Downsize PDF File Size to 512kb For Free

Drop document here to upload
Select from device
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

Discover the simplicity of processing PDFs online

Card illustration
Upload your document in seconds
Card illustration
Fill out, edit, or eSign your PDF hassle-free
Card illustration
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

Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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.
Card illustration

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:
Surprised to find out, after filling out the form, that it is a paid service. Customer Service (Sam) was very helpful and pleasant, and sorted things our for me.
Peggy C
2014-08-14
im just learning with a new business i just started. i love it. I dont have a printer or scanner so i really appreciate you guys for offering the services you do through PDF.
keisha m
2015-12-01
Had a problem with being unable to save a document. However Sam on the chat line was very helpful (although we could not recover it) and suggested changing the input from javascript to 'flash'. I have now managed to save it.
Andy M
2018-10-04
What do you like best?
I like that the program is pretty intuitive and that I’m able to figure most things out on my own. I am able to erase and utilize previously filled forms that otherwise I might have to obtain from another source. The time and energy savings for me offsets the cost. In addition, I like being able to work on the program from a mobile standpoint - as long as I have cell phone or internet connectivity, I’m able to access and work on documents at my convenience.
What do you dislike?
Nothing that I really dislike. I still struggle with how to send a document directly out of the program to someone that may or may not have sufficiently updated software or skills to open. I’ve worked around this by saving the document and then sending from a cloud storage site.
Recommendations to others considering the product:
I’ve used tillable Adobe programs and PDFfiller meets or exceeds the capabilities of the Adobe programs I have used.
What problems are you solving with the product? What benefits have you realized?
Ability to fill out insurance applications and forms for use with multiple end users.
Jim Adams
2019-01-28
Efficient service I had great service and very efficient. I was asking for a refund ,which I thought I wouldn't get,to my surprise Pdf filler has given me the refund and it should be in my account within a few days. The sales assistant who I was emailing is named Phoebe. Phoebe made the whole process a breeze and was very polite. Thank you Pdffiller. I appreciate it.
sarah attenborough
2023-08-06
This app is a life saver This app is a life saver, it has saved me so much money and time by not having to print, a document, fill out the document and then fax it back.
Cphaire
2022-01-22
What do you like best? The ability to upload documents as templates, to work on completed documents, whether changing page order or add/modify information. What do you dislike? I find it challenging to change fonts and text color. I'm not even sure it's possible. What problems are you solving with the product? What benefits have you realized? Simplification of creating clear, typed forms that elevate the professionalism of everythign we do.
Administrator in Biotechnology
2021-02-16
I like it very much, I think it has great fearures... I like it very much, I think it has great fearures and it has helped me a lot... so much that I was ready to become a paid user. However, 2 of the last documents I uploaded to the system were cut-off and seriously changed (different format, things missing, etc) the uploaded document did not show as an identical version of the original document and that made me change my mind. I use it for contracts and they need to be exactly as the original document. These are legally binding documents, so because of that, I decided not to continue the service after the free trial ends.
Maria G.
2020-06-28
I have used it several times and it works great! I like the eSign feature that allows me to create important documents and sned them via email to get signed.
Jose
2020-05-07

An easy-to-follow guide on how to Downsize PDF Size to 512kb 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 a lot of large files. Fortunately, there’s a way you can Downsize PDF Size to 512kb so that you manage your documents more efficiently.

pdfFiller enables you to make documents compact in just a couple of minutes. In addition, you don’t have to worry about safety in the process. Our solution has the framework adopted to protect your documents online.

How to Downsize PDF Size to 512kb online

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

01
To start off, register or log in to your pdfFiller account.
02
Hit the Add New button to import your file.
03
Upload your file by choosing the available file-importing option.
04
Click Upload to My Docs if your file doesn’t need editing.
05
Click on the ellipsis symbol next to the added file → Manage documentsSplit.
06
Select the pages you need to separate from the original file → hit Split.
07
As soon as completed, you can save your document to your online storage location or download it onto your computer.
08
Add an additional layer of protection by creating a password. This option is available in Manage documents menu.

If you’re bogged down with your task and can’t proceed to Downsize PDF Size to 512kb, you can always rely on the professional support team.

In addition to the option to Downsize PDF Size to 512kb, you can also take advantage of a set of other tools by pdfFiller that will make your file editing experience more secure and structured. Modify, annotate and eSign and make your documents dynamic with fillable fields. Additionally, we provide a vast library of ready-to-edit file templates and a powerful document creation solution 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 documents from anywhere. Try our solution for your daily tasks!

Downsize PDF File Size to 512KB

Reducing the size of your PDF files is now simpler than ever. With our Downsize PDF File Size to 512KB feature, you can easily manage file sizes for better sharing and storage without losing quality. This tool meets your needs whether you are sending documents via email, uploading files online, or archiving important paperwork.

Key Features

Compress PDFs to a maximum size of 512KB
Maintain the original content and formatting
User-friendly interface for quick downsizing
Save time and bandwidth when sharing documents

Potential Use Cases and Benefits

Emailing large files without exceeding size limits
Uploading PDFs to websites with strict size requirements
Storing documents efficiently on your computer
Sharing presentations or reports with colleagues easily

This feature can help solve your problem of large file sizes preventing effective communication. By downsizing your PDFs, you ensure that your files are easily shareable and accessible. The tool streamlines your workflow, allowing you to focus on the content instead of file management.

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 PDF to Under 512kb Go to pdfFiller website and login to your account or create one if you're new to the service. Click the Add New button and browse for a document you need to compress. Additionally, browse the pdfFiller library for the template you need.
How to resize your PDF file 1Choose file. Select a PDF file to resize: upload the file from your computer or cloud storage service like Google Drive or Dropbox. 2Choose your resize PDF file settings. Slim your pages down, or help them bulk up! 3View and download.
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.

Video guide about Downsize PDF Size to 512kb

#1 usability according to G2

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