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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 Jan 23, 2026

PDF functionality with pdfFiller

What is PDF?

PDF, or Portable Document Format, is a versatile file format developed by Adobe. It is widely used for capturing and sharing documents in a manner that is independent of software, hardware, or operating systems. PDFs preserve the original layout, including fonts, images, and graphics, making them ideal for official documents.

Why PDF functionality is essential for document management

In the realm of document management, PDF functionality is crucial due to its accessibility and security features. PDFs allow users to share files without losing formatting, making collaboration seamless. Additionally, they support encryption and password protection, ensuring sensitive information remains secure during transmission.

Key features of PDF functionality

pdfFiller offers a range of features for manipulating PDF documents, including editing, e-signing, and cloud storage. Users can fill out forms, adjust text, and annotate files directly within the application, enhancing productivity and collaboration efforts.

Supported file formats for PDF functionality

In addition to PDFs, pdfFiller supports various file formats including DOCX, XLSX, PPTX, and image formats like JPG and PNG. This flexibility enables users to convert multiple types of documents into PDFs for easier sharing and editing.

  • PDF
  • DOCX
  • XLSX
  • PPTX
  • JPG/PNG

Compression levels and customization options

pdfFiller offers options to compress PDF files, reducing their size without sacrificing quality. Users can choose from various compression levels depending on their needs, allowing customization to ensure optimal file sizes for storage or sharing.

Batch processing and large volume PDF functionality

Handling numerous documents can be daunting. pdfFiller allows batch processing of PDFs, giving users the ability to edit and manage multiple files simultaneously. This feature is particularly useful for teams that deal with large volumes of paperwork regularly.

How to use PDF functionality with pdfFiller: step-by-step guide

Using PDF functionality in pdfFiller is straightforward. Users can follow these steps to get started:

  • Sign up for a pdfFiller account.
  • Upload your document in a supported format.
  • Use the editing tools to modify the PDF as needed.
  • Apply any desired compression settings.
  • Save, download, or share your edited PDF.

Benefits of PDF functionality via pdfFiller

Utilizing pdfFiller for PDF functionality presents several advantages for individuals and teams. Users gain access to a robust suite of tools for document management, which enhances efficiency and collaboration. The cloud-based platform ensures that documents can be accessed from anywhere, at any time.

  • Easy collaboration options.
  • Secured document sharing.
  • Convenient access from any device.

Typical use-cases and industries benefiting from PDF functionality

Various industries benefit from PDF functionality, including healthcare, legal, and education. Whether for sharing patient records, legal documents, or academic papers, the reliability of PDFs serves the needs of professionals across sectors.

  • Healthcare professionals share medical records.
  • Legal teams send and sign contracts.
  • Educators distribute course materials.

Alternatives vs pdfFiller for PDF functionality

While there are various alternatives to pdfFiller, such as Adobe Acrobat and Smallpdf, pdfFiller stands out with its comprehensive set of features focused on collaboration and ease of use. Compared to some alternatives, pdfFiller provides more integrations and user-friendly interfaces that cater to a wider audience.

  • Adobe Acrobat: Feature-rich but can be costly.
  • Smallpdf: Limited features compared to pdfFiller.
  • pdfFiller: All-in-one solution for PDF management.

Conclusion

In summary, pdfFiller offers powerful PDF functionality that meets the demands of modern document management. With its user-friendly interface, robust features, and accessibility, pdfFiller is an invaluable tool for anyone looking to optimize their PDF handling and enhance their workflow.

Try these PDF tools

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

Compress and edit PDFs in one place

Edit your PDF and compress it directly within the editor. Choose from high, medium, or low compression levels to balance quality and file size according to your needs.
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Equip yourself with powerful PDF tools

Edit PDFs online almost as easily as Word documents. Add text, adjust formatting, replace content, insert images, and more. pdfFiller has all you need to get your documents done from start to finish.
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eSign and send documents

Sign documents on your own or send them to others for signatures, whether a single recipient or an entire group. You can assign roles, manage the signing order, set reminders, and request additional authentication.
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Annotate and collaborate

Highlight important data, redact sensitive details, add sticky notes, and exchange comments in your PDFs. Then, instantly send documents for review or editing. You can also share files and folders with your team to boost collaboration.
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Organize and manage PDFs

Merge, split, rearrange, and convert PDFs into formats like DOCX, XLSX, JPEG, PNG, and PPTX. Secure your documents by locking them with a password or placing them in an encrypted folder.
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Secure files in the cloud

Organize your documents and templates in secure cloud storage and access them from anywhere. pdfFiller follows strict security regulations such as GDPR, HIPAA, PCI DSS, SOC 2 Type II, and others to help safeguard your data.
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How to compress your PDF?

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1. Upload your document

Upload a document from your device, cloud storage, email, or URL.
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2. Open a document in the editor

Edit your document and click the Compress button in the top menu panel.
Illustration

3. Set compression parameters

Select the file format, destination, and compression level, then hit Save.
Upload your document

Who needs this?

Explore how professionals across industries use pdfFiller to compress PDFs
Education
Real Estate
Healthcare
Finance
Sales
Insurance
Education

Education

Teachers and administrators can reduce file sizes for effortless sharing with pdfFiller’s compress feature, and enhance collaboration between students and educators with pdfFiller's tools designed for seamless collaboration.
  • Lesson plans
  • Student enrollment forms
  • Class schedules
  • Permission slips
Real estate

Real Estate

Real estate agents and brokers compress PDFs to quickly share documents with clients and colleagues via email attachments or a link. They also use pdfFiller to customize templates, ensuring everything is consistent and error-free.
  • Property listing brochures
  • Lease agreements
  • Sales contracts
  • Property management forms
Healthcare

Healthcare

Healthcare professionals use pdfFiller to create, fill out, and compress PDFs for secure document sharing and faster uploads to patient portals. Sending forms via links or embedding them on websites simplifies data collection and improves the patient experience.
  • Patient intake forms
  • Appointment schedules
  • Prescription forms
  • Consent forms
Finance

Finance

Financial analysts and accountants use pdfFiller to create, customize, and share financial documents. With the PDF compress feature, finance professionals can quickly convert documents in the right format, share and conveniently store them in the cloud.
  • Financial statements
  • Tax forms
  • Invoices
  • Expense reports
Sales

Sales

Sales teams use pdfFiller’s compress feature to easily share proposals and contracts with clients. Sharing documents via link or email helps speed up communication, close deals faster, and boost productivity.
  • Sales proposals
  • Quotation forms
  • Order forms
  • Customer feedback surveys
Insurance

Insurance

Insurance agents use pdfFiller to edit and compress documents like policy files, claims forms, and client onboarding materials for easy sharing and secure storage. With pdfFiller, they can share insurance documents via link or email to get them signed in seconds.
  • Insurance policy documents
  • Claim forms
  • Risk assessment reports
  • Client onboarding documents

Why compress documents with pdfFiller?

GDPR
AICPA SOC 2
PCI
HIPAA
CCPA
Learn more about security

Optimize quality at the right file size

pdfFiller offers three compression settings and shows the estimated file size. Need a smaller file? Simply bump up the compression level.

Convert & compress in one go

Convert your PDFs to Word, Excel, PPT, JPEG, or PNG and compress them in one step. This lets you get documents in the right format and size without juggling multiple tools.

Export & share with ease

Download your compressed file, send it directly to cloud storage, or share it with others in seconds. With pdfFiller, you don't have to manually move files whenever you need to compress or convert a document.

Compress documents with a trusted solution

Try easy-to-use tools for all your document management needs.
Upload your document

pdfFiller scores top ratings on review platforms

Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
As far as I have been using it it looks nice, the only problem that I found was when I choose to convert my pdf into a word document some letters and format change or is missing.
Anonymous Customer
PDF Filler is very convenient and well thought through. Now, if it only integrated with my tax return online service provider and auto-populated forms, ditto all others, it would be perfect.
Nora R
What do you like best?
That you allowed me to submit all that I had to the IRS.
What do you dislike?
That initially I could only submit 5 to the IRS.
What problems are you solving with the product? What benefits have you realized?
Electronic Submittals to the IRS.
JODI LYNN LIANZO
What do you like best?
E-signature technology for our remote clients
What do you dislike?
Users new to e-signature platforms always struggle with how to use it, indicating that some more work needs to be done to make it 'dummy proof'.
Recommendations to others considering the product:
It's well worth implementing PDFfiller in any organization, especially those which have ongoing needs of signatures. The cost savings in staff time alone makes it pay for itself!
What problems are you solving with the product? What benefits have you realized?
Remote clients now can sign various documents MUCH easier!
lyndie childs
I cannot find enough praise.. I cannot find enough praise for the support team at PDFfiller. That the products are exceptional goes without saying, but even the best product can fail without a solid customer service/ support team. Each time I have contacted PDFfiller I have received a prompt response outlining viable solutions and knowledgeable answers. With PDFfiller you may sign up for the product, but you will stay for the unparalleled support.
Valerie Varrone
PDFfiller is legit convenient PDFfiller is legit convenient. It lets me: ✅ Edit any PDF without printing or scanning — I just upload, fill, and save. ✅ Sign documents electronically — legally binding, secure, and no pen needed. ✅ Store and access files in the cloud, so I can work on docs from anywhere. ✅ Send forms via email or fax directly from the platform — no extra tools. ✅ Keep a professional workflow when dealing with business, taxes, credit disputes, and legal forms. I don’t have time to be printing, scanning, or chasing down a FedEx store just to sign a form. PDFfiller is my digital assistant — just like Ace here — keeping me efficient, official, and on point. So no shade — it’s just smart.
Aaron Carter A. C.
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Watch our PDF compress in action

Check out a quick video tutorial that shows how to compress any file into an editable PDF in three easy steps.

What businesses achieve with pdfFiller

Discover how you can benefit too.
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Marshall Orthopaedics

Streamlining healthcare paperwork for an orthopedic clinic.
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B2B Services Message Direct

Using templates to speed up document creation and boost conversions.
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Sales Frontline Insurance Group

Sales Frontline Insurance Group

Speeding up paperwork processes and closing more sales with online fillable forms.
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FAQs

If you can't find what you're looking for, please contact us anytime!
Contact Support
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.
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.
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.

Compress documents with a trusted solution

Try easy-to-use tools for all your document management needs.
Upload your document