Resize 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
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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:
Aside from the cost associated with its use, I love PDFfiller! It is easier to use than the typewriter function in Adobe Acrobat and I could place text exactly where I needed it. One other recommendation is adding a spell check when finishing up the document. Respectfully, -RPS
Robert S
2016-10-02
The software is really good The software is really good, haven't tried the customer service yet.My only main issue is that it deals with the text as line by line and not as a block of text, and sometimes it when editing the text it makes it smaller automatically just by clicking on it.This makes it a bit harder to edit at some times but will see if it affects me much or if I can find a way around it. The rest is really well organized and efficient.
George A
2020-02-07
Good for business Works well most of the time with only about 5% of customers having difficulty signing documents. Plan to keep using PDFFILLER does everything I need it to do for my business: quick edits, templates and storage. Some workflow improvements could be made to save clicks and therefore time. Would like more flexibility to send templatized emails
Mark S.
2019-09-18
Great product and full refund when cancelled before trial ended I took out the trial and paid 2 x €1.25 installments. I used the product which was the best I found especially given you can edit PDFs with it. I cancelled after a few hours and both payments were refunded as promised. I would have been happy to pay a single use fee for this service but the subscription is too much for my once off use case
Michael Maher
2023-12-07
It was frustrating at the beginning. I don't know how to rename a document. I will try and read the manual within the next week. I will attend the webinar.
Willa Marie L
2021-10-07
Though it is new to me Though it is new to me, and signed up today, it will take sometime to know how good I am feeling about it. So far, I am satisfied Thanks
Nimo Hirsi
2021-02-19
There are some minor things I have not figured out... There are some minor things I have not figured out how to do. Not sure yet if they are just missing features, or just not readily available in a way that I was expecting.
anonymous A.
2020-06-15
Chatted online to cancel and refund $96 that I was charged and I got a pretty friendly guy named Peter! He was sweet and fast! If I needed this particular application again, I would definitely reuse them!!!
Cabria M
2020-05-03
Great to use Great to use, but wish the font/size/color of text would always remain as the original was during editing existing text, or at least show what that information is to the user.
TZ
2025-02-03

An easy-to-follow guide on how to Resize PDF Size to 40kb safely

Every single byte is important when you share a document with someone online. You or your recipients can quickly use up storage simply because you’ve shared many big files. The good news is that, there’s a way you can Resize PDF Size to 40kb so that you manage your documents with a more streamlined approach.

pdfFiller enables you to make files lightweight in just a few minutes. Furthermore, you don’t have to worry about security as you use it. Our solution has the framework adopted to protect your documents online.

How to Resize PDF Size to 40kb online

Follow these straightforward steps and learn how to safely change your file’s size online.

01
To start with, register or log in to your pdfFiller account.
02
Click the Add New button to add your file.
03
Upload your document by choosing the available file-importing option.
04
Click Upload to My Docs if your document doesn’t need editing.
05
Click on the ellipsis icon next to the added file → Manage documentsSplit.
06
Choose the pages you need 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 device.
08
Add an additional layer of security by setting a password. This option is available in Manage documents menu.

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

In addition to the feature to Resize PDF Size to 40kb, you can also take advantage of a suite of other tools by pdfFiller that will make your file editing experience more secure and arranged. Modify, annotate and eSign and make your forms interactive with fillable fields. Additionally, we offer a huge catalog of ready-to-edit file templates and a powerful document generator to create files from scratch.

pdfFiller takes little to no time to learn and run. You can easily switch from laptop and mobile and access or continue editing paperwork from anywhere. Try our tool for your routine tasks!

Resize PDF File Size to 40kb Feature

Managing large PDF files can be challenging. The Resize PDF File Size to 40kb feature helps you reduce your PDF file's size conveniently. This feature ensures your files remain manageable while retaining their essential content.

Key Features

Effortlessly resize PDF files to 40kb
Maintain original quality of content
User-friendly interface for quick adjustments
Compatible with various devices and platforms
Fast processing times to save you time

Potential Use Cases and Benefits

Emailing large documents without exceeding size limits
Uploading PDFs to websites or platforms with strict size requirements
Sharing files easily with colleagues or clients
Storing documents efficiently without taking up too much space

This feature solves the problem of handling oversized PDF files. It enables you to resize your documents seamlessly, ensuring you can share and store them without hassle. By using this tool, you can manage your PDFs effectively, making your tasks simpler and more efficient.

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 reduce the image size in KB/MB? To reduce the image size in KB or MB online, first upload it to ResizePixel's website. Enter a desired file size and select the corresponding unit of measurement (KB or MB). Then proceed to Download page to get the image file.
How to Reduce PDF File Size Below 40 KB Navigate to pdfFiller website and login to your account. Click the Add New button and browse for a document you need to compress. Alternatively, browse the pdfFiller library for a template you need.
How to Compress a PDF to a Chosen Size Go to the 'Compress PDF' online tool. Select your PDF, then drag and drop it into the tool. Choose either 'Basic compression' or 'Strong compression'. We'll also show an estimation of the compression rates here. Click 'Choose option' to compress your document. Download your PDF.
You can magnify or reduce a PDF by an exact percentage. Choose File > Print. From the Page Scaling pop-up menu, select Tile All Pages to expose the Tile Scale % option. For Tile Scale, type the percentage you want to magnify or reduce the PDF. Click OK or Print.
How to Compress JPEG File to 40kb Go to pdfFiller and login to your account or create one if you're new to the service. Click the Add New button to upload a document you would like to Compress JPEG File to 40kb. search for the file you need on your device or one of the cloud storage services.
Learn how to Compress JPEG File to 40kb using pdfFiller Go to pdfFiller and login to your account or create one if you're new to the service. Click the Add New button to upload a document you would like to Compress JPEG File to 40kb. search for the file you need on your device or one of the cloud storage services.

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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