• Go to Settings
  • Click on  My businesses 
  • Click on the name of the company you'd like to edit
  • Find buttons to upload images with your logo and signature at the bottom

The size of your logo on the invoice depends on the picture's size and dimensions.
A picture should be saved in JPG or PNG format.
The max. size of an image is 2MB.
The best resolution for a logo is 600x400px. Images with another resolution or proportions will stretched to fit the invoice. Billdu will try to accommodate your image to your invoices automatically.


  • Select Settings and My businesses
  • Select the name of the company you'd like to edit
  • Your company details appear
  • Scroll to the bottom and click on Logo  
  • Select Insert image from camera roll
  • Choose an image. On iOS devices you can now crop and rotate the image
  • Click Done
  • A preview of the invoice with your logo appears. You can delete the logo or go Back
  • On the bottom of the list click on Signature 
  • Tap on Insert image or Sign by finger. You can now choose an image or create a signature right in the app
  • A preview of the invoice with your signature appears. You can delete the signature or go Back
  • Click Done
  • You can now Save the business settings 

Note: Changes in business settings will take effect on next invoices you create. It won't effect invoices created previously.

Take a look here to learn more about how you can choose your own template, invoice color and details which will be displayed on the invoice. You can also pre-set texts and dates and alter document names.  

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