamp Depot), activeTab + scripting
(inject/capture on the source page only when the user triggers it), contextMenus
(toolbar context menu), tabs (detect the source site, open preview/settings
tabs), clipboardWrite (copy the cropped label), downloads (save labels/backups).

No remote code, no cross-origin fetch from the background worker, no data
collection or transmission — all data stays local in the browser.

Firefox for Android is best-effort: printing and the eBay Snapshot Crop capture
are desktop-only; Cardmarket, the DHL picker, the Stamp Depot, and PNG download
work on Android.

Rated 0 by 0 reviewers

Permissions and data

Required permissions:

Input data to the clipboard
Download files and read and modify the browser’s download history
Access browser tabs
Access your data for sites in the ebay.com domain
Access your data for sites in the ebay.de domain
Access your data for sites in the ebay.co.uk domain
Access your data for sites in the ebay.fr domain
Access your data for sites in the ebay.it domain
Access your data for sites in the ebay.es domain
Access your data for sites in the ebay.at domain
Access your data for sites in the ebay.ch domain
Access your data for sites in the ebay.nl domain
Access your data for sites in the ebay.be domain
Access your data for sites in the ebay.pl domain
Access your data for sites in the ebay.ie domain
Access your data for sites in the ebay.com.au domain
Access your data for sites in the ebay.ca domain
Access your data for www.cardmarket.com

Optional permissions:

Access your data for sites in the ebay.com domain
Access your data for sites in the ebay.de domain
Access your data for sites in the ebay.co.uk domain
Access your data for sites in the ebay.fr domain
Access your data for sites in the ebay.it domain
Access your data for sites in the ebay.es domain
Access your data for sites in the ebay.at domain
Access your data for sites in the ebay.ch domain
Access your data for sites in the ebay.nl domain
Access your data for sites in the ebay.be domain
Access your data for sites in the ebay.pl domain
Access your data for sites in the ebay.ie domain
Access your data for sites in the ebay.com.au domain
Access your data for sites in the ebay.ca domain

Data collection:

The developer says this extension doesn't require data collection.

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