Frequently asked questions
Quick answers about Kiwi PDF on iPhone, iPad and Android.
General
Is Kiwi PDF free?
Yes, you can download Kiwi PDF for free on the App Store and Google Play.
Which devices does Kiwi PDF run on?
Kiwi PDF is available now for iPhone & iPad (iOS / iPadOS 16 or later) and Android (Android 8.0 or later). Versions for Mac, Windows and the web are coming soon.
Are my documents uploaded to a server?
No. Kiwi PDF opens, edits and saves your files on your device. Your documents only leave the device when you choose to share or export them.
Can I change the app language or switch to dark mode?
Yes. Open Settings in Kiwi PDF to choose Light, Dark or System appearance. The app follows your device language. Kiwi PDF is available in English, Vietnamese, Spanish, Hindi, Indonesian, Portuguese (Brazil) and Thai.
Fill & Sign
How do I sign a PDF?
Open the PDF, choose the Fill & Sign group, tap Signature, draw your signature and tap Done. Then drag it into place.
Step-by-step guide for iPhone & iPad →
Step-by-step guide for Android →
Can I save my signature and reuse it?
Yes. Every signature you draw is kept under Saved signatures on the signature pad, so you can place it again with one tap.
Step-by-step guide for iPhone & iPad →
Step-by-step guide for Android →
Is my signature a legally binding digital signature?
Kiwi PDF adds a handwritten image signature. It is not a certificate-based digital signature. Check whether a handwritten signature is accepted for your document.
Step-by-step guide for iPhone & iPad →
Step-by-step guide for Android →
Annotations & editing
Will my annotations show up in other apps like Adobe Acrobat or Preview?
Yes. Kiwi PDF saves annotations as standard PDF annotations, so other PDF apps can display them and, in most cases, edit them too.
Do I need to press Save?
No. Your changes are saved automatically while you work. Use Undo and Redo in the editor to step back and forward through your changes.
Can I edit the existing text in a PDF?
Yes. Use Edit Text to tap a block of text and change it. To add a brand-new line of text, press and hold on an empty area.
PDF tools
How do I merge or split PDFs?
Open the Tools tab and choose Merge or Split. Pick your files, adjust the options and Kiwi PDF creates a new PDF without changing your originals.
How can I make a PDF smaller to send by email?
Use Compress in the Tools tab, or choose Reduce File Size from the ••• menu in the editor. Pick a compression level and Kiwi PDF shows the size before and after.
Security
How do I add a password to a PDF?
In the editor, open the Edit group and tap Password, or use Protect in the Tools tab. You will need the password every time you open the file.
I forgot the password of my PDF. Can you recover it?
No. Passwords are never stored or sent anywhere, so nobody, including us, can recover them. Keep a copy of the password somewhere safe.
Where can I report a problem?
Email us at support@kiwipdf.org with your device model, OS version and a short description of the problem.