Resize PDF File Size to 400kb For Free

Drop document here to upload
Select from device
Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
Note: Integration described on this webpage may temporarily not be available.
0
Forms filled
0
Forms signed
0
Forms sent

Discover the simplicity of processing PDFs online

Card illustration
Upload your document in seconds
Card illustration
Fill out, edit, or eSign your PDF hassle-free
Card illustration
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

Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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:
It is a wonderful program to use now that I have figured out what today. It is very easy to move around in the program too. Thank you for the intro videos too!
Susan R
2015-06-22
It saved me during critical process with U.S. Customs, enabling me to execute a Power of Attorney. I still need to learn more about the features to better make use of the site.
Keith
2016-12-16
I would like to attend a webinar at some time, but for next few months I am far to busy to take time and energy for the webinar. I'm sure there is much to learn although I did succeed in working on document that needed to be done. This is a great tool; I look forward to continuing to use it. Thank you!
Karen S
2017-03-22
I had some trouble learning to use it and directions aren't consistent. Your Help area tends to be more sales pitch on what can be done in a field with no directions. I'm very grateful for availability of the service though I'll drop it once I have my house sold in a few months
Dayna B
2019-02-05
Few years with pdffiller I am their client for almost 3 years. I did my best to get how it works and was making bad reviews in appstore because complicated ui on the start. I was checking out competiting editors, but I could say that other apps were even more complicated. Many things changed from that time and editor became much more user friendly, got new options for saving money and time. I am less about challenging their customer service but sometimes updates are a bit confusing.
Vanessa Georgiou
2019-09-04
I adore PDFFiller they are great to help when small issues arise , and when you get frustrated with items not working . The staff is always ready to help and does not treat the customers like a number. I feel it is some of the best money we spend every year.We do not have a business , but we have to deal with many government offices and this is a great way to be able to fax and email and even mail via your local mail carrier and edit things that need to be sent.
Michelle W
2023-08-24
There are some minor things I have not figured out how to do. Not sure yet if they are just missing features, or just not readily available in a way that I was expecting.
Anonymous Customer
2020-06-15
It works really good although saving… It works really good although saving process for the PC is a bit bad because it doesn't save documents directly.
Isjan Cortes
2020-05-08
love pdffiler has made it my "go to" for tax forms, everything so far has worked great as far as downloads and fillable pdfs. will be purchasing in future for sure. thanks, team
keith
2025-04-02

An easy-to-follow tutorial on how to Resize PDF Size to 400kb safely

Every single byte matters when you share a file with someone online. You or your recipients can quickly run out of storage simply because you’ve shared many big files. Luckily, there’s a way you can Resize PDF Size to 400kb so that you manage your paperwork with a more streamlined approach.

pdfFiller enables you to make files compact in just a few minutes. Additionally, you don’t have to worry about security in the process. Our solution has the framework adopted to protect your documents online.

How to Resize PDF Size to 400kb online

Follow these straightforward steps and discover how to securely change your file’s size online.

01
To start off, create or log in to your pdfFiller account.
02
Hit the Add New button to import your document.
03
Upload your document by selecting the available document-importing option.
04
Hit Upload to My Docs if your file doesn’t need editing.
05
Click on the ellipsis icon next to the added file → Manage documentsSplit.
06
Choose the pages you want to split from the input file → hit Split.
07
Once processed, you can save your document to your online storage location or download it onto your computer.
08
Add an additional layer of protection by setting a password. This option is available in Manage documents menu.

If you’re bogged down with your task and can’t proceed to Resize PDF Size to 400kb, you can always rely on the dedicated support members.

Besides the option to Resize PDF Size to 400kb, you can also benefit from a set of other tools by pdfFiller that will make your document editing experience more secure and arranged. Modify, annotate and eSign and make your forms interactive with fillable fields. Additionally, we offer a vast catalog of ready-to-edit document templates and a powerful document generator to create files from scratch.

pdfFiller takes little time to grasp and run. You can easily switch from laptop and mobile and access or continue editing documents from anywhere. Try our tool for your routine tasks!

Resize PDF File Size to 400KB

Managing file sizes can be a hassle, especially when you need to share documents. The 'Resize PDF File Size to 400KB' feature allows you to reduce your PDF file size to a manageable level effortlessly. This feature is designed for users who want a quick, efficient, and reliable way to compress their documents without losing quality.

Key Features

Compress PDF files to a maximum size of 400KB
Maintain the original quality of your documents
User-friendly interface for easy navigation
Fast processing speed for immediate results
Compatible with various devices and operating systems

Potential Use Cases and Benefits

Email important documents without exceeding size limits
Save space on your devices by reducing file sizes
Upload documents to online platforms that have size restrictions
Share files easily with colleagues or clients
Ensure quick and smooth document transfers

By using the 'Resize PDF File Size to 400KB' feature, you can solve the common problem of large file sizes that hinder your ability to share important documents. Whether you need to send a report, presentation, or proposal, this tool ensures that your files remain accessible and manageable. Simplify your file-sharing process today and experience the ease of compression.

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!

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
Resize PDF 1Choose file. Select a PDF file to resize: upload the file from your computer or cloud storage service like Google Drive or Dropbox. 2Choose your resize PDF file settings. Slim your pages down, or help them bulk up! 3View and download. Our online PDF tool will begin to resize your file so please wait.
Simply follow the steps below: On the top toolbar, click Tools > Edit PDF > Edit. Hover your cursor over the image you want to edit. Click and drag the corners to resize the image.
How To Compress a PDF To 1mb or Less or Free Visit our online tool for PDF file compression. Upload your PDF file to the tool. Choose the appropriate compression level. Download your new PDF file, or try again until you're content.
How to compress a PDF to 200kb or less. Open the Tools center and select Optimize PDF Tool. Select the file you want to compress. Choose Reduce File Size in the top menu. Select your options and file version compatibility. Rename and save your file.

#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