Last updated on
Sep 21, 2025
Highlight Formula and Note in PDF Online For Free
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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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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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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.
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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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What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
I hate handwriting forms. This is such a great alternative. I have been filing out piles of documents for an international adoption. They are neat and easy to read.
2014-06-29
I love this PDF editor. Two questions: 1. Do you have an off-line version? 2. Do you have a function to edit existing text instead of erasing the text?
2017-10-05
The conversion from Pdf to word was the smoothest I've seen. There are very few errors. AMAZING! After reviewing the document I noticed that the conversion dropped the letter F. If there were two f's in a word the conversion dropped one of them.
2018-04-13
What do you like best?
I used PDFfiller to complete PDF versions of scholarship applications and it was such a time savings and so easy to work with that it was worth every penny. Since that time I have found many more features, like the verified signing, that it has become a necessary tool for both work and personal use.
What do you dislike?
Not really anything I disliked. I think the price for a personal user is a little expensive.
What problems are you solving with the product? What benefits have you realized?
Verified signatures and completing PDF documents.
I used PDFfiller to complete PDF versions of scholarship applications and it was such a time savings and so easy to work with that it was worth every penny. Since that time I have found many more features, like the verified signing, that it has become a necessary tool for both work and personal use.
What do you dislike?
Not really anything I disliked. I think the price for a personal user is a little expensive.
What problems are you solving with the product? What benefits have you realized?
Verified signatures and completing PDF documents.
2019-08-22
PdfFiller review
It edits pdf that other application or websites cannot do.It is convenient to make multiple pdf documents.I like the idea that i can also sign any document using pdffiller.
The fact that you have to pay for it in order to use the free version.
2023-02-28
Cannot thanks Kara enough
Cannot thanks Kara enough. She went above and beyond to help me with my technical issues and spent a lot of time making sure I was happy and had what I needed.
2023-01-18
I recently started a trial account with…
I recently started a trial account with pdfFiller but it wasn't quite what I was needing. I didn't cancel the trial correctly so when my Debit card was charged I immediately contacted support and they resolved it within about an hour!
2021-09-13
I've just been persuing the many option PDF Fill offers regarding editing pdf documents and everything is clearly labeled, explained, and easy to use. I love the level of freedom and opportunities to customize almost every aspect of the pdf. They offer templates and make it seamless and very practical to make any form a pdf, and the attention to detail in providing you additional features and options to ensure quality presentation is awesome.
2021-02-01
What do you like best?
PDF is accessible and gives me the tools I need to edit, review and send docs. I like the ability to change my signature and erase as needed.
What do you dislike?
Sometimes erasing can be problematic, but nothing a little patience can't deal with. Would be nice to be able to erase large segments, sort of like making a large text box.
Recommendations to others considering the product:
It's great.
What problems are you solving with the product? What benefits have you realized?
Basically getting and sending signatures. Saves quite a bit of time and of course, the wait for something to get thru the snail mail.
2020-08-13
Highlight Formula and Note in PDF Feature
The Highlight Formula and Note in PDF feature enhances your document review process, allowing you to easily pinpoint important information and add notes for future reference. This tool transforms your PDF interactions, making them more effective and organized.
Key Features
Highlight text for easy reference
Add notes directly on PDF pages
Save and share annotated documents
Organize information for efficient study or work
Access highlights and notes anytime, anywhere
Potential Use Cases and Benefits
Students can highlight important passages and add study notes
Professionals can annotate reports and share insights with colleagues
Researchers can track details in documents for better analysis
Readers can mark key sections for easy review later
Anyone can enhance their PDF experience through clear organization and clarity
This feature addresses common challenges like losing track of important information in lengthy PDFs or struggling to remember your thoughts on specific sections. By allowing you to highlight and annotate, you gain control over your documents. With this tool, your PDF management becomes streamlined, helping you stay focused on what matters.
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 add fillable fields to a PDF for free?
2:11 6:22 How To Create a Fillable PDF Form For FREE! - YouTube YouTube Start of suggested clip End of suggested clip So here's mine i'm going to drag and drop it right here once uploaded you'll see your pdf. FileMoreSo here's mine i'm going to drag and drop it right here once uploaded you'll see your pdf. File right away like. So we are in the editor. Mode.
How do I highlight fillable fields in PDF?
For help you may press the F1 key while viewing a form. button in the upper right hand corner of the menu bar of the PDF form. After clicking this button the Fillable Fields within the form will be highlighted in a light blue color which will allow you to enter your information within these fields.
How do I add a fillable formula to a PDF?
To create fillable fields for formula, click on the Add Fillable Fields tab on the right. When the tab opens, you see different types of fields that you can add to your document. To add the Formula Field, select Formula. Drag and drop the selected field anywhere on the document.
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