Last updated on
Jan 16, 2026
Resize Highlight Pdf 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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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
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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:
editing document is fine. Underlining is hard to figure out. Simply saving for future use (not exporting) is not clear but I stumbled on a solution that I hope will work.
2016-10-02
Needed a pdf editor, so found this one quickly on google. Expected to edit one document and then cancel my subscription. Edited many more. Wish I had this for the last two years I've been in school. Great Product! Will recommend.
2017-05-31
At first, not good....too expensive for a one time use. Sarah's response was great and her instructions were, too. She convinced me to use the program gratis to see how it works. It was fantastic.
2018-05-11
What do you like best?
The program is very quick and easy to use. Uploads your documents very fast. You can type or alternate any pdf or word file. It saves it in no time. You can go back and look at any file you have uploaded. Everything is saved. I also love the fact I can use it on my phone as well through the app. It is extremely convenient. I can fill out new vendors forms very quick which saves me time.
What do you dislike?
I haven't come up with any problems for as long as I have used it...over 2 years now.
What problems are you solving with the product? What benefits have you realized?
It saves me a lot of time. It is a very convenient and fast way to fill out forms or alternate them. Adding a signature on any form is so easy to do through pdffiller. I don't have to print the form, chase my husband to sign, scan it and then email it. Imagine just uploading your form, adding the signature which is already saved and you're DONE :D
The program is very quick and easy to use. Uploads your documents very fast. You can type or alternate any pdf or word file. It saves it in no time. You can go back and look at any file you have uploaded. Everything is saved. I also love the fact I can use it on my phone as well through the app. It is extremely convenient. I can fill out new vendors forms very quick which saves me time.
What do you dislike?
I haven't come up with any problems for as long as I have used it...over 2 years now.
What problems are you solving with the product? What benefits have you realized?
It saves me a lot of time. It is a very convenient and fast way to fill out forms or alternate them. Adding a signature on any form is so easy to do through pdffiller. I don't have to print the form, chase my husband to sign, scan it and then email it. Imagine just uploading your form, adding the signature which is already saved and you're DONE :D
2019-05-21
PDF FILLER
Overall, GREAT structure platform, user friendly have cool tools.
GREAT structure platform, user friendly have cool tools and variety of options and the great part is online.
A get to much error on conversion files from one format to another. Also having some issues with saving the files to my desktop.
2020-01-14
best document management program
I truly enjoy using this product. It is easy to manage my document and add items.
none. product is perfect for the uses i needed.
2022-11-14
It is really good
It is really good, I hate forms, who doesn't but this made the chances of my cat getting kicked much smaller.
No animals were hurt in the making of this review.
2021-12-07
Great product -- easy to use -- should…
Great product -- easy to use -- should format items so that numbers can appear with commas already populated -- but great product.
2021-01-21
Great customer service and solid product.
I don't usually leave reviews, but this product deserves my time.
Works very well in filling PDFs. Typing, checking boxes (using the checkmark or "x" feature), filling out tables, etc. Saving and editing again works well, though it isn't entirely intuitive the first time.
Customer service was absolutely awesome! I realized, after signing up for a paid subscription, that I no longer needed the service. I cancelled online (or THOUGHT I did), but I must've had a glitch. When I got billed, I called and they issued me a refund no questions asked and zero hassle.
Customer service was incredibly helpful. Product was great for filling out multiple long pdfs that only had slight variations (saved a copy and changed only the fields that I needed). Easy to use and quick to learn.
I cancelled my subscription only because I realized I wouldn't be using it enough to justify the cost. Life changes!
2020-09-01
Resize Highlight PDF Feature
The Resize Highlight PDF feature transforms the way you interact with your documents, making it easier to focus on what matters most. Whether you need to adjust the size of your highlighted sections or fit them neatly within your workspace, this feature provides a seamless solution.
Key Features
Adjust highlight sizes easily for better visibility
Support for multiple file formats, including PDF and image files
User-friendly interface for quick editing
Maintain original content quality after resizing
Save and share customized highlights effortlessly
Potential Use Cases and Benefits
Teachers can emphasize important texts in study materials, enhancing student engagement
Business professionals can highlight key information in reports, making presentations clearer
Students can resize highlights to stay organized, improving study efficiency
Marketers can showcase vital data in promotional materials, increasing viewer interest
Researchers can draw attention to significant findings, facilitating easier reviews
This feature solves your problem of managing overwhelming amounts of text. By allowing you to adjust the size of highlights, you gain control of your documents. You can easily prioritize information, making it simpler to extract essential points. With the Resize Highlight PDF tool, you enhance your productivity and ensure that your important notes stand out.
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 you change the highlight on a PDF?
Open any PDF document, go to menu View → Comment → Annotations, right-click on the “Highlight text” tool, choose “Tool Default Properties” and you will be able to change its default color.
How do I highlight an area in PDF?
Highlight your PDF Left-click the mouse, hold it, and move around the page to highlight the area or text. Release the mouse button once the area or text is selected. Once the PDF is highlighted, you have the option of adding a description to each annotation, which you can do from the left vertical panel.
Why can I highlight some PDFs and not others?
Most likely because the file is composed of images (possibly scans) and does not contain any “real” text. If you can't select the text with the text selection tool then you can't highlight it, either. Use other markup tools, like the Square tool, instead.
Why won't my PDF Let me highlight?
Most likely because the file is composed of images (possibly scans) and does not contain any “real” text. If you can't select the text with the text selection tool then you can't highlight it, either. Use other markup tools, like the Square tool, instead.
How do I enable highlighting in PDF?
Highlight PDF Text Go to the “Comment” tab and select “Highlight”. Use your cursor to select the text you want to highlight. If you are looking highlight a large area of text, you also have the option of using the “Area Highlight” Button.
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