Bluetooth Thermal Printer is a free Android app developed by NDTECH DIGITAL INDIA. It is a convenient Bluetooth printer app that enables you to print from your Android device to any Bluetooth thermal printer. Whether you want to print simple text or complex formats, this app makes it easy to print anything from your phone.

The app allows you to add printing data, including text with different formats like normal, bold, underline, Double Height, Double Width, Double Width + Double Height, Small font, etc. You can also set alignment, encoding, and add text in tabular format. Moreover, it allows you to add an image of any size and format, set alignment, and print it automatically with supported sizes on your printer. You can even add horizontal lines, left and right-aligned texts, barcodes, QR codes, notepads, PDFs, CSV files, and multilingual text (in UTF format) to print data in almost any language.

The app also provides a preview option before printing, so you can see how your data will look on paper. Note that sometimes the text may appear improper in the app, but it prints well on the printer. Additionally, the app supports any size printer; you just need to set your printer's supported page size, and the app will adjust the print accordingly.