Can I increase the receipt font size? And change the paper size?

Can I increase the receipt font size? And change the paper size?

Yes, Jarbas allows you to adjust the font size of your receipts and choose the paper size for the PDF version. These options help you create receipts that are easier to read and better formatted for your type of printer.

1. How to increase or decrease the receipt font size

  1. On the home screen, tap Settings.
  2. Tap My Receipt.
  3. Tap Font Size.
  4. Move the slider:
    • Right → makes the text larger
    • Left → makes the text smaller



Important

The font size affects all types of receipts in Jarbas:

  • The image receipt (the one shown in the app and shared through the Share button)
  • The PDF receipt (generated using the PDF button)
  • The printed receipt (printed through a thermal printer connected to Jarbas or printed via a PDF on a regular printer)

So, if you increase the font size, all receipt formats will display a larger font.

2. How to change the PDF paper size

  1. On the home screen, tap Settings.
  2. Tap My Receipt.
  3. Tap PDF Page Format.
  4. Select the desired width, such as 80 mm or 50 mm.



Important

The PDF Page Format setting affects only the PDF receipt. It does not affect the image receipt or receipts printed directly on a paired thermal printer.

3. Important note about thermal printers and computer printing

Some users have thermal printers that are not compatible with Jarbas, so they print receipts through a computer instead.

Here’s what typically happens:

  1. Jarbas generates the PDF with the correct width (80 mm or 50 mm), based on your PDF Page Format setting.
  2. But the actual printing is done by Windows (or another operating system).
  3. If your printer is configured with a fixed paper length, Windows may add a blank space at the bottom of the receipt to match that length.

This happens because the system is trying to print on a fixed-size page, not on a continuous roll, which thermal printers use.

How to fix this

Adjust your printer settings on Windows (or your operating system):

  • Open your printer settings
  • Check the page size configuration
  • Change it to a roll format, matching the width (80 mm or 50 mm)
  • Make sure the page length is not fixed

This prevents blank spaces and ensures your receipt prints correctly.


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