Downsize PDF File Size less than 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:
The PDF filler provided an easy and efficient way to complete my PDF documents. It allowed me tailor the form to completely explain its intended purpose.
JACK P
2016-02-16
I am a new customer to PDFfiller. It is a Great App and the features are easy to navigate through. It has made my job a lot easier and it saves me a lot of time making my output of productivity awesome.
Carmen R. a
2017-11-02
Had a few difficulties with the process, but was able to sort it out after a little experimentation. I would like the ability to vary the size of signatures. I also tried to change the date format and set a new default but it didn't seem to work. Overall, I was ok with the program but I really didn't find it fitted my purposes.
Tony D
2020-04-04
What do you like best?
The result of editing and filling out PDF documents so the end product looks professional and neat.
What do you dislike?
Some of the editing features don't always line up perfectly in the final document. The efile feature is not always accepted for requires signatures.
Recommendations to others considering the product:
Great option for PDF editing.
What problems are you solving with the product? What benefits have you realized?
Helps me great professional looking completed forms.
Susan Bryant
2019-08-16
Wow! Finally a real online PDF editor, no more troubles on changing text and much more! Just found it randomly, and since the beginning it shows me lots of features to edit pdf like texts, images, signs, highlights and more. The graphic looks a bit oldie, but this is not a problem at all. Functionality first! 30 days trial, then you've to pay.
Giulio G.
2019-02-08
Excellent Product The product is offering me the ability to execute contracts/agreements on the fly no matter where I am. When traveling and a signature is required for contract execution, time is critical to completing the deal. PDFiller allows me to do that. PDFiller is simply the easiest and most useful product in its category. Simple to use and very user friendly. Honestly, it has done everything I have needed to for the past 3 years. If I had to say something, I would say maybe an easier way to save and send. But, that would be pushing it.
Verified Reviewer
2019-01-22
I find that using your program is easy to navigate and looks professional when completed. I find that using your program is rather easy to navigate. The only issue that I have had is when I try to print a document, there have been quite a few times that it will download to 63% and then gets stuck there. I have to close the document and try again....sometimes several times until I can print it. Besides that, it has been great!
Elaine Bostic
2023-01-22
Needed to edit doc urgently and was… Needed to edit doc urgently and was able to do so with PDF FIller and the seamless interaction made for edited doc.
e-bulls
2021-12-03
The software was actually really great and extremely useful. I didnt really experience any difficulties with it and was exactly what I needed and a quick pinch without having to install anything. There was one small issue with my account, but the support team got back to me within the same hour and resolved what I needed. Amazing all the way through.
nbsb2020
2021-03-26

An easy-to-follow guide on how to Downsize PDF Size less than 400kb safely

Every single byte is important when you share a document with someone online. You or your recipients can quickly run out of storage simply because you’ve shared a lot of big files. Fortunately, there’s a way you can Downsize PDF Size less than 400kb so that you manage your documents more efficiently.

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

How to Downsize PDF Size less than 400kb online

Follow these simple steps and discover how to safely change your file’s size online.

01
First, create or sign in to your pdfFiller account.
02
Click 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 uploaded file → Manage documentsSplit.
06
Select the pages you want to separate from the original file → hit Split.
07
As soon as processed, you can save your file to your online storage location or download it onto your device.
08
Add an extra layer of protection by creating a password. This option is available in Manage documents menu.

If you’re stuck with your task and can’t proceed to Downsize PDF Size less than 400kb, you can always rely on the dedicated support members.

In addition to the option to Downsize PDF Size less than 400kb, you can also make the most of a suite of other tools by pdfFiller that will make your document editing experience more secure and structured. Edit, annotate and eSign and make your documents dynamic with fillable fields. Additionally, we offer an extensive library of ready-to-use document templates and a robust document generator to create files from scratch.

pdfFiller takes little to no 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 daily tasks!

Downsize PDF File Size Less Than 400kb

Effortlessly reduce your PDF file size to ensure easy sharing and storage. With our Downsize PDF feature, you can compress large documents without losing quality. This tool is perfect for students, professionals, and anyone who deals with PDFs regularly.

Key Features

Compress PDF files to under 400kb easily
Maintain original quality and clarity
User-friendly interface for quick file uploads
Supported across various devices and platforms

Potential Use Cases and Benefits

Send important documents via email without size issues
Upload files to online platforms with strict size limits
Save storage space on your device or cloud account
Share files with clients or colleagues seamlessly

This feature effectively addresses the problem of oversized PDF files that can hinder your workflows. By reducing file size, you can streamline your processes and avoid frustrating delays. Enjoy a simpler way to manage your documents.

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
Go to the Compress PDF tool. Drag and drop your PDF file into the tool, choose 'Basic Compression'. Wait for us to work on reducing its file size. Click download to save your PDF document.
How to Compress PDF MB to kb Go to the pdfFiller.com website and login if you're already a registered user or sign up. Click the Add New button and browse for a document you need to Compress PDF MB to kb. Additionally, search for the documents from the file library or enter the document's URL.
How to Compress PDF to 250kb Navigate to the pdfFiller website and login or create a new account. Click the Add New button and browse for a file you need to Compress PDF to 250kb. Additionally, browse the pdfFiller library for the template you need.
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.
Go to the Compress PDF tool. Drag and drop your PDF file into the tool, choose 'Basic Compression'. Wait for us to work on reducing its file size. Click download to save your PDF document.

Video guide about Downsize PDF Size less than 400kb

#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