Last updated on
Sep 20, 2025
Optimise PDF For Free
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Discover the simplicity of processing PDFs online
Upload your document in seconds
Fill out, edit, or eSign your PDF hassle-free
Download, export, or share your edited file instantly
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Every PDF tool you need to get documents done paper-free
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.
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.
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.
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.
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.
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'm going with the default you had.
"Works exactly as expected. Smooth, responsive, and intuitive interface."
That about sums it up. It was so obvious on how to edit text, increase it's size, move it around (great feature!), add checkmarks and Xs.
All around just very good.
2016-02-18
The forms are very easy to fill out. I was unable to comments in a few places where I ran out of room for heirs and needed to include a comment to refer to an additional page.
2018-01-17
What do you like best?
I like how easy it is to edit the content of a PDF. I've recently had to adjust a few documents which were not previously editable for me, and this has made it simple to keep things updated.
What do you dislike?
I would like to be able to choose the file destination when selecting Save As, rather than it defaulting to my Downloads folder.
What problems are you solving with the product? What benefits have you realized?
We've recently implemented new contracts for our accounts, and using PDFfiller has made creating them so easy. It's saved me a significant amount of time.
I like how easy it is to edit the content of a PDF. I've recently had to adjust a few documents which were not previously editable for me, and this has made it simple to keep things updated.
What do you dislike?
I would like to be able to choose the file destination when selecting Save As, rather than it defaulting to my Downloads folder.
What problems are you solving with the product? What benefits have you realized?
We've recently implemented new contracts for our accounts, and using PDFfiller has made creating them so easy. It's saved me a significant amount of time.
2019-01-29
What do you like best?
The ease of signing and saving to different cloud platforms like OneDrive
What do you dislike?
Not much unless the PDFfiller name could be removed from saved documents
What problems are you solving with the product? What benefits have you realized?
It’s very easy to use for signing things from leases to approvals
The ease of signing and saving to different cloud platforms like OneDrive
What do you dislike?
Not much unless the PDFfiller name could be removed from saved documents
What problems are you solving with the product? What benefits have you realized?
It’s very easy to use for signing things from leases to approvals
2019-10-07
This was so convenient
This was so convenient. It was quick and easy to register and begin filling out forms. This helped me out in a crunch to get my 1099 forms completed.
2019-02-22
PDFfiller Review
Great and easy way to make sure your PDFs are signed, sealed, and delivered as quick as possible.
As a contract administrator for my company, this makes signing PDFs easy, and allows it to be done in a timely manner. Easy to navigate, allows you to download your finished, signed PDF for storage.
Takes a little bit of time to learn the advanced functions, and a variety of color coding features who make highlighting PDFs more efficient when needed/if multiple people are adding notes.
2019-12-03
PDFFiller saved my books!
PDFFiller saved my books! As a young author, I had no idea what I was doing and deleted my original documents once the books were published. I only kept the print-ready PDFs. Years later, I realized there were a lot of spelling mistakes and errors in them, and wanted to re-publish. Since the books had photos, I couldn't simply convert to a doc. Most PDF tools online didn't work, or put on watermarks. PDFFiller allowed me to edit the text in the PDFs, to correct the spelling mistakes, and merge the documents into one cohesive PDF again. I was able to republish an edited book without the original documents, thanks to PDFFiller.
The one thing I missed that could make this a fantastic tool- the original book was 8.5x11. I wanted to republish at 6x9. I ended up having to resize it through a different tool, which simply shrunk everything instead of being able to directly resize the content. Due to that, the book appears much smaller on the pages than it should, and I've received some complaints that it's harder to read. If PDFFiller had a viable PDF resize tool that worked to resize the content versus simply shrinking the document, it would be a stellar addition to the repertoire.
2019-02-11
Gestion documentos empresarial
Satisfactoria de gran calidad una de las mejores herramientas digitales de gestión documental
La firma digital poder tener esto.en contratos de trabajo para recursos humanos y para clientes signar cada doc es vital brinda legalidad y certeza
La conversión a pdf es un tanto dificil ppderla implementar
2022-11-06
I was impressed! I had tried another route and it was horrible. After hours of working on my document in another program my stress level skyrocketed. Then I am not even sure how I got to this place but I am so happy I did! I will be back for sure. I highly recommend pdfFiller. Great job everyone!
2021-06-29
Optimise PDF Feature
Enhance your PDF experience with the Optimise PDF feature. This tool allows you to streamline your documents for smoother sharing, reduced file sizes, and improved accessibility. Whether you are a student, a professional, or anyone who works with PDFs, you will find value in this efficient solution.
Key Features
Compress large PDF files without losing quality
Adjust resolution settings for images within PDFs
Merge multiple PDFs into a single, compact file
Remove unwanted elements to declutter your document
Fast processing for quick results
Potential Use Cases and Benefits
Easily share PDFs via email without exceeding size limits
Prepare documents for online submission or digital publishing
Store archived documents efficiently with reduced space requirements
Organize and manage multiple documents seamlessly
Enhance loading times for online access and viewing
The Optimise PDF feature addresses common problems of large file sizes and cluttered documents. By using this tool, you can simplify your workflow and focus on what matters most. You will save time and resources while ensuring your PDFs are easy to share and read.
How to Use the Optimise PDF Feature in pdfFiller
The Optimise PDF feature in pdfFiller allows you to reduce the file size of your PDF documents without compromising their quality. Follow these simple steps to make the most out of this feature:
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Open the pdfFiller website and log in to your account.
02
Upload the PDF document you want to optimize by clicking on the 'Upload Document' button.
03
Once the document is uploaded, click on the 'Optimise PDF' button.
04
pdfFiller will automatically analyze the document and suggest the best optimization options for you. These options may include compressing images, removing unnecessary metadata, and adjusting the resolution.
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Review the suggested optimization options and select the ones that suit your needs. You can choose to apply all the suggested optimizations or only select a few.
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After selecting the desired optimization options, click on the 'Optimise' button.
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pdfFiller will start optimizing the PDF document. The time it takes to complete the optimization process depends on the size of the document and the selected optimization options.
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Once the optimization is complete, you can download the optimized PDF document by clicking on the 'Download' button.
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Congratulations! You have successfully optimized your PDF document using the Optimise PDF feature in pdfFiller.
By following these steps, you can reduce the file size of your PDF documents and make them easier to share, store, and manage. Start optimizing your PDFs today and enjoy the benefits of a more efficient document workflow!
Did you know?
Michael Brown Search Engine Optimization: What is the optimal PDF file size for a website? The short answer to this question is small. I suggest no more than 1,024kb. Google prefers that PDFs be rendered, indexed, and ranked similar to what it is done with websites.
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
What does optimize a PDF mean?
Answer: To optimize a PDF usually means to reduce the size of the files so that they are more optimal for Internet use. If you work with PDF files, there is a good chance this will be useful to you. By shrinking the size of the file, you can now send the PDFs as email attachments or even a bulk of them.
How do I make a PDF file smaller, so I can upload it?
Locate the PDF file you want to make smaller.
Click on and hold the PDF file.
Drag the PDF file to the Drop PDF here icon on the screen. The file will upload and begin compressing.
Scroll down and click on Download File Now. ...
Select the location where you'd like to save the file.
Click on Save.
How do I reduce the size of a PDF for printing?
Choose File > Print.
From the Page Scaling pop-up menu, select one of the following options: Fit To Printable Area Scales small pages up and large pages down to fit the paper. ...
Click OK or Print.
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