Last updated on
Dec 29, 2025
Edit your PDF and compress it directly within the editor. Choose from high, medium, or low compression levels to balance quality and file size according to your needs.
Reduce 21 mb Excel File to 15 mb with pdfFiller
How can you reduce a 21 mb Excel file to 15 mb?
To reduce a 21 mb Excel file to 15 mb, you can use pdfFiller's online compression tool, which allows you to effectively manage your document size. Simply upload your Excel file, choose the compression level, and download the optimized version.
What is an Excel file?
An Excel file is a spreadsheet file created with Microsoft Excel or similar applications used for organizing, formatting, and calculating data. These files often contain a dataset in rows and columns, facilitating various data analysis tasks. They are commonly used in business environments for financial calculations, inventory tracking, and data reporting.
Why is reducing a 21 mb Excel file to 15 mb essential for document management?
Reducing an Excel file from 21 mb to 15 mb is crucial for several reasons including improved sharing capabilities, quicker upload times to cloud services, and reduced storage space usage. Smaller files are more manageable, making collaboration easier, especially when working with email attachments or shared networks.
What are the key features for reducing a large Excel file?
pdfFiller offers several key features for reducing large Excel files, including simple drag-and-drop file uploads, customizable compression settings, and batch processing capabilities. These features ensure users can efficiently manage numerous files without compromising quality.
What file formats does pdfFiller support for reduction?
pdfFiller supports a variety of file formats for size reduction, including XLS, XLSX (Excel), PDF, DOC, DOCX (Word), and more. This versatility allows users to work with multiple file types while ensuring compatibility across different platforms.
What compression levels and customization options are available?
When using pdfFiller, users can choose from different compression levels, ranging from low to high. This allows for a balance between file size reduction and document quality preservation. Additionally, users can customize settings for the degree of optimization required based on their specific needs.
How can you handle batch processing for large volume reductions?
To efficiently reduce multiple files, pdfFiller offers a batch processing feature that lets users upload and compress several Excel files simultaneously. This feature streamlines the process, especially for teams managing large datasets, saving time and effort.
How to use pdfFiller to reduce a 21 mb Excel file to 15 mb: step-by-step guide
Follow these steps to reduce your Excel file size using pdfFiller:
-
Visit the pdfFiller website and log into your account.
-
Upload the 21 mb Excel file you wish to reduce.
-
Select the 'Compress' option and choose your desired compression level.
-
Click on 'Run Compression' to begin the process.
-
Download the resulting 15 mb file once the compression is complete.
What are the benefits of reducing an Excel file via pdfFiller?
Using pdfFiller to reduce Excel files offers several benefits, such as simplified document management, enhanced collaboration capabilities, and improved file transfer speeds. Additionally, retaining high-quality document integrity while achieving size reduction is essential for professional presentations and reports.
What industries and use-cases benefit from file reduction?
Various industries can benefit from Excel file reduction including finance (for budget forecasting), education (for student data management), and logistics (for inventory control). Teams frequently require compressed files to facilitate collaboration and efficient communication across projects.
How does pdfFiller compare to alternatives for file reduction?
While there are alternative tools available for reducing file sizes, pdfFiller stands out due to its seamless integration of additional functionality like document editing, e-signatures, and advanced collaboration tools, all in one platform.
What are the key takeaways regarding file size reduction?
Reducing a 21 mb Excel file to 15 mb using pdfFiller is an efficient way to optimize document management. By leveraging pdfFiller’s strong capabilities, users can effortlessly reduce file sizes without sacrificing quality, making it a smart choice for individuals and teams.
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
Compress, edit, sign, and manage documents from a single solution
Compress and edit PDFs in one place
Equip yourself with powerful PDF tools
Edit PDFs online almost as easily as Word documents. Add text, adjust formatting, replace content, insert images, and more. pdfFiller has all you need to get your documents done from start to finish.
eSign and send documents
Sign documents on your own or send them to others for signatures, whether a single recipient or an entire group. You can assign roles, manage the signing order, set reminders, and request additional authentication.
Annotate and collaborate
Highlight important data, redact sensitive details, add sticky notes, and exchange comments in your PDFs. Then, instantly send documents for review or editing. You can also share files and folders with your team to boost collaboration.
Organize and manage PDFs
Merge, split, rearrange, and convert PDFs into formats like DOCX, XLSX, JPEG, PNG, and PPTX. Secure your documents by locking them with a password or placing them in an encrypted folder.
Secure files in the cloud
Organize your documents and templates in secure cloud storage and access them from anywhere. pdfFiller follows strict security regulations such as GDPR, HIPAA, PCI DSS, SOC 2 Type II, and others to help safeguard your data.
How to compress your PDF?
1. Upload your document
Upload a document from your device, cloud storage, email, or URL.
2. Open a document in the editor
Edit your document and click the Compress button in the top menu panel.
3. Set compression parameters
Select the file format, destination, and compression level, then hit Save.
Who needs this?
Explore how professionals across industries use pdfFiller to compress PDFs
Education
Teachers and administrators can reduce file sizes for effortless sharing with pdfFiller’s compress feature, and enhance collaboration between students and educators with pdfFiller's tools designed for seamless collaboration.
-
Lesson plans
-
Student enrollment forms
-
Class schedules
-
Permission slips
Real Estate
Real estate agents and brokers compress PDFs to quickly share documents with clients and colleagues via email attachments or a link. They also use pdfFiller to customize templates, ensuring everything is consistent and error-free.
-
Property listing brochures
-
Lease agreements
-
Sales contracts
-
Property management forms
Healthcare
Healthcare professionals use pdfFiller to create, fill out, and compress PDFs for secure document sharing and faster uploads to patient portals. Sending forms via links or embedding them on websites simplifies data collection and improves the patient experience.
-
Patient intake forms
-
Appointment schedules
-
Prescription forms
-
Consent forms
Finance
Financial analysts and accountants use pdfFiller to create, customize, and share financial documents. With the PDF compress feature, finance professionals can quickly convert documents in the right format, share and conveniently store them in the cloud.
-
Financial statements
-
Tax forms
-
Invoices
-
Expense reports
Sales
Sales teams use pdfFiller’s compress feature to easily share proposals and contracts with clients. Sharing documents via link or email helps speed up communication, close deals faster, and boost productivity.
-
Sales proposals
-
Quotation forms
-
Order forms
-
Customer feedback surveys
Insurance
Insurance agents use pdfFiller to edit and compress documents like policy files, claims forms, and client onboarding materials for easy sharing and secure storage. With pdfFiller, they can share insurance documents via link or email to get them signed in seconds.
-
Insurance policy documents
-
Claim forms
-
Risk assessment reports
-
Client onboarding documents
Why compress documents with pdfFiller?
Optimize quality at the right file size
pdfFiller offers three compression settings and shows the estimated file size. Need a smaller file? Simply bump up the compression level.
Convert & compress in one go
Convert your PDFs to Word, Excel, PPT, JPEG, or PNG and compress them in one step. This lets you get documents in the right format and size without juggling multiple tools.
Export & share with ease
Download your compressed file, send it directly to cloud storage, or share it with others in seconds. With pdfFiller, you don't have to manually move files whenever you need to compress or convert a document.
pdfFiller scores top ratings on review platforms
When I started searching for a PDF to Word doc. a few days back, I downloaded 4 different trials and hated all of them!! They were not user friendly like this one is!! To anyone reading this, DO NOT waste your time researching other apps, you will not find anything better then this one! I would absolutely recommend PDFfiller to anyone who is reading this!!... and so will you.
I never got the code in my email to complete the emailing of the document to the tenant. Other than that I love the ease of using it. I hope to get help with emailed code soon.
I guess a better comment today would be that I'm still trying to master the filler prompts etc so I have been getting lost and don't know for sure what to do, but I did do bette
Very easy to navigate and use
Very easy to navigate and use. The plan is very much worth it if you plan to use and print a lot of documents. I would highly recommend using PDF filler for all of your personal and legal documents.
What do you like best?
Not much not to like. Spell checker would be nice. though.
What do you dislike?
After creating a document and saving it, it landed back in the template folder. Have to switch over to documents to access
What problems is the product solving and how is that benefiting you?
Editing PDF DOCs. Ability to search works great.
mostly good. Had trouble one day but it looked like it was site-wide. It was fixed by the next day. Would like to better understand how to capture documents and transfer to other files etc.
Satisfied but no longer need service
I have been satisfied with the subscription and have used it with my work, however I am retiring the end of September and will no longer need this subscription
I have used pdfFiller multiple times…
I have used pdfFiller multiple times and love their product. I primarily use it when applying for jobs and need a pdf converter to fill out applications. I like that I can just subscribe for the time I need the program and then cancel it. I also like that all my documents are saved to my account even after I cancel the service. I can just resubscribe and pick up where I left off. Customer support is EXCELLENT. Highly recommend pdfFiller.
Adapting from working home, I needed to make forms fillable to get signatures and this service was exactly what I needed!
Even after I forgot to cancel my subscription after the free trial, their customer support was auper responsive and able to refund the autopayment.
Thank you!
Watch our PDF compress in action
Check out a quick video tutorial that shows how to compress any file into an editable PDF in three easy steps.
What businesses achieve with pdfFiller
Discover how you can benefit too.
How do you reduce the MB size of a photo in Excel?
With your file open in your Microsoft Office application, select the picture or pictures that you want to compress. Under Picture Tools, on the Format tab, in the Adjust group, click Compress Pictures.
How do I reduce the MB size of an Excel file?
You can reduce your file size by saving your spreadsheet as a binary workbook (.xslb) instead of the default format (.xslx). The default format is XML based, which is important if you're using your data with third-party programs because XML is an open standard.
How do I reduce the MB size in Excel?
You can reduce your file size by saving your spreadsheet as a binary workbook (.xslb) instead of the default format (.xslx). The default format is XML based, which is important if you're using your data with third-party programs because XML is an open standard.
How do I compress a 100 MB Excel file?
This can be done by right-clicking the Excel file and choosing “Compressed (zipped) folder” under the “Send to” tab.
How many MB is too big for Excel?
50 megabytes (MB) default. 2 gigabytes (GB) maximum (2)