Downsize PDF File Size to 450kb 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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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
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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 software is excellent - really easy to use. I wasn#t sure whether to pay for something I'll only use a few times a year but decided to do so simply to save time searching for free software that probably wouldn't be as good. One minor niggle: I paid on my debit card and it took me back to the website, whereupon I had to pay again to gain access - not sure if I have paid twice or not. Would have been five stars other than for that.
2016-04-04
It's great! Only problem I had was trying to erase a hi-lited area I accidentally added. The software wanted me to pay for an upgrade for the eraser which I think is ridiculous guys. Other than that, awesome.
2016-12-23
It appears to be a good program and I intend to use it in my business and practice. One of the problems that I see is that there should be clearer explanations for some of the fields.
2017-04-15
This service was extremely helpful when I was in a pinch for an assignment for work! Loved being able to combine multiple PDF's into one cohesive document, as well as edit, add text, and highlight on my existing PDF. Easy to use and user-friendly!
2019-03-08
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.
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.
2019-08-16
Excellent PDF filling software
I really recommend this software, just get a good internet connection or else you might get a bit frustrated.
This software is really good for filling pdfs my clients send me and then sign them at ease, and the fact that you can use an extension for your mail and edit online without having to download saves a lot of time
Living in a country where slow internet connection is a constant problem, working with this software can be a pain sometime.
2018-05-17
Really Great Software
I like that it's easily to fill in pdfs and also create fillable pdfs.
I don't like that there aren't many support options available.
2021-12-10
PDF Filler is a great program to add to…
PDF Filler is a great program to add to any small business. It is very easy to use and has handled all my needs to this point.
2020-05-01
This app is not flooded with ads and/or private tools as far as I could check
I just needed to merge stuff and this website (didn't know it, it just popped after a simple search) showed me tutorials for all the tools they have to make my documents complete and personalized as needed. I am here because we live in an era where an app that does not flood you with advertisement and charge your for each tool available calling some of them 'premium' or 'plus' or 'pro max' is RARE. I want to be explicitly thankful about this. Useful for the purpose of being useful. Didn't believe stuff like this existed anymore.
2025-04-11
Downsize PDF File Size to 450kb Feature
Are you struggling with large PDF files that are difficult to share or upload? Our Downsize PDF File Size to 450kb feature offers a simple solution to shrink your files without compromising quality. This tool is designed to help you manage your documents easily.
Key Features
Reduces PDF size to a manageable 450kb
Maintains readability and essential content
User-friendly interface for quick adjustments
Compatible with various PDF formats
Use Cases and Benefits
Sharing files via email without exceeding size limits
Uploading documents to websites or cloud services
Storing multiple PDFs on devices with limited storage
Improving download speeds for clients or colleagues
By using the Downsize PDF File Size feature, you eliminate the frustration of large files. You can quickly prepare your documents for sharing, ensuring they are easy to send and access. This feature not only saves you time but also enhances your efficiency in handling PDF files.
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 compress a PDF to 1000kb?
Learn how to Compress PDF to 1000kb using pdfFiller Navigate to the pdfFiller and login or sign up with a new account. Click the Add New button to upload a document you want to reduce in size. Additionally, search for the templates from the pdfFiller library or navigate to the document with direct link.
How do I compress a PDF to 400kb?
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 to 450kb
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