Open sample receipts and folded letters
Android Chrome 138+ and Chromebook: pair the printer in system Bluetooth settings, then choose Bluetooth Serial. Close other printer connections first. BLE currently has an unresolved paper-feed issue; use the linked receipt tool for a feed-only test.
Initializing…
Keep this page visible while printing. The test records timing while sending, then prints the measurements underneath. Save PNG captures the receipt shown here. Printed timings cover the main image; the diagnostic footer is measured separately on screen.Initializing…20261016-ble3 · Static browser files; no printing server. Completion means the browser submitted the bytes; check the physical receipt for missing pixels.