Last updated on
Jan 16, 2026
Compress Excel to Under 512kb easily with pdfFiller 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
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:
Very versatile software for editing (specifically filling in) PDF documents. I looked specifically for software to fill out tax forms and PDFfiller exceeded my hopes and expectations. Good job.
2016-03-27
I am just learning about this program. So far it is easy and appears secure. I have initially been using the redaction/ blackout feature for several PDF files that I am sending to a client and it has been very effective. I am impressed with the "save" feature in that it allows you to save the edited file in a different format, I.e. Word.
2017-03-16
What I like the most is the intuitiveness and ease of use.. This is the most friendly and hassle free form filler I've ever used so far. Good job guys and girls keep it that way!
2017-04-11
I like the program a lot. You recently changed the format a little. When I want to save a document to my computer, I can't tell it where to save it; it automatically saves it to my downloads, which I do not like. Before you changed the format, I was able to save a PDF completed document to whatever file I needed to on my computer. I would like to be able to do that again.
2017-04-15
i love the user experience but it is a little difficult to tell where the writing will show up on the lines once I save to PDF and send to clients. also, if the lines are close together it is hard to tell if your letters will get cut off. but overall its a great product going to try to use online and see how that works.
2019-02-03
I discovered PDFfiller.com during a Google search. I wanted to fill in a job application professionally instead of hand written. How very nice of them to let me try it for free. I've tried other free services in this same manner and they were just too difficult to work with when I'm in a hurry. With this program, I clicked on the application, it downloaded, and I started filling in my info! No learning curve AT ALL.
2020-02-11
it's a little bit too expensive for me. I will not have to use it very often, maybe only once or twice a month for work, but i do require the premium package for all of the features that i need to have. so it just seems crazy to me to pay almost $200 a year for something im only going to use 24 times the whole year. other than the too high price, i think its a great program!
2020-03-06
What do you like best?
PDFfiller is very user-friendly and has great features. We use it for fillable online registration for our group tours as well as to edit pre-existing PDFs
What do you dislike?
We make many fillable enrollment forms that are the same except for the title. Would be helpful if we could regenerate a new PDF (with the fillable areas in tact) and just change the title to make a new PDF
What problems are you solving with the product? What benefits have you realized?
Online registration, surveys
PDFfiller is very user-friendly and has great features. We use it for fillable online registration for our group tours as well as to edit pre-existing PDFs
What do you dislike?
We make many fillable enrollment forms that are the same except for the title. Would be helpful if we could regenerate a new PDF (with the fillable areas in tact) and just change the title to make a new PDF
What problems are you solving with the product? What benefits have you realized?
Online registration, surveys
2020-02-05
PDF Filler as tool for Securing PDF files
Very useful, convenient and very easy to use. A great tool for businesses.
I like PDF filler the most when I would like to encrypt and decrypt documents, merge PDF files, crop or rotate PDF pages.
I actually like PDF filler and there is nothing that I do not like in this software. It helped me big time with my PDF documents organization.
2020-01-08
How to Compress Excel to Under 512kb
To Compress Excel to Under 512kb, follow these steps
01
Navigate to pdfFiller website and login to your account
02
Click the Add New button and browse for a file you need to Compress Excel to Under 512kb, from the desktop or cloud storage
03
Additionally, search for a document from the file library, enter the document’s URL, or send it via email
04
If you already have the document you need in your account, simply go to My Documents and find it there
05
Click the Split option in the right-hand menu to Compress Excel to Under 512kb
06
Specify the pages you want to separate from the original file by clicking on them
07
Alternatively, divide the original file into several and specify which pages to leave in each
08
Add a title to each document
09
Click the Split button and wait for the process to complete
10
Select a destination for new documents and click Download Now
Compress Excel to Under 512kb Feature
Do you often struggle with large Excel files that are hard to share? Our Compress Excel to Under 512kb feature offers a straightforward solution. It reduces your Excel files without sacrificing important data or formatting. You can quickly share your spreadsheets via email, upload them to cloud services, or include them in presentations.
Key Features
Reduces Excel file sizes to under 512kb
Maintains data integrity and formatting
User-friendly interface for easy navigation
Fast processing, saving you time
Compatible with all Excel versions
Potential Use Cases and Benefits
Share large reports easily via email
Upload important spreadsheets to online platforms without hassle
Enable faster file transfers for collaborative work
Optimize storage space on your devices
Prepare documents for professional presentations
By using our feature, you solve the problem of large file sizes that can hinder communication and collaboration. You can now compress any Excel file swiftly, allowing you to focus on the content rather than the size. Experience seamless sharing and improved productivity.
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 Excel file size in VBA?
0) Delete any empty rows below your data.
0) Save the workbook with the macros disabled, then reopen and enable macros.
1) Export all VBA modules, close and then import them all again.
How do I reduce the MB size of an Excel file?
Do you want to know how to reduce your Excel file size?
First, audit your large Excel file.
Tip #1: Remove conditional formatting.
Tip #2: Crop each worksheet to its used range.
Tip #3: Remove unnecessary formulas.
Tip #4: Compress pictures in Excel.
Tip #5: Clear data formatting.
Tip #6: Delete watches.
Does VBA code increase file size?
way, it doesn't increase your existing file's size.
Why is my Excel file size so large?
Excel has a used range for every sheet in your workbook. The larger this is, the bigger the file size becomes. Especially in older files, even if cells are blank and have no formatting, Excel may be treating them inside the used range, leading to a larger file size for no reason.
What to do when an Excel file is too big?
Do you want to know how to reduce your Excel file size?
First, audit your large Excel file.
Tip #1: Remove conditional formatting.
Tip #2: Crop each worksheet to its used range.
Tip #3: Remove unnecessary formulas.
Tip #4: Compress pictures in Excel.
Tip #5: Clear data formatting.
Tip #6: Delete watches.
How do I reduce the size of an Excel file drastically?
Do you want to know how to reduce your Excel file size?
First, audit your large Excel file.
Tip #1: Remove conditional formatting.
Tip #2: Crop each worksheet to its used range.
Tip #3: Remove unnecessary formulas.
Tip #4: Compress pictures in Excel.
Tip #5: Clear data formatting.
Tip #6: Delete watches.
#1 usability according to G2
Try the PDF solution that respects your time.