Compress PDF 400kb easily with pdfFiller 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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Last updated on Sep 20, 2025

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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.
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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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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 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:
IT HAS SOME TREAKY THINGS AND AT SOME POINT IF IT IS NOT PRINTED OR SAVE BEFORE HAND, YOU HAVE TO REPEAT THE WORK ALREADY DONE. IN THIS CASE, HAS BEEN A LITTLE UNPLEASANT SITUATION AND WASTE OF TIME, IT SHOULD HAVE SOME AUTOMATIC SAVING, AS IT OCCURS IN WORD.
DOMINGO A D
2016-07-24
kind of difficult to understand..sometimes it would not fill out the form and sometimes it would, then go back to the first signature and had to keep confirming.
RR
2017-01-17
It is a time saving tool. There are times that I am faced with having to annotate, update or have a document signed immidiately I turn to PDF Filler with confidence...
Leonides V
2018-04-30
I would've liked a place to find all the PDFfiller features. It was really difficult to make it until I found the think where it places textboxes for me. Overall good experience especially for something I didn't have to pay for!!
Anonymous Customer
2024-09-28
Everything I need For the price, I expected a lean version of other e-sign applications. But this has every feature I could possibly need so I'm very impressed.
Amanda
2023-09-15
Its been great. I am sorry to say I will not be able to do the full year as I needed a PDF on the emergency for some VA forms, but you saved my bacon for a low price... so long as the unsubscribing goes smooth. Thanks again.
Cody A S
2022-10-18
best customer service I've experienced Software works good, had no problem at all. The customer service was top notch. They helped resolve my account problems within the first hour I sent out the form. Polite and efficient. The excellent service provided was the last and fith star.
ye
2021-10-21
So far I have had no issues with this… So far I have had no issues with this software. It's been agreat help in allowing me to fill out documents without having print out and then scan in oreder to complete my work.
Vincent Williams
2020-07-22
listen I appreciate your services and recommend it to anyone based on their ability to process a financial authorization and so I didn't want PDF-filler to be discouraged but I'm sensitive to express I have to revisit your advisory environment some time after the year is up!
Michael R
2020-05-01

How to Compress PDF 400kb

Follow this guide to Compress PDF 400kb using pdfFiller

01
Go to the pdfFiller website and login or create a new account
02
Select Add New and browse for a file you need to Compress PDF 400kb, from your desktop or cloud storage
03
Alternatively, browse the pdfFiller library for a template you need
04
If you already have the document you need in your account, go to My Documents and find it there
05
To Compress PDF 400kb, click on it and select Split in the right-hand menu
06
Select the pages you want to extract from the original file
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Alternatively, you can divide the document in a half and keep the pages you need in it
08
Add a title to each document
09
Click Split and wait
10
Choose a path for saving newly created files and click the Download Now button

Compress PDF 400kb Feature

The Compress PDF 400kb feature lets you easily reduce the size of your PDF files, making them more manageable for sharing and storage. It is designed to help you streamline your document handling process with ease.

Key Features

Efficient compression to 400kb or less
User-friendly interface with simple steps
Preserves the quality of the document
Compatible with various devices and platforms
Fast processing time to save you minutes

Potential Use Cases and Benefits

Share large files via email without exceed limits
Save storage space on your devices and cloud accounts
Upload documents to websites with file size restrictions
Quickly prepare files for printing or distribution
Enhance collaboration by sending smaller files

By using the Compress PDF 400kb feature, you address common challenges related to file size. It allows you to share your important documents without lengthy delays or technical issues. This tool helps you maintain efficiency in your workflow, ensuring that you can focus on your tasks instead of worrying about file management.

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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 Use the Compress PDF 400kb Feature

We understand that file size can be a concern when working with PDF documents. That's why we have developed the Compress PDF 400kb feature to help you reduce the size of your PDF files without compromising on quality. Follow these simple steps to make the most of this feature:

01
Access the Compress PDF 400kb feature by logging into your pdfFiller account and navigating to the 'My Forms' page.
02
Select the PDF document you want to compress from your list of forms.
03
Click on the 'More' button located at the top right corner of the page.
04
From the dropdown menu, choose the 'Compress PDF 400kb' option.
05
Wait for the compression process to complete. This may take a few moments depending on the size of your PDF file.
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Once the compression is finished, you will be able to download the compressed PDF file to your device.
07
If you need to further optimize the file size, you can repeat the process or try using our other PDF optimization features.
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Congratulations! You have successfully compressed your PDF file to 400kb or less using the Compress PDF 400kb feature.

By following these steps, you can easily reduce the file size of your PDF documents while ensuring they remain high-quality and easily shareable. Start compressing your PDF files today and enjoy the benefits of a smaller file size without compromising on content!

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.
Click “Choose File" button (Or) Drag and drop files in the drop area to upload the file. Select "Output Settings" like optmize font, image, content and image quality. Click "Compress File" to compress pdf file size to 100 kb. Click "Download File" to download the new compress PDF file.
It will resample and compresses images and subset-embeds fonts that were left embedded. It also compresses document structure and cleans up elements such as invalid bookmarks. If your file size is already as small as possible, the Reduced File Size command will have no effect on the size of your document.
While Preview can reduce your PDF, it isn't able to preserve image quality. The problem with Preview's built-in file compression is how image quality drops drastically afterwards, causing any image or graphic in your PDF to look blurry and at times incomprehensible.

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