Convert PNG to PDF and Lock PDF for Tablet Gratis

Drop document here to upload
Select from device
Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
Note: Integration described on this webpage may temporarily not be available.
0
Forms filled
0
Forms signed
0
Forms sent
Laatst bijgewerkt op Jan 16, 2026

Try these PDF tools

Edit PDF
Quickly edit and annotate PDFs online.
Sign
eSign documents from anywhere.
Request signatures
Send a document for eSignature.
Share
Instantly send PDFs for review and editing.
Merge
Combine multiple PDFs into one.
Rearrange
Rearrange pages in a PDF document.
Compress
Compress PDFs to reduce their size.
Convert
Convert PDFs into Word, Excel, JPG, or PPT files and vice versa.
Create from scratch
Start with a blank page.
Edit DOC
Edit Word documents.

Edit, manage, and save documents in your preferred format

Card illustration

Convert documents with ease

Convert text documents (.docx), spreadsheets (.xlsx), images (.jpeg), and presentations (.pptx) into editable PDFs (.pdf) and vice versa.
Card illustration

Start with any popular format

You can upload documents in PDF, DOC/DOCX, RTF, JPEG, PNG, and TXT formats and start editing them immediately or convert them to other formats.
Card illustration

Store converted documents anywhere

Select the necessary format and download your file to your device or export it to your cloud storage. pdfFiller supports Google Drive, Box, Dropbox, and OneDrive.
Card illustration

Convert documents in batches

Bundle multiple documents into a single package and convert them all in one go—no need to process files individually.
Card illustration

Preview and manage pages

Review the documents you are about to convert and exclude the pages you don’t need. This way, you can compress your files without losing quality.
Card illustration

Protect converted documents

Safeguard your sensitive information while converting documents. Set up a password and lock your document to prevent unauthorized access.

How to quickly convert and compress your PDF?

Upload your document

Upload a document from your device, cloud storage, email, or URL.
Screenshot

Use the converter tool

Select your document and click Convert .
Screenshot

Select format and destination

Decide on the file type and where you want to save the converted document—on your device or in your cloud storage.
Screenshot

Manage pages and additional settings

Once everything is set, you can access advanced settings to compress a document by excluding unnecessary pages, set passwords, and select other options.
Screenshot
Screenshot
Screenshot
Screenshot
Screenshot
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
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

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 AM STILL NEW TO THIS BUT I AM FINDING… I AM STILL NEW TO THIS BUT I AM FINDING VERY HELPFUL AND RESOURCEFUL FOR MY BUSINESS AND FOR PERSONAL USE.
Jonathan Lippin
2021-10-25
Took some time to get used to it's… Took some time to get used to it's quirks after years of using Adobe Acrobat. But, I have actually found it easier to use and can do more .
K. McCarthy
2021-01-19

Convert PNG to PDF and Lock PDF for Tablet

Transform your images effortlessly with our Convert PNG to PDF and Lock PDF feature. This tool provides a smooth and secure way to handle your documents, making it easy for you to manage and share your files.

Key Features

Quick conversion of PNG images to PDF format
Option to lock PDFs to protect your content
User-friendly interface for easy navigation
Compatible with various tablet devices
Supports batch processing for multiple files

Potential Use Cases and Benefits

Create professional presentations by converting images to PDFs
Secure sensitive information with password protection on your PDFs
Share documents confidently without risking unauthorized access
Organize diverse files in a single PDF for streamlined access
Enhance collaboration in workplaces with easy-to-share documents

This feature addresses your needs by providing a reliable and straightforward solution for managing images and documents. By converting PNG files to PDF, you ensure high-quality outputs that are easy to share and view. Additionally, locking PDFs helps you maintain control over your content, keeping it safe from unwanted changes or access. Take charge of your digital files, and enjoy a hassle-free experience.

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
Go to the Image to PDF converter. Upload your image. We accept PNG, as well as GIF, TIFF, BMP, and JPG. Then click 'Create PDF Now'.
Go to the photo gallery of your Android phone, tick on every photo you want to convert to PDF. You can choose one or multiple photos. Step 2. Click on the dots to open a menu, and tap on “Print”.
PNG images are ideal for web graphics, especially logos, illustrations, and graphs. They can shrink to very small file sizes when colors and elements are limited, which is another plus. PDFs keep your images in one packet, so viewers can print and save designs and booklets easily.
Choose “image”-”PNG format” option. Then click on “convert” button and conversion will be performed in software. Once, PDF conversion is completed, PNG files will be saved to the destination folder with a transparent background that can be reviewed later.
Download Photos PDF: Scanner Converter from the App Store. Open the app and tap the camera roll. Now, select the image that you'd like to convert > tap Select. On the next page, enter the name of the PDF file. After the PDF document is created, select it > tap Share > select Save to Files.

How to Convert PNG to PDF and Lock PDF for Tablet - 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