Want to annotate, sign, upload and edit PDFs on the go? Lumin PDF lets you do all that in the free app. Developed by Nitrolabs, its core function is the ability to upload and edit PDF documents in the Cloud. All your updates will automatically sync within your Lumin account, so you can pick up where you left off if you switch to desktop.

Key features include:
- Edit & sign PDF documents
- Upload documents via Dropbox or Google Drive
- Annotate PDFs with lines, shapes and comments
- Highlight and underline text
- Share documents
- Documents are automatically saved in the Cloud

Terms & Conditions:

For more information on Lumin PDF, head to

What’s New

Version 1.3.27

- Update security issue

Ratings and Reviews

3.3 out of 5
135 Ratings

135 Ratings

meihawaii ,


This app has caused me so much frustration and tears. I’m using this on a mobile device and was hoping for an alternative to printing and filling out pages. Every time I try to save a PDF, my editing, gone. I only did a few sentences so I wouldn’t waste all my time just trying to figure it out. When I save the PDF, the preview just shows the page without any edits, and when I go to the Drive to see if it was just a preview issue, it wasn’t. I also can’t even use the “Open In” feature in Google Drive, I have to save my PDFs to Cloud in order to view them. Wish there were instructions, the website didn’t even help...

Developer Response ,

Hi meihawaii , We're sorry that you've experienced issues with this and know how important it is to be able to edit how and when you need to. If you're experiencing technical problems please email with more details so they can resolve your problem. If you'd like to check out all the editing features we offer, find out more here:

Freddie Summersi ,

Highly appreciate

I extremely like Lumin PDF for many reasons. The first one is because of saving time, the second one is easy to use and the last one is for the effective that it brings to me. Good suggestion for other users.

Developer Response ,

Hi Freddie, thank you for your feedback! We will pass your suggestion to the dev team. Alternatively, you can reach out our support team via email and share your suggestions with them.

needagoodpdfapp ,

Don’t recommend

The home screen when opening the app was blank. I couldn’t upload any docs from Dropbox , drive or my files. I couldn’t do anything at all besides attempt to sign out, upon which all the options to upload would come up behind the sign out menu. Even after trying multiple times, nothing ever uploaded.

What worries me is that I can’t sign out even when trying repeatedly. I don’t grant Lumin to keep me logged in because I don’t want any involuntary access given to any of my files but how can I be sure of this when I can’t even sign out?

I’ve used lumin on a pc before and it worked well enough. This app needs a lot of help.

Developer Response ,

Hi, we appreaciate your feedback on the matter. Lumin PDF implements role-based access control in an effort to make security our priority, so you will sometimes be asked for permission to access files. Accessing certain files is also dependent on who the creator is and whether they have shared it with your group. You can learn more about sharing here:

App Privacy

The developer, Nitrolabs Limited, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Identifiers

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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