Decrease PDF File Size to 4kb For Free
Drop document here to upload
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
Last updated on
Dec 29, 2025
Try these PDF tools
Edit PDF
Quickly edit and annotate PDFs online.
Start now
Sign
eSign documents from anywhere.
Start now
Request signatures
Send a document for eSignature.
Start now
Share
Instantly send PDFs for review and editing.
Start now
Merge
Combine multiple PDFs into one.
Start now
Rearrange
Rearrange pages in a PDF document.
Start now
Compress
Compress PDFs to reduce their size.
Start now
Convert
Convert PDFs into Word, Excel, JPG, or PPT files and vice versa.
Start now
Create from scratch
Start with a blank page.
Start now
Edit DOC
Edit Word documents.
Start now
Discover the simplicity of processing PDFs online
Upload your document in seconds
Fill out, edit, or eSign your PDF hassle-free
Download, export, or share your edited file instantly
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Every PDF tool you need to get documents done paper-free
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.
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.
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.
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.
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.
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:
What do you like best?
Easy to learn and easy to use. I use it for filling in permit application forms from the county agencies we need to apply for permits from. They are extremely frustrating in redundancy, asking for the same information over and over. PDFFiller makes it easy to fill out these forms.
What do you dislike?
Some of the buttons seem a little clunky but they are easy to use.
Recommendations to others considering the product:
PDFFILLER is an inexpensive alternative to other vendors.
What problems are you solving with the product? What benefits have you realized?
Easy to fill PDF forms and easy to share them with other people.
Easy to learn and easy to use. I use it for filling in permit application forms from the county agencies we need to apply for permits from. They are extremely frustrating in redundancy, asking for the same information over and over. PDFFiller makes it easy to fill out these forms.
What do you dislike?
Some of the buttons seem a little clunky but they are easy to use.
Recommendations to others considering the product:
PDFFILLER is an inexpensive alternative to other vendors.
What problems are you solving with the product? What benefits have you realized?
Easy to fill PDF forms and easy to share them with other people.
2019-08-22
PDF Filler has been a great tool for my…
PDF Filler has been a great tool for my businees. I would like to see more paperless record keeping tools and options available in the future.
2019-11-22
Nice application for editing
Nice application for editing. Takes a bit of getting used to but plenty of form filling options.
Easy to download and share files.
Pricing is ok.
2024-04-18
Great!
Great! I was able to create documents for childcare that are able to be sent electronically to reduce unnecessary contact while the COVID-19 spread continues.
2021-12-06
What do you like best?
Very great experience with editing pdf files. Helps to create a digital signature, no need to print the documents to sign them. PDFfiller does it all for you. What best is to save the paper save the environment.
Best website during such a pandemic situation, while working at home.
What do you dislike?
There is just one problem that it just provides limited font styles. Please provide more font options and some more features like double spacing etc.
Recommendations to others considering the product:
It is the best website if you are working from home if you are an environment lover and want to save the earth by not printing paper and also save money.
What problems are you solving with the product? What benefits have you realized?
We are in the transportation business, so we have to send the documents for the Border clearance.
Earlier, we used to print the documents and then put a border sticker and write notes with a pen on it.
But, with the help of this, we are saving a lot of paper. Just upload the docs to pdffiller and copy, paste border sticker, and write notes with edit text icon. Everything is easy now.
2021-02-16
I have never needed a pdf filler before…
I have never needed a pdf filler before but this website has made everything super easy to understand and use.
2020-10-10
Decrease PDF File Size to 4kb Feature
Reduce your PDF file sizes effortlessly. Our Decrease PDF File Size to 4kb feature allows you to manage documents more efficiently. You can easily shrink heavy files without losing quality or important details.
Key Features
Compress PDF files to a target size of 4kb
Simple, user-friendly interface
Preserve the original layout and formatting
Compatible with various PDF types
Fast processing time
Potential Use Cases and Benefits
Emailing large documents without exceeding size limits
Uploading files to websites with size restrictions
Storing multiple PDFs on devices with limited space
Sharing documents on messaging platforms easily
Creating smaller files for faster downloads
This feature solves your problem of managing oversized PDF files. By compressing your documents to 4kb, you gain more control over your digital space. Whether for work or personal use, this tool ensures your files are easy to share and handle, giving you greater efficiency in your daily tasks.
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
How do I reduce PDF size to 70 %?
Go to the Compress PDF tool. Drag and drop your PDF into the toolbox to reduce the file size. Choose the compression type and click “Compress.” The PDF compression tool will shrink the file down.
How do I reduce 90% PDF?
How to Compress PDF 90% Navigate to pdfFiller website and sign in to your account. Click Add New to upload a document you need to Compress PDF 90%. Alternatively, browse the pdfFiller library for the template you need. If you already have the document you need in your account, go to the Documents section and find it there.
#1 usability according to G2
Try the PDF solution that respects your time.