1
Open or scan
Choose an existing PDF or create a new one with the built-in scanner.
Everything you need to finish a PDF on your phone
Sign PDFs with your finger
Draw your signature, save it and place it precisely on any page.
Scan documents to PDF
Turn paper documents into clean PDFs using your phone camera.
Add text and date
Fill quick details, add today's date and resize everything before saving.
Recent documents
Reopen recently used or signed PDFs without searching through folders.
Save or share
Export the final PDF to your device or share it through Mail, WhatsApp, Drive and more.
Local privacy
Your files and signatures are processed on your device, with no required cloud upload.
From paper or PDF to signed file in seconds
2
Fill and sign
Add a signature, text or date exactly where you need it.
3
Save or share
Export the final PDF and send it through your preferred app.
Screenshots
Built for real documents you handle every day
Contracts and approvals
Sign documents from email without printing or opening your computer.
Simple forms
Add name, date, comments or short details directly onto the PDF.
Paper documents
Scan a page, turn it into a PDF and share it ready to send.
Download Firma PDF for free
Available for iPhone and Android. Open, scan, sign, fill and share PDFs without friction.
More ways to use Firma PDF
Sign PDF free from your phone
Sign PDF documents for free on iPhone and Android. Draw your signature, place it on the document and save or share the final PDF.
Scan documents to PDF
Scan paper documents, turn them into PDFs and add a signature, text or date before sharing.
Fill PDFs on your phone
Fill simple PDFs on iPhone and Android by adding text, date and signature before saving or sharing.
User Reviews
M
Maria G.
Finally an app that just works! I signed and sent an important document in under a minute. Clean, simple, and fast.
C
Carlos R.
Love it! Saving and reusing signatures makes my life so much easier. Highly recommended for professionals.
L
Laura P.
Super intuitive and easy to use. Signed a PDF from my email and shared it right away. Great for quick tasks.
A
Andrew L.
The best PDF signing app I’ve tried. No unnecessary permissions, no data tracking. 10/10 for privacy.
Frequently Asked Questions
Which devices are supported?
The app works on all mobile devices running iOS (iPhone) and Android.
Is signing PDFs free?
Yes. You can download the app for free and sign, save and share documents from your phone.
Can I scan documents to PDF?
Yes. The app includes a scanner to create PDFs from paper documents and continue editing them.
Can I add text or dates?
Yes. You can place text, dates and signatures on the PDF before exporting it.
Are my documents uploaded online?
No. Everything is processed locally. The app never uploads or shares your files or signatures.