Reduce PDF Size Less Than 400 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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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:
The search feature is easy to use, I love the option to save the form to my own computer once it has been filled out. The option to use an app is wonderful.
Shannon
2014-06-11
So far... your chat feature to get support is great. I seem to be moving along just fine. I uploaded a document and completed areas of "fillable" information. I only did 4 STARS as I have not published this to my site and tested the form.
Louis R
2017-03-17
I really like the application a lot. I am finding the fact that you do not have a field value setting which comes in handy for allowing a Check Mark to have a Value and Calculate costs based on Check Marks or Drop Down Menus. I also would love a copy and paste a single field, this comes in handy for repetitive drop down menus. Prepopulating a field from an earlier field value would be great in helping people not have to enter same information more than once.
John L
2017-04-28
I like everything I have tried with the exception of the fact that I cannot download a fillable form to my desktop. I wanted to make a form that I could pull up quickly on my computer when I have a new patient intake. It only allows a link and too many steps to make this a good alternative to the paper and pen format I am currently using.
Denise G
2018-01-18
It.s a verry usefuly app, but i think is a little too expensive! So, please do something with the prices! We are glad to work with you! Thanks for your work.
Răzvan A
2019-08-02
What do you like best?
Great tool for creating templates, saves time and money.
What do you dislike?
I have not experienced any problems with using this product. It works as anticipated.
Recommendations to others considering the product:
Excellent tool for my small business
What problems are you solving with the product? What benefits have you realized?
Saving $$$ by not having to purchase forms
User in Real Estate
2019-05-28
Just plain user-friendly Very intuitive UX. Just easy to use that I don't even have to think about it. Normally I can see negatives with a product. Not this time however. Works great.
Dave M.
2022-09-24
Ryan on the Support Team was extremely helpful and patient. He walked me through all of the steps to complete the form to my satisfaction. Thank you Ryan for teaching me!
Elyssa
2020-05-21
Ryan - Support Team Ryan on the Support Team was extremely helpful and patient. He walked me through all of the steps to complete the form to my satisfaction. Thank you Ryan for teaching me!
Elyssa Michelle
2020-05-21

How to Reduce PDF Size Less Than 400 KB

To Reduce PDF Size Less Than 400 KB, follow these steps

01
Navigate to the pdfFiller website and login if you’re already a member or create a new account for free
02
Click the Add New button and browse for a file you need to Reduce PDF Size Less Than 400 KB; sync your cloud storage account to search for documents from there
03
Additionally, browse a template in the pdfFiller library or enter the document's URL
04
If you've already uploaded the file to your account, go to My Documents to find it
05
To reduce the size of a document, click on it and select Split in the right-hand menu
06
Indicate the pages you would like to separate from the original file by clicking on them
07
Divide the original file into several and specify which pages to include in each
08
Name the new files or leave them as is
09
Click Split and wait a few seconds
10
Save the results and click Download Now to your device

Reduce PDF Size Less Than 400 KB

Managing PDF documents efficiently is crucial in today's digital world. Our tool allows you to reduce PDF file sizes to less than 400 KB, making it easier to share and store your important files.

Key Features

Compress PDF files to under 400 KB while maintaining quality
User-friendly interface for quick and easy navigation
Compatible with various devices and operating systems
Batch processing for multiple files at once
No internet connection required for offline use

Potential Use Cases and Benefits

Easily send documents via email without exceeding attachment limits
Save storage space on your devices or cloud services
Improve document upload speed for online submissions
Share contracts, reports, or presentations without delay
Enhance collaboration by ensuring team members can access files quickly

By reducing your PDF sizes effectively, you tackle common issues such as slow uploads and file sharing limitations. Our solution empowers you to streamline your document management process, ensuring you can focus on what truly matters.

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 Size Less Than 400 kb

Reducing the size of a PDF file can be helpful when you need to send it via email or upload it to a website. With pdfFiller's Reduce PDF Size Less Than 400 kb feature, you can easily compress your PDF files without compromising the quality of the content.

01
Open the pdfFiller website or app and log in to your account.
02
Click on the 'My Forms' tab to access your saved PDF files.
03
Select the PDF file you want to reduce in size.
04
Once the file is open, click on the 'More' button located at the top right corner of the screen.
05
From the dropdown menu, choose the 'Reduce PDF Size' option.
06
A pop-up window will appear, allowing you to set the desired file size. Enter '400' in the 'kb' field.
07
Click on the 'Reduce' button to start the compression process.
08
Wait for the process to complete. The time taken will depend on the size of your PDF file.
09
Once the compression is done, you will be able to download the reduced PDF file.
10
Save the file to your desired location on your computer or device.

By following these simple steps, you can easily reduce the size of your PDF files to less than 400 kb using pdfFiller's convenient feature. Enjoy the benefits of smaller file sizes without compromising the quality of your documents!

#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