Reduce PDF Document Size From 500 kb to Under 300 kb 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 20, 2025

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
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

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:
Love it- so easy- wish there was a cheaper option for "stay at home moms" (could verify with a phone call) - since all I tend to use it for is school forms and household paperwork
Nichole C
2018-07-03
I couldn't find new forms to download… I couldn't find new forms to download from within the app but once I did find them online they were easy to work with
Dean
2019-03-14
It is super easy to use and most… It is super easy to use and most importantly, financially accessible. I hope your features only improve, if not remain stagnant. I love you.
naddy
2024-10-30
Easy to use and very helpful in my business I use this PDF Filler multiple times daily and it is so easy to use and makes my life so much easier when doing many things.
Nicole Arnold
2024-03-11
I canceled my trial but maybe I didn't… I canceled my trial but maybe I didn't complete it on my end. Either way the subscription was charged to my card and I contacted support which usually is a nightmare when you have billing problems and it was honestly quick and painless. Great service and they got my refund and account canceled quickly. Thank you to Alice from support
Randy Stewart
2022-11-10
I MADE A FEW ERRORS DUE TO UNCLEAR… I MADE A FEW ERRORS DUE TO UNCLEAR DIRECTIONS WHICH WERE EXPLINED TO MY SATISFACTION. A SATISFYING LEARNING EXPERIENCE.
BEN HARRISON
2021-11-07
Great program Great program. Let's you edit PDF, sign documents, send documents to clients or other persons to sign electronically. Also gives access (at least my package) to some limited legal forms which is helpful. Would highly recommend.
Krysten Patel
2021-02-02
PDFfiller was an easy and convenient service to use. I filled out my PDF no problem and saved my documents. The customer support team was extremely helpful and accommodating when I needed to change my plan. Highly recommend!
Emma S
2020-06-10
I am pleased with how easy it is to use… I am pleased with how easy it is to use the app. The support given is great as any concerns I had were dealt with promptly and professionally.
Esmine Lundy
2025-02-25

How to Reduce PDF Document Size From 500 KB to Under 300 kb

To Reduce PDF Document Size From 500 KB to Under 300 kb, follow these steps

01
Navigate to the pdfFiller.com website and login if you’re already a member or create a new account
02
Click the Add New button and browse for a file you need to compress; sync a cloud storage account to search for documents from there
03
Alternatively, browse the pdfFiller library for the template you need
04
If you've the file uploaded to your account already, go to My Documents to find and open it
05
To Reduce PDF Document Size From 500 KB to Under 300 kb, click on it and select Split in the right-hand menu
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Indicate the pages you want to separate from the original file by clicking on them
07
Additionally, you can divide the document in a half and keep required pages in it
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Type file titles or leave them as is
09
Click Split and wait
10
Save the results and click Download Now

Reduce PDF Document Size From 500 KB to Under 300 KB

Experience seamless file management with our tool designed to reduce your PDF document size. If you struggle with large files, this feature helps you minimize your PDFs, making them easier to store, share, and maintain.

Key Features

Compress PDFs efficiently without losing quality
User-friendly interface for quick adjustments
Supports various PDF types and sizes
Fast processing time to enhance productivity
Secure handling of sensitive documents

Potential Use Cases and Benefits

Ideal for sending documents via email
Perfect for uploading files to cloud storage
Great for maintaining website speed with smaller assets
Enhances collaboration by simplifying document sharing
Facilitates easier printing and distribution

By reducing your PDF size from 500 KB to under 300 KB, you can solve several common problems. Large files can hinder communication and slow down workflows. Smaller files transfer quickly, save storage space, and streamline your file-sharing processes. Take control of your document management today.

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!

How to Reduce PDF Document Size From 500 kb to Under 300 kb

Reducing the size of a PDF document can be helpful when you need to send it via email or upload it to a website. With pdfFiller, you can easily reduce the size of your PDF document from 500 kb to under 300 kb. Here's a step-by-step guide to help you:

01
Open the PDF document you want to reduce in pdfFiller.
02
Click on the 'Tools' tab in the top menu.
03
Select the 'Optimize PDF' option from the drop-down menu.
04
In the 'Optimize PDF' window, you will see a slider that allows you to adjust the compression level. Move the slider towards the left to increase compression and reduce file size.
05
As you move the slider, you will see the estimated file size displayed below. Aim to reduce the size to under 300 kb.
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Once you are satisfied with the compression level, click on the 'Apply' button.
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pdfFiller will now optimize the PDF document and reduce its size.
08
After the optimization process is complete, you can save the reduced PDF document to your computer or cloud storage by clicking on the 'Save' button.
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Congratulations! You have successfully reduced the size of your PDF document from 500 kb to under 300 kb using pdfFiller.

Reducing the size of your PDF document is now quick and easy with pdfFiller. Follow these steps to ensure your PDF is under 300 kb and ready to be shared or uploaded. If you have any further questions or need assistance, feel free to reach out to our support team.

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
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.

#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