Lock PDF and Compress PDF for Desktop For Free

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Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
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Discover the simplicity of processing PDFs online

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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
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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:
This is something of a category killer. I'm really glad I signed up for this service. It's great for the property rental market. The UX is a little basic and could use some help but it is functional. (Kevin Kell, UX Architect)
Kevin K
2017-03-19
Your customer service on documents that will not download for editing is outstanding. uick resolutioms so I can make the changes I need to make for success.
Mike T
2017-10-24
PDF Filler For me Im tech savvy, so I can quickly find my way around for the features that I need myself, however for others they may find it tedious to find the feature, maybe I feel that way because I went through google suites, I was also disappointed at the extremely low rating, however most people must complained that it was not free, which is not really a big issue, no software is totally free, they need to make money, so they will surely make some features available as trail, if you need more stuff then pay, 100%, I don't agree with the negative reviews., that's why I stuck around for the software. I love this software, actually it is one particular feature that is EXTREMELY attractive for me, which is the ability to make a form that is 1) fillable, 2) electronically signable, 3) that can be available via a link, 4) that can be placed on a website, 5) and best of all accessible only by secure login. All these features are amazing. Not so clear features however I'm tech savvy so I had no problem, others they may find it tedious to find needed features. I was also disappointed at the extremely low rating.
Yasir H.
2019-10-06
good enough but I am being billed $30… good enough but I am being billed $30 and $30 for this month October alone and I only have one license. Just me. I need this corrected immediately. Aaron McCartney (561)336-8012
Aaron McCartney
2022-10-19
Very well done product This is the best PDF modifying software I've ever used. I'm tempted to pay post the trial, I've used it like 15x since the first time I made a simple change.
Dominic C.
2021-11-27
Totally satisfied with both product and customer service. I recently found out I was paying for two separate accts., and I contacted PDFFiller and they were able to straighten it out for me, I am very satisfied with both their product, and their customer service.
Joan Kraskey
2021-02-23
easy to upload signature I really like the option of uploading my signature and saving it, and using it over and over again from within the system (something that Docusign does not allow).
Jeffrey Brown
2020-12-23
i need to send this form to the IRS for my Covid 19 stimaulu check can be appproved cause id filled Identity Theft I had to do 14039 Affidavit form now i need away to send email it or something have know way of printing out dont have access to a printer.
IRS.gov
2020-05-05
This tool is simple to use This tool is simple to use, it is useful for my job, PFD filler offer me the opportunity to organized documents for the company.
kettydiazpalacios
2025-03-24

Lock PDF and Compress PDF for Desktop

Secure and streamline your PDF documents with the Lock PDF and Compress PDF features for Desktop. These tools provide a simple way to protect your sensitive information and optimize file sizes, making it easier to manage your documents.

Key Features

Easily lock PDF files to prevent unauthorized access
Compress PDFs to reduce file size without sacrificing quality
User-friendly interface for quick processing
Support for various PDF formats
Fast and reliable performance

Potential Use Cases and Benefits

Protect confidential business documents by locking them
Share large PDF files effortlessly by compressing them
Prepare documents for presentations or email with reduced file sizes
Ensure important contracts maintain their integrity during sharing

By using the Lock PDF and Compress PDF features, you can address your document security and size challenges. Locking your PDF files gives you peace of mind by restricting access to authorized users only. Compressing files allows for easy sharing, ensuring your documents arrive intact and accessible. With these tools, you can manage your PDFs efficiently while keeping them 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
Open the PDF and choose Tools > Protect > Encrypt > Encrypt with Password. If you receive a prompt, click Yes to change the security. Select Require a Password to Open the Document, then type the password in the corresponding field.
First, open your file in Preview by selecting the file in Finder, hitting Space, and then clicking the Open with Preview button. In Preview, head to File > Export. In the export window, select the Reduce File Size option from the Quartz-Filter drop-down menu and then click the Save button.
Click the “Tool”>”Optimize PDF”. Here, you can choose three options for how to make a PDF smaller to email. Choose between Low, medium, and high compression.
Open the document with pages you want to resize by cropping, and click the Page Thumbnails tab. Resize the panel's width and thumbnail size as needed. To check a page's size, click the thumbnail to display the page.

#1 usability according to G2

Try the PDF solution that respects your time.
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