Compress PDF Online from 800mb easily with pdfFiller 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 Jan 1, 2026

Compress PDF Online from 800mb easily with pdfFiller

How to Compress PDF Online from 800mb easily with pdfFiller

To compress a PDF file online with pdfFiller, simply upload your file, select the compression level you desire, and download the optimized document. This process allows you to reduce file size without compromising its quality, making it easier to share or store.

What is PDF compression?

PDF compression is the process of reducing the file size of a PDF document without significantly affecting its quality. This is achieved by removing unnecessary data or optimizing elements such as images and fonts. It is especially useful for files with high-resolution images or large amounts of text.

Why is it essential to compress PDFs over 800mb?

Compressing PDF files over 800mb is essential for several reasons. First, large files can be cumbersome to upload or share, especially through email. Second, they consume more storage space, which can be a limitation for many users. Lastly, smaller files are quicker to load and share, enhancing overall accessibility.

What are the key features of pdfFiller's PDF compression tool?

pdfFiller offers a range of key features for PDF compression, including user-friendly interface, adjustable compression settings, and secure file handling. Users can choose from different compression levels based on their needs, ensuring they retain the essential quality of the document.

  • User-friendly interface: Easy navigation for all users.
  • Adjustable compression settings: Customize the file size and quality.
  • Secure file handling: Protects your documents during compression.
  • Compatibility across devices: Access the tool on various platforms.

What file formats does pdfFiller support for compression?

pdfFiller primarily supports PDF file formats for compression, allowing users to manage their documents effectively. Additionally, it can handle a variety of input formats that can be converted to PDF before compression, thus providing flexibility.

  • PDF documents: Directly compress existing PDFs.
  • Other formats: JPEG, PNG, DOCX (to be converted first).

How to customize compression levels?

pdfFiller allows users to customize compression levels based on their specific needs. Users can choose to prioritize either higher quality or file size reduction, thereby facilitating better management of document quality.

  • High quality: Retain maximum detail for images and text.
  • Medium quality: Balanced option for general use.
  • Low quality: Significant size reduction for faster sharing.

Can you process multiple PDFs at once?

Yes, pdfFiller supports batch processing, allowing users to compress multiple PDF files simultaneously. This feature is especially beneficial for businesses or teams that handle large volumes of documents regularly.

What is the process to compress PDF online with pdfFiller?

Using pdfFiller to compress a PDF is straightforward. Here is a step-by-step guide to get you started:

  • Go to pdfFiller's homepage.
  • Upload the PDF file you wish to compress.
  • Select the desired compression level.
  • Click ‘Compress’ to start the process.
  • Download the compressed PDF file.

What are the benefits of using pdfFiller for PDF compression?

Using pdfFiller for PDF compression presents various benefits. The platform not only offers high-speed processing but also ensures document security and quality during the compression process. Moreover, its intuitive interface facilitates a seamless user experience.

  • Fast processing speeds: Quickly compress large files.
  • Enhanced document security: Protect sensitive data.
  • Seamless integration: Works well with other pdfFiller functionalities.

Which industries can benefit from PDF compression?

Various industries can significantly benefit from utilizing pdfFiller for PDF compression. Sectors such as education, healthcare, legal, and corporate environments often deal with substantial documentation, making size optimization a necessity for efficiency.

  • Education: Students and institutions manage numerous PDFs.
  • Healthcare: Medical records often need sharing securely.
  • Legal: Law firms handle large cases requiring extensive documentation.
  • Corporate: Businesses need efficient document workflows.

How does pdfFiller compare to alternatives for PDF compression?

While there are many alternatives available for PDF compression, pdfFiller stands out due to its comprehensive feature set, user-friendly interface, and high security standards. Competing tools may offer basic compression but often lack the integration and functionality provided by pdfFiller.

  • Speed: pdfFiller typically compresses PDFs faster than many alternatives.
  • File security: pdfFiller prioritizes user data protection.
  • Additional features: pdfFiller integrates eSigning and editing capabilities.

Conclusion

Compressing PDF files over 800mb has never been easier with pdfFiller. With its powerful features, user-friendly interface, and secure processing, individuals and teams can effectively manage their documents. Start compressing today to enhance your productivity and streamline your document workflow.

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.
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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
FDA
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
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Regional Leader - Summer 2025
The ease and operation was fantastic. I get confused very easily with all the new technology. With PDFFILLER I was able start at file I found in the browser and fax it, import a file and email it without any trouble. I will be using this a lot.
Dorothy H
Impressed by the integration with Dynamics 365; disappointed that it didn't work in my trial immediately; impressed by the quick diagnosis by the support staff and responsiveness in identifying a solution
MOD A
What do you like best?
Accessing my files for changes or updates anywhere
What do you dislike?
Limits imposed after competing a process can be frustrating
Recommendations to others considering the product:
Best on the go.
What problems are you solving with the product? What benefits have you realized?
Ability to access, change, update and complete on the go
Andy Sarrazin
Go so far but not sure if I am willing… Go so far but not sure if I am willing to pay for it because I am only using during tax season for a few clients.
jadie110
It's easy It gives you access to do alot of things it's easy to understand and it gives you a lot of options to convert and send Haven't found one yet but when I do I will let you know until now it's very stable and reliable it's even cheap
Nurmis S.
He tenido una buena experiencia, pero lo único a mejorar que al realizar cualquier modificación queden alineados al texto, ya que al guardar el documento se pierde.
alejandro
Really good platform. Just try to fix the bug while opening documents at the dashboard. The bug is the following: Click on open item button It will send to authentication page.
Brian
I think 40 dollars is too much, but... I think 40 dollars is too much, what you offer is well worth it except for the fact that it's a service I would only use occasionally. So 40 bucks every month is way too much for me. But I do love what you offer.
MJG
Great service. I thought my subscription had expired but the tech support hooked me back up in a jiffy! I prefer to use PDFfiller program rather than the Acrobat Reader DC program. I will always renew my subscription in the future.
Linda T J.
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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.

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FAQs

If you can't find what you're looking for, please contact us anytime!
Contact Support
Open the pdfFiller website or app and log in to your account. Upload the PDF file you want to compress by clicking on the 'Upload' button. Once the file is uploaded, click on the 'Compress' button. In the pop-up window, select the '800kb' option from the 'Compression Size' dropdown menu.
1--Log in to a pdfFiller account. 2--Upload the file and open it in the editor. 3--Click on the Compress document button on the toolbar. 4--Choose the document quality and format if a conversion is needed.

Compress documents with a trusted solution

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