Downsize PDF File Size to 40kb 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:
I was desperately trying to edit a pdf copy of the P&S and we could not convert it to a Word document. Finding your website where I could make edits to the form, made my life a whole lot easier. However, I work for a law firm and we normally do not have to do these types of documents. So I am afraid I will have to cancel once the document is finalized. At least, I will keep your website as a place to go to if there is a future need. Could you please cancel my membership after the 30 days I already paid? Thank you.
Lisbeth T
2016-06-16
Have been able to add signatures change dates and update pertinent information on the documents. Have not used extensively, but have been able to do everything I wanted so far. Good product!
Clem
2017-04-30
What do you like best?
The amount of tools avaliable gives a lot of possibilities working a PDF Doc. Its been very usefull to me. And its online! You could access the tool anywhere! I like the fact that it brings a possibility of working any kind of PDF doc.
What do you dislike?
I consider the price is a bit expensive. And sometimes I have a little difficulty changing the size of images included in a document, maybe this feature could be improved.
Recommendations to others considering the product:
Use it! Its very usefull and is online, give it a try
What problems are you solving with the product? What benefits have you realized?
Gives our company the posibility to aply signatures on docs. And doing corrections on different PDF with mistakes. In our Buisiness its very common to have changes in final documents as puchase orders. And PDFfiller is a great tool to correct mistakes that we have to face everyday.
José Pablo Gutiérrez Hidalgo
2019-01-28
What do you like best?
PDFFILLER has been one of the best platforms I’ve used in client document transmission. The price is unmatched for the services available and the HIPAA compliance seals the deal.
What do you dislike?
The only downside is how long some forms such as registration can take to complete when adding in the initial fillable fields.
What problems are you solving with the product? What benefits have you realized?
Many of my clients are throughout the country, so the ease of securely transmitting documents while maintaining HIPAA compliance is the best problem solved. I recently discovered the ability to have documents faxed digitally through the services and it’s cut down on my physical paperwork.
Karese Laguerre
2019-06-08
Accounting Assistant This software made it easy for me to complete a single 1099-MISC that i needed and that i wasn't able to use my current software for. I was able to quickly create the document and send it out to the necessary party on a time crunch. This would not be good to use for a large amount of 1099's but, it did meet my needs.
Kadi D.
2019-01-31
Easy to use and price is good easy to edit any pdf file and love that it has watermaker. everything is really easy to use and understand all in all i love it
Christy Cristobal
2024-01-18
This is the best site for PDF conversion This is the best site that I have ever come across in terms of PDF converters and I highly recommend it. I was able to work on my piece for days with no fear of losing it, something which happens with some converters making you begin it afresh. I recommend this site for anyone with a large document to work on.
Rose Mukonyo
2022-05-07
At first I had difficulty understanding how to use PDF Filler maybe because the way the dashboard was set up was that there were too many icons that made it seem too overwhelming.
Lisha F
2022-02-08
The learning curve is not too steep. I'd feel more confident with it, if there was a way to save the document other than clicking DONE which closes it....it's better than the government forms I've hassled with!
E. Kyle Tyner
2021-12-07

An easy-to-follow tutorial on how to Downsize PDF Size to 40kb securely

Every single byte matters when you share a file with someone online. You or your recipients can quickly use up storage simply because you’ve shared a lot of big files. Luckily, there’s a way you can Downsize PDF Size to 40kb so that you manage your documents with a more streamlined approach.

pdfFiller enables you to make documents lightweight in just a couple of minutes. Furthermore, you don’t have to worry about safety as you use it. Our solution has the framework adopted to safeguard your documents online.

How to Downsize PDF Size to 40kb online

Follow these simple steps and learn how to securely change your file’s size online.

01
To start with, register or sign in to your pdfFiller account.
02
Hit the Add New button to add your document.
03
Upload your document by selecting the available file-importing option.
04
Hit Upload to My Docs if your file doesn’t need editing.
05
Click on the ellipsis icon next to the uploaded file → Manage documentsSplit.
06
Choose the pages you want to separate from the input file → hit Split.
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As soon as completed, you can save your file to your online storage location or download it onto your computer.
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Add an additional layer of security by setting a password. This option can be accessed in Manage documents menu.

If you’re bogged down with your task and can’t proceed to Downsize PDF Size to 40kb, you can always rely on the professional support team.

Besides the feature to Downsize PDF Size to 40kb, you can also benefit from a set of other tools by pdfFiller that will make your document editing experience more secure and organized. Modify, annotate and eSign and make your forms dynamic with fillable fields. In addition, we offer a vast catalog of ready-to-use document templates and a powerful document creation solution to create files from scratch.

pdfFiller takes little time to grasp and run. You can easily switch from laptop and mobile and access or continue modifying documents from anywhere. Try our tool for your daily tasks!

Downsize PDF File Size to 40kb Feature

The Downsize PDF File Size to 40kb feature allows you to compress your PDF documents effortlessly. This tool makes it easy to manage your files without losing quality, ensuring you can share and store documents effectively.

Key Features

Reduce PDF file size to a maximum of 40kb
Simple and user-friendly interface
Preserves text and image quality
Fast processing time
Works on various devices

Potential Use Cases and Benefits

Perfect for email attachments or online submissions
Ideal for reducing storage space on your device
Enhances website loading speeds when uploading documents
Facilitates easier file sharing across platforms
Supports students and professionals in meeting file size limits

This feature solves your problem of managing large PDF files. By reducing the file size, you can easily share documents without the hassle of slow uploads or email rejection due to size limits. Embrace this effective solution to optimize your document handling process.

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!

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 to Compress Image Under 256kb Go to the pdfFiller and login if you're already a registered user or sign up with a new account. Click the Add New button and browse for a file you need to Compress Image Under 256kb. sync your cloud storage account so that you can search for documents from it.

Video guide about Downsize PDF Size to 40kb

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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