Observed arrival · 2026-09-30

A thermal printer, reached from the browser

openthermalprint.site Visit website

Editorial interest 73/100 Selection signal · not a rating of the site

A browser-based tool for composing and printing text or images to a thermal printer over Bluetooth LE or serial.

Landing page captured for the 2026-09-30 issue.

For: People printing text or images on thermal printers
Worth noticing: Image controls include brightness, a threshold setting, dithering for photos, and invert; the page also offers Bluetooth LE and serial connections.

Field notes

The page offers separate text and image workflows, with controls for alignment, bolding, image placement, brightness, threshold, dithering, and inversion. It provides both Bluetooth LE and serial connection options, but names no supported printer models. The site describes itself as unofficial, advises use at the visitor’s own risk, and says print data stays in the browser.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

◎NicheUnusually specific use

One card from the complete issue

Ask the Descendants

390,826 arrived 1,000 judged 983 catalogued Enter the complete issue