Last updated on
Sep 20, 2025
Accelerate the way you Edit Font Size in PDF on Website 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
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:
This program makes my work so much easier, especially when working with multiple documents over and over again. Makes my life much easier also by saving me time. Thank you PDF Filler...........A++
2018-08-09
What do you like best?
It works. Easy to use platform. I've subscribed for several years and they continue to make improvements. I tried docusign and this was just as good.
What do you dislike?
I don't like that it won't link up with business accounts on OneDrive so I can't store my files on OneDrive. Really would be nice to have them fix that! Also for some weird reason, the system only can connect with personal accounts. Sometimes, it's not easy to find my documents. Finally, the plug-in for Chrome doesn't always work well. Usually, it's just better to go into the app itself.
Recommendations to others considering the product:
Compare the functionality you need to what it offers. I suspect you'll find it's sufficient.
What problems are you solving with the product? What benefits have you realized?
Send out paperwork for signatures and fill out paperwork online instead of printing, signing, and scanning it.
It works. Easy to use platform. I've subscribed for several years and they continue to make improvements. I tried docusign and this was just as good.
What do you dislike?
I don't like that it won't link up with business accounts on OneDrive so I can't store my files on OneDrive. Really would be nice to have them fix that! Also for some weird reason, the system only can connect with personal accounts. Sometimes, it's not easy to find my documents. Finally, the plug-in for Chrome doesn't always work well. Usually, it's just better to go into the app itself.
Recommendations to others considering the product:
Compare the functionality you need to what it offers. I suspect you'll find it's sufficient.
What problems are you solving with the product? What benefits have you realized?
Send out paperwork for signatures and fill out paperwork online instead of printing, signing, and scanning it.
2019-10-07
edit your PDFs as the best.
1.- It's Free. although there are some functions that are paid, for daily use just a free account which is very good.
2.- Pretty friendly and friendly interface. Everything is understandable and the use of the program is very easy to understand.
3.- Its use can be integrated with dropbox, googlr drive, box and onedrive.
3.- You can use files that are in your pc, your cloud or in some website (in this case you just have to enter the link).
4.- with the built-in editor you can add images, scratch, write in the text, delete sectors, hide words or paragraphs with black, add lines, and many other things.
5.- You can save your work in pdf, word, excel or powerpoint format. It also includes the option to send via mail, fax or simply share the link.
the bad thing, is that if or if you must register to use it, which perhaps is not something serious, but the program forces you to do so.
2018-11-07
Fill PDF easily
Filler software for life with the best features available to fill out pdf documents anywhere and anytime. The google docs addon save me a lot of time to fill out pdf's online and sending is easy after editing. Easy to use cloud based pdf editor which enhance productivity while I am working.
They don't have all language support. They should add more language support.
2018-09-24
The only problem is having to share my…
The only problem is having to share my feedback right in the middle of doing my work. Otherwise, great product!!
2021-12-06
Very helpful and insightful about the…
Very helpful and insightful about the documented material I was in search for and needed. Very well rounded amount of diverse material. Definitely will be a great and very useful tool when it comes to my business
2021-02-16
I enjoy the simplicity of converting file types and editing pdf's, and I would like to learn how to create form templates, like for resume's and tax forms etc.
2020-10-17
The application PDFfiller is excellent…
The application PDFfiller is excellent tool, I found the app very user friendly and their customer support is outstanding. I would highly recommend PDFfiller for anyone looking for a PDF editing tool at a very reasonable price point. Also, the app can be used virtually without limits as PDFfiller is a browser based solution, so as long as you have access to the internet you are good to go.
2020-06-29
Quick sign up, User friendly for beginners and love the functionality!!
What made my experience great is that it was simple and easy to use, I had only used docusign once before and decided to try pdfFiller for some court papers that needed electronically signed immediately. It is super user friendly. Great pricing after the 30 day free trial. But my favorite part is the set up and how many different things you can easily do!!!!
2025-05-10
Edit Font Size in PDF on Your Website
Transform the way you manage PDF documents with our feature that allows you to easily edit font size directly on your website. This tool offers a seamless experience for users looking to make adjustments to their PDFs without complicated software.
Key Features
Adjust font size effortlessly with a user-friendly interface
Preview changes in real-time to see how it affects the document
Compatible with various PDF formats for versatile use
No software installation required; work directly from your browser
Secure processing to protect your sensitive information
Potential Use Cases and Benefits
Enhance document readability for clients and stakeholders
Create customized presentations with tailored font sizes
Prepare educational materials that cater to diverse learning needs
Easily update marketing brochures for print or online distribution
Streamline workflow by reducing reliance on third-party applications
Our font size editing feature solves the common problem of rigid PDF formats. You can now modify text to meet your specific requirements, making documents more accessible and engaging. Enjoy the flexibility to create polished PDFs that capture attention and communicate effectively, all from your website.
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
Why can't I change font size PDF?
Go to “Tools” and “Prepare Form.” Then right-click the field with the font you want to resize. Click “Properties,” go to the “Appearance” tab and change the font size from there.
Why can't I change font size PDF?
Go to “Tools” and “Prepare Form.” Then right-click the field with the font you want to resize. Click “Properties,” go to the “Appearance” tab and change the font size from there.
How can I edit a PDF online with the same font?
How to edit a PDF file online: Drag and drop your PDF document into the PDF Editor. Add text, images, shapes or freehand annotations as you wish. You can also edit the size, font, and color of the added content. Click 'Apply' and save the changes and download your edited PDF.
#1 usability according to G2
Try the PDF solution that respects your time.