Reduce PDF Size to 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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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:
Once I figured how to use PDFiller it was great. It worked as I hoped and it served is intent. If the occasion arises again I will definitely use PDFiller. Thanks for your customer service attitude and your expeditious response to my requests and clarification.
William E. E
2014-05-10
Recently I needed to fill out several forms from my mortgage servicer. They emailed the forms in pdf format and wanted them signed and returned same day. I don't have a scanner available so I googled and found PDFfiller. I was able to get my forms filled out, signed, and sent back in a very short time. PDFfiller is very easy to use. It really saved my day!
Cheryl S
2014-11-16
All of my forms have looked super professional, and when I applied for my new job, the HR department thought it was going the extra mile to type out my application instead of handwriting it.
Aaron C. O
2015-05-18
I was able to locate and complete 10 years worth of 1099-R's online quite easily. They looked very nice and the process was much better than trying to hand type them on a typewriter! Saving the forms in multiple formats will also come in handy in the future.
Tena
2016-04-15
I love the ease of typing on the PDF, I'm still learning how to send it to others with fill in blanks. But I like it. Pricey for the redaction ability but I suppose better than Adobe
Allison O
2016-08-12
Great app Great app, and easy to use on the web and on the go..I would like to recommend adding merge pdf app as well. for deleting or moving pages, I recommend ability to delete/move more than 1 page at a time..thanks
AISYAH MOHAMED
2020-03-04
PDFFILLER HAS CHANGED MY PRACTICE - FOR THE BETTER I use this software everyday and have found it a necessity in my practice. Prior to having pdffiller, we still had to type into forms using a TYPEWRITER. No joke. With my legal practice there are numerous forms that we have to fill out. Not only does pdffiller have the usual ability to enter Text into a form, but the feature we rely on the most is the ability to DELETE and RE-TYPE into the document. This has improved the time it takes to draft and amend documents that were not originally created by our office. Sometimes it is difficult to save under a different name and I often accidentally save over a prior document.
Julia D.
2019-09-18
Easy to use once I figured it out Easy to use once I figured it out. I have been looking for a program like this for a while. It has everything you can possibly need at a very reasonable rate.
Shannon G.
2020-05-13
Your company is great. At this time, the govt is advising us to show them payroll and W2. W. On this note I will conceal my free trial. Sincerely. Elizabeth Obi
Anonymous Customer
2020-05-09

How to Reduce PDF Size to 400 KB

Follow this guide to Reduce PDF Size to 400 KB on pdfFiller

01
Go to pdfFiller and login to your account or create one if you're a new member
02
Click Add New to upload a document you need to compress. Search for the file you need on your desktop or one of the cloud storage services
03
Additionally, search for the documents in the file library or navigate to the document with direct link
04
If you have the document you need in your account, go to My Documents and find it there
05
Click the Split option in the right-hand menu to Reduce PDF Size to 400 KB
06
Indicate the pages you want to separate from the original file by clicking on them
07
You can also divide the original file into several and specify which pages to use in each
08
Type file titles to each of them or leave them as is
09
Click Split and wait
10
Click Download Now to save the results

Reduce PDF Size to 400 KB

Struggling with oversized PDFs? Our 'Reduce PDF Size to 400 KB' feature offers an effective solution. You can easily manage PDF files, keep them ready for sharing, and ensure they fit within file size limits.

Key Features

Compress files to 400 KB without losing quality
User-friendly interface for quick operations
Support for batch processing to save time
Compatibility with all PDF formats

Use Cases and Benefits

Send PDFs through email without exceeding size limits
Upload documents to websites that impose size restrictions
Store more files on your device by reducing file sizes
Share PDFs with clients or colleagues easily

By using our feature, you eliminate the frustration of dealing with large files. It empowers you to send, store, and share documents efficiently. Simplify your workflow and enjoy a smoother experience with reduced PDFs.

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 to 400 kb

Reducing the size of your PDF files can be beneficial in many ways. It helps save storage space, makes it easier to share files online, and improves the overall performance of your device. With pdfFiller's Reduce PDF Size to 400 kb feature, you can quickly and effortlessly compress your PDF files without compromising on quality.

01
Open the pdfFiller website or app on your device.
02
Sign in to your pdfFiller account. If you don't have an account, you can create one for free.
03
Once you're signed in, click on the 'My Forms' tab to access your saved PDF files.
04
Select the PDF file you want to reduce in size.
05
Click on the 'More' button located at the top of the page.
06
From the dropdown menu, choose the 'Reduce PDF Size' option.
07
A pop-up window will appear, allowing you to customize the compression settings.
08
In the 'Target Size' field, enter '400' as the desired file size in kilobytes (kb).
09
Click on the 'Apply' button to start the compression process.
10
Wait for the compression to complete. The time taken may vary depending on the size of your PDF file and your internet connection speed.
11
Once the compression is finished, you can download the reduced PDF file to your device or share it directly from the pdfFiller platform.

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

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.

#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