Unlock PDF and Add Watermark to PDF for iPhone Gratuito

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Upload your document in seconds
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Fill out, edit, or eSign your PDF hassle-free
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Download, export, or share your edited file instantly
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Users Most Likely To Recommend - Summer 2025
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Every PDF tool you need to get documents
done paper-free

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Create & edit PDFs

Generate new PDFs from scratch or transform existing documents into reusable templates. Type anywhere on a PDF, rewrite original PDF content, insert images or graphics, redact sensitive details, and highlight important information using an intuitive online editor.
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Fill out & sign PDF forms

Say goodbye to error-prone manual hassles. Complete any PDF document electronically – even while on the go. Pre-fill multiple PDFs simultaneously or extract responses from completed forms with ease.
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Organize & convert PDFs

Add, remove, or rearrange pages inside your PDFs in seconds. Create new documents by merging or splitting PDFs. Instantly convert edited files to various formats when you download or export them.
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Collect data and approvals

Transform static documents into interactive fillable forms by dragging and dropping various types of fillable fields on your PDFs. Publish these forms on websites or share them via a direct link to capture data, collect signatures, and request payments.
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Export documents with ease

Share, email, print, fax, or download edited documents in just a few clicks. Quickly export and import documents from popular cloud storage services like Google Drive, Box, and Dropbox.
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Store documents safely

Store an unlimited number of documents and templates securely in the cloud and access them from any location or device. Add an extra level of protection to documents by locking them with a password, placing them in encrypted folders, or requesting user authentication.

Customer trust by the numbers

64M+
users worldwide
4.6/5
average user rating
4M
PDFs edited per month
9 min
average to create and edit a PDF
Join 64+ million people using paperless workflows to drive productivity and cut costs

Why choose our PDF solution?

Cloud-native PDF editor

Access powerful PDF tools, as well as your documents and templates, from anywhere. No installation needed.

Top-rated for ease of use

Create, edit, and fill out PDF documents faster with an intuitive UI that only takes minutes to master.

Industry-leading customer service

Enjoy peace of mind with an award-winning customer support team always within reach.

What our customers say about pdfFiller

See for yourself by reading reviews on the most popular resources:
I have difficulties to send to sign to 2 people at the same time. I follow instructions but it does not work. The rest is good, specially on line help is good! Thank you
Lara
2016-09-22
I have found the PDF filler to be very useful in completing some legal documentation needed. It was easy to use and the final results were professional.
Anne M
2017-05-01
I do a lot of my work on a chromebook. This PDF Filler lets me do a lot of things that I've only ever been able to do on my desktop. I'm very pleased to have this capability become web-based
Chris L
2019-09-15
Payroll Manager needs whatever help she can get it saves me time! I love it! I can download any PDF and make it fillable! it makes my job so much easier! it makes W2-C's so easy! it is sometimes confusing when saving a PDF.
ANN C.
2019-05-16
Time saver! I have used PDFfiller for several months now and love it. It is a great tool which makes it extremely easy for me to quickly and efficiently fill out PDFs and return them to the sender. Wether it be filling out forms or signing a contract, it has saved me many many hours in the long run - and is a pleasure to use! There aren't really any cons to this plugin - it does exactly what it says it will do. However the user interface could be improved
James C.
2018-11-06
Best prices This app save my tim. It is the cheapest option of all. Pdfiller is very suitable. It is good for filling, sending, signing. Good support and reliable system. Sometimes after the updates, it stops working as usual. Some time is needed for waiting for patches.
Olivia D.
2018-01-15
Certainly recommend Very user friendly. Easy to find tools to edit, merge, etc. Was impressed that there was esign that is verified by the program. I am stil on the trial version, but I think I will continue with the paid version too as I do alot of editing to pdfs.
Bassant Boraei
2024-07-23
Adapting from working home, I needed to make forms fillable to get signatures and this service was exactly what I needed! Even after I forgot to cancel my subscription after the free trial, their customer support was auper responsive and able to refund the autopayment. Thank you!
Julien D
2020-06-26
They were super helpful to me when I… They were super helpful to me when I accidentally subscribed. They voided the transaction and were understanding. I really appreciate this because there are too many other automatic subscriptions that would not have been as forgiving.
Isabel McLain
2020-05-04

Unlock PDF and Add Watermark to PDF for iPhone

Managing your PDF files on your iPhone has become easier with our Unlock PDF and Add Watermark feature. This tool allows you to access your locked documents and protect your own creations effortlessly.

Key Features

Easily unlock password-protected PDF files
Add custom watermarks to your PDF documents
User-friendly interface for quick navigation
Support for various PDF formats
Compatible with all iPhone models

Use Cases and Benefits

Access important documents without hassle
Secure your original work with personalized watermarks
Maintain professionalism in document sharing
Protect sensitive information from unauthorized use
Enhance brand visibility through branded watermarks

This feature effectively solves your problem of locked PDF files and unprotected documents. You gain access to essential information while ensuring your own files remain safeguarded. With just a few taps, you can unlock PDFs and add watermarks to showcase your creativity, reassuring you that your work is both accessible and secure.

Get documents done
from anywhere

Create, edit, and share PDFs even on the go. The pdfFiller app equips you with every tool you need to manage documents on your mobile device. Try it now on iOS or Android!

For pdfFiller’s FAQs

Below is a list of the most common customer questions. If you can’t find an answer to your question, please don’t hesitate to reach out to us.
What if I have more questions?
Contact Support
loved- PDF Editor. loved is a full-fledged PDF editor that lets you add watermark to PDF documents. Dodo PDF Reader & Editor. PDF Utility.
Launch Visual Watermark. Click Select Images or drag your photos into the app. Select one or more images you would like to watermark. Click Next Step. Choose To add logo. Edit logo watermark using editing tools.
Tap on Photos to choose the image you want to add the watermark to. If you don't immediately see the picture you need, just tap on the Browse Folders option to see all your files. To add a particular text as a watermark, tap on the T at the top-right.
Steps to Add Watermark to PDF File Step 1: Run PDF Watermark Tool and add PDF files to the tool, click Next. Step 2: Choose a watermark type and do all the necessary settings. Step 3: Click on Preview to see the view of the PDF page before generating. Step 4: Click on Generate to add watermark to protected PDF file.
Find the PDF file in the Files or other app where the PDF file is saved, select it, tap the action menu, then choose Open in Documents. You will then be prompted to type in the password in order to open it. Once the PDF file is opened in the Documents app, tap the Menu button, then choose Change Password.
Open the OneDrive for Android app, and open the PDF you want to mark up. Near the bottom of your screen, tap Markup. On the Markup toolbar (from left to right: Exit, Undo, Redo, Navigate, Pen, Highlight, Note, Text, and Erase), tap the tool that you want to use.

How to Unlock PDF and Add Watermark to PDF for iPhone - video instructions

#1 usability according to G2

Try the PDF solution that respects your time.
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025