Lock PDF and Compress PDF for Macbook Pro 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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Last updated on Sep 21, 2025

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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:
It's great! Only problem I had was trying to erase a hi-lited area I accidentally added. The software wanted me to pay for an upgrade for the eraser which I think is ridiculous guys. Other than that, awesome.
E Froerer
2016-12-23
Its good for the most part - the downside is it doesnt open for me on the first try and it asks me to sign in everytime i need to print or save a doc. even though I pay for the service. Annoying that it doesnt recognize me when I use the app.
sharon d
2017-10-04
What do you like best?
Simplified documents and signatures for RFP responses
What do you dislike?
If I could change one thing I wish I could save directly to my desktop
What problems are you solving with the product? What benefits have you realized?
No longer needing to waste time waiting on signatures!!
Jason LeBlanc
2019-08-22
PSFfiller is a very accommodating… PSFfiller is a very accommodating company. Their customer service is really fast and helpful. All questions and concerns are dealt with immediately. They go the extra mile for their customers.
Anna I.
2024-04-15
I like that I can bring in any fillable… I like that I can bring in any fillable document, it makes everything to do with a business much easier. It's just not very easy to do. I have to remember how to do it every time. Not sure if that is my fualt or if this is just not that user friendly.
Lena Cruz
2023-11-09
EXCELLENT Customer Service I requested a refund on my annual subscription after it had been taken out of my account. I explained that I don't use the software, and did not need to have my subscription renewed. The person who helped me was very kind, and responded promptly. I had a full refund within 48 hours! EXCELLENT customer service!
Claudia Welborn
2023-10-19
it's easy to fill out and send wherever you need to send any important documents it was simple, and easy to send my documents to wherever they needed to be sent. Also the signature was perfect, I didn't need to print and sign anything, it was all here for me.
Jacquie Exner
2022-12-23
I was struggling to change over my pdf… I was struggling to change over my pdf to filling and this made it very easy. I will always use this site going forward, Thank you!
M&M
2021-05-03
This made filing my documents SOOO much… This made filing my documents SOOO much easier! It also looks so much more professional than handwriting or typing in. Was so happy to find this.
Elizabeth Davidsmeier
2020-09-11

Lock PDF and Compress PDF for Macbook Pro

Protect your sensitive information and save space with the Lock PDF and Compress PDF feature for Macbook Pro. This tool gives you the power to secure your documents and optimize their size effortlessly.

Key Features

Easily lock your PDF files with password protection
Reduce file size without losing quality
User-friendly interface for quick processing
Batch processing for multiple PDFs at once
Compatibility with all PDF versions

Potential Use Cases and Benefits

Share confidential documents securely with colleagues or clients
Store multiple files on your device without consuming too much space
Send documents via email without exceeding size limits
Maintain the integrity of your files during compression
Organize your digital workspace effectively

By using the Lock PDF and Compress PDF feature, you can ensure that your important documents remain confidential while also freeing up valuable storage space on your Macbook Pro. This tool helps you find a balance between security and efficiency, making your workflow smoother and more productive.

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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
In the Preview app on your Mac, open the PDF, then choose File > Export. (Don't choose Export as PDF.) Click the Quartz Filter pop-up menu, then choose To reduce File Size.
In the Preview app on your Mac, choose Preview > Preferences. To choose how to display documents, click PDF or Images, then choose an option next to Define 100% scale as. To display a PDF or image at the same dimensions regardless of the screen's resolution: Select Size on screen equals size on printout.
Choose File > Set Password (from the File menu at the top of your screen), enter the requested information, then click Set Password.

#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