Last updated on
Jan 16, 2026
Reduce PDF Size Less Than 400 kb For Free
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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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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.
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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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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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.
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.
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What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
I am new at this point. so far all is working fine. On the few I've used the program with it has been smooth and the people signing have liked the ease of use
2015-10-24
It's really convenient, I've been using it to fill out paper applications since I don't like filling them out since I have dysgraphia. I have some slight issues though, like I had one application where the check box would automatically do a cross and if I want to do a checkmark I have to drag it, which I also have issues with it aligning correctly. alignment isn't too bad, but it's slightly off. Otherwise I love using this site. :D
2019-10-29
What do you like best?
The ease of which it is to use and located templates that are applicable.
What do you dislike?
In the beginning did not find it to be user friendly that all changed when they reached out to me to offer help.
Recommendations to others considering the product:
Don't be afraid to ask for HELP - Great Customer Service and follow-up too.
What problems are you solving with the product? What benefits have you realized?
Mostly HR related so far, such as write ups, termination, evaluations.
The ease of which it is to use and located templates that are applicable.
What do you dislike?
In the beginning did not find it to be user friendly that all changed when they reached out to me to offer help.
Recommendations to others considering the product:
Don't be afraid to ask for HELP - Great Customer Service and follow-up too.
What problems are you solving with the product? What benefits have you realized?
Mostly HR related so far, such as write ups, termination, evaluations.
2018-12-04
What do you like best?
Changing things (like dates) on insurance forms helps us a great deal when the insurance information stays the same and only the date needs changed. (Accord forms). We don't have to completely retype an insurance renewal form. So Handy
What do you dislike?
I have helped a colleague in inputting his information on flyers that had someone else's and the eraser showed lines in the final product. I had to figure out what was going on and I figured out I could increase the eraser to remove items rather than going over it several times (like wite-out tape).
Recommendations to others considering the product:
If you need to make changes to documents that you do not want to retype over and over again, then this product is a handy tool. Also, for doing 'already-made-up-flyers' to use for yourself by adding your own information is great. I used to have to remake everything with Corel Draw. This is waaaaaaay easier!!
What problems are you solving with the product? What benefits have you realized?
Non really for what I use it for.
Changing things (like dates) on insurance forms helps us a great deal when the insurance information stays the same and only the date needs changed. (Accord forms). We don't have to completely retype an insurance renewal form. So Handy
What do you dislike?
I have helped a colleague in inputting his information on flyers that had someone else's and the eraser showed lines in the final product. I had to figure out what was going on and I figured out I could increase the eraser to remove items rather than going over it several times (like wite-out tape).
Recommendations to others considering the product:
If you need to make changes to documents that you do not want to retype over and over again, then this product is a handy tool. Also, for doing 'already-made-up-flyers' to use for yourself by adding your own information is great. I used to have to remake everything with Corel Draw. This is waaaaaaay easier!!
What problems are you solving with the product? What benefits have you realized?
Non really for what I use it for.
2019-05-21
Better than Adobe PDF!
Better than Adobe PDF and much much more affordable. Ideal for those with need to edit their documents but not too frequently.
2020-03-25
Interesting product the pdfFiller. I would like to learn what else I can do with this software. The new look for the PDF is wonderful but I don't know if I would be able to use the old PDF from Microsoft. It seems I just paid my Microsoft subscription. It seems that the PDF is a software of it's own and doesn't come with the Microsoft Tools.
2024-07-12
It is useful. Only thing I would like is for it to figure out what font I had on the document BEFORE I edit it. I have contract templates that I use that I have to edit sometimes and finding the font that will match that size and actual type is very difficult. i usually end up just dealing with whichever one I find. If there is a way to do that, please let me know via email.
2021-11-02
What do you like best?
Flexibility and autofill of prior info..
What do you dislike?
Some current year tax forms only show in "draft" form
Recommendations to others considering the product:
none
What problems are you solving with the product? What benefits have you realized?
Easy to file out tax forms. Autofill feature is great. Very efficient
2020-08-26
It does what it is supposed to do
It does what it is supposed to do. I don't like having to put the 4 digit code in.....maybe that is just for trial??? Easier than Adobe.
2020-05-06
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.
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!
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