Downsize PDF File Size to 15kb 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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Last updated on Dec 29, 2025

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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.

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What our customers say about pdfFiller

See for yourself by reading reviews on the most popular resources:
What do you like best?
I use Quickbooks and have to send out 1099NT which is not a capability in Quickbooks. 1099 forms must be scannable and I can purchase the printed forms and fill it out on PDFfiller. I can then print on the scannable forms and they are perfectly aligned. Saves time and money. Also, I like the fact that I can create a template so I don't have to re-type the same company information, tax numbers, etc. The product is easy to use.
What do you dislike?
I don't really dislike anything about PDFfiller. Other than maybe the fact that I probably don't use it enough to offset the cost.
Recommendations to others considering the product:
Easy to use - I intended to use for a month and then cancel, but I ended up keeping it.
What problems are you solving with the product? What benefits have you realized?
I mostly use for 1099NT's as mentioned above. I really need to explore!
Deborah Wade
2019-03-05
What do you like best?
I love the ability to make chanced to docs Ive already completed... and even changes to docs other have completed and sent me. Great Program!
What do you dislike?
Ive been using this for a few years and I have not found anything to dislike!
What problems are you solving with the product? What benefits have you realized?
Save paper! Save Ink! PDFfiller is helping Save the World :-)
Ryan Meltcher
2020-02-03
Only ever used Adobe in the past. Found this affordable option. It is fantastic. User friendly and effective app. I applied for a rental with a heap of forms to fill out and now our family are living in it. I accidentally signed the 1year subscription. Advised that I only wanted to use it during the trial period for a purpose and happy to pay for one month. They communication was quick and on point. They summarised and actioned exactly what I requested. Only charged me $30 for the month and cancelled my future subscription. I would happily use this again. Thank you.
Di T
2022-03-28
For the times i needed pdfFiller, it served me well,... For the times i needed pdfFiller, it served me well, but it is not that easy yet for me to use as I am not aware of all te the tools it provides me.
Gegham S.
2020-08-30
What do you like best? Easy to redact, sign and comment on documents. Great workflow What do you dislike? Only web-based interface. I would like a desktop version too. Recommendations to others considering the product: Use if you find DocuSign to be limited in editing functionality. What problems are you solving with the product? What benefits have you realized? Signing documents. Editing PDFs. Redacting sensitive documents. Easier than DocuSign.
User in Higher Education
2020-08-26
Honesty and integrity are not something… Honesty and integrity are not something I align with online trial subscription. Most will hope you forget so they can charge you anyway. But PDFfilIer holds to a higher standard. I am NOT an employee forced to write a review. This for real just happened like 10 minutes ago. I signed up for a trial to complete a job for my employer. Forgot to cancel before the trial ended. I don't make much, so $96 was a hit I wasn't expecting or able to pay. Support had already approved and completed the refund and cancelation of my subscription before I had even finished explaining my situation to the rep in chat (Aiden). The email came from "Sarah from PDFfiller" explaining that it was taken care of while I was still chatting with the rep. I was expecting a battle. Now I expect to either sign up with PDFfiller when I have a more consistent need or get my boss to pay for the service. The platform was quick and easy to navigate. Based solely on this experience, I would recommend this platform if you are in need of creating these types of documents. The only thing I would change is that I couldn't find my payment options in my account info to see what card was used. Nor could I find an avenue to change my payment options.
Fred Hoyle
2025-06-18

An easy-to-follow tutorial on how to Downsize PDF Size to 15kb securely

Every single byte is important 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 15kb so that you manage your documents with a more streamlined approach.

pdfFiller allows you to make files compact in just a few minutes. In addition, 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 15kb online

Follow these straightforward steps and discover how to securely change your file’s size online.

01
To start with, create or sign in to your pdfFiller account.
02
Hit the Add New button to import your document.
03
Upload your document by choosing the available document-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 want to split from the original file → hit Split.
07
Once processed, you can save your file to your online storage location or download it onto your computer.
08
Add an extra layer of security by setting a password. This option can be accessed in Manage documents menu.

If you’re stuck with your task and can’t proceed to Downsize PDF Size to 15kb, you can always rely on the professional support members.

In addition to the feature to Downsize PDF Size to 15kb, you can also benefit from a suite of other tools by pdfFiller that will make your document editing experience safer and organized. Modify, annotate and eSign and make your forms interactive with fillable fields. Additionally, we offer an extensive 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 editing documents from anywhere. Try our solution for your daily tasks!

Downsize PDF File Size to 15kb Feature

You need to share PDF files easily, but large sizes can cause delays and frustrations. Our Downsize PDF File Size to 15kb feature simplifies this process so you can share documents quickly and efficiently.

Key Features

Reduce file size to a manageable 15kb
Maintain document quality during compression
User-friendly interface for easy navigation
Quick processing time for instant results
Compatible with various platforms and devices

Potential Use Cases and Benefits

Share files via email without size restrictions
Upload documents to websites that impose size limits
Store more files on your devices by saving space
Improve file transfer speed for efficiency
Enhance collaboration by simplifying document sharing

This feature resolves your file-sharing challenges by letting you easily downsize PDFs. You can effectively share important documents without worrying about large file sizes. Experience the freedom of streamlined sharing with our powerful tool.

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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
To reduce the size of your PDF, open the file, then go to Convert > Compress. This will bring up a menu where you can choose the compression level, from smallest to largest (file size). At the smallest option, with file compression and image resampling set to 150 dpi, our 11,775MB file got compressed to 261.53KB.
In the Preview app on your Mac, open the PDF that you want to compress. Choose File > Export. (Don't choose Export as PDF.) Click the Quartz Filter pop-up menu, then choose Reduce File Size.
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.
Compress PDF to a Chosen Size Online 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.
PDF file usually comes with lots of graphics and images, which may make PDF file size quite large. While, large PDFs often bring troubles when we sending PDFs by email but with a size limit, or eat up too much space on our mac.

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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