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Pressmark

Design and print labels from your desktop or browser.

GitHubUpstream: NiimBlue

About

Pressmark is a label designer and printer client. It works completely offline in the browser, stores labels locally, shows a print preview with several post-processing options, and prints over Bluetooth or USB.

It also ships as standalone apps for desktop (Electron), Android (Capacitor) and Windows (Tauri). It is based on the open-source NiimBlue project and its NIIMBOT protocol library, and is MIT licensed.

What it does

Private and offline

The app works completely in the browser and stores labels there. It sends nothing except downloading the app files.

Bluetooth and USB

Connect a NIIMBOT printer either way.

A real label editor

Design labels, save, import and export them, and check a print preview with several post-processing options such as threshold and dithering.

Batch and templates

Print many labels from a table of data with variables, and use date templates in label text.

Runs everywhere

Browser, desktop (Electron), Android (Capacitor) and Windows (Tauri, Edge-backed).

The NIIMBOT protocol

It uses NiimBlueLib for printer communication, a very complete implementation of the protocol.

The Pitch

Labels without the account

Design a label, preview how it will print, and print it. No sign-in and no data leaves the browser.

Gallery

Saving and loading labels in browser storage
Saving and loading labels in browser storageScreenshot from the repository
Date templates in label text
Date templates in label textScreenshot from the repository
Label size, density and layout settings
Label size, density and layout settingsScreenshot from the repository

Progress

Browser editor and printingWorking
Desktop, Android and Windows appsIncluded

At a glance

Platforms
Browser, desktop, Android, Windows
Printers
NIIMBOT, over Bluetooth or USB
Licence
MIT
Based on
NiimBlue

Role

Maintainer. A NiimBlue-based fork, adapted and rebranded.