Not understanding the content of a big book loaded with many equations and formulas is very common. In this paperless world, students love to read books in the form of PDFs. However, some customary PDF tools allow you to modify a PDF conveniently. With such tools, you can also annotate a book for better understanding.
Furthermore, if you have no idea how to annotate a PDF and which tool can help you with this, don't panic. This discussion is truly dedicated to an innovative tool named UPDF and its highly optimized annotation feature.
Part 1: Highlight the Key Points of The Book
Highlighting is one of the most known methods of annotating a book. Better understanding always comes with good highlighting. So, if you are reading an important book, always try to highlight important content for better understanding. No matter if you face difficulty while finding formulas or equations, with UPDF's annotation feature, all of them can be noticeable easily.
Now you must be wondering how you annotate a book. The steps listed here can help you a lot with this question:
Step 1: Launch UPDF and Import your Book
Initially, access UPDF on your device and open it. From the main interface of UPDF, click on the "Open File" button to open a PDF book. Then, select the eBook of your choice and import it into UPDF.
Step 2: Annotating a Books
Once the book is imported, click on the "Comment" icon from the left panel. Then from the options appearing above of PDF, select "Highlight." When the colors appear under its icon, choose the color of your choice and drag your cursor across the text you wish to highlight.

Step 3: Save Annotated Book
With UPDF, you can highlight as much content as you want. So, after highlighting, select the "File" tab from the above panel. From the listed menu, select the "Save" option to save the highlighted book.
Part 2: Use Color Coding to Annotate Book
The primary purpose of annotating a book is better understanding without any distractions. Just annotating a book with the same colors is not the best way to escalate productivity. Several tips help in a better annotation experience, such as color coding. Color coding means selecting a specific color for a particular type of information.
As UPDF supports many colors, so you don't have to worry about color limitations. However, if you don't know how to annotate a PDF book with color coding properly, this part will greatly help you. The below-given table will help you to understand the main use of some particular colors:
Green | Ideas, facts, and important concepts. |
Yellow | Need review, clarification, require more attention. |
Blue | Important notes, comments, insights. |
Red | Mistakes, errors, false information |
Orange | Dates, Names, places, events. |
Purple | Quotations and point of view. |
Pink | Reflection upon given information. |
Brown | Negligible information. |
Gray | Definitions. |
Black | Very important information, equations, and formulas. |
Part 3: Annotating Books with Sticky Notes
If you wish to add class notes to the book, there is no best way other than sticky notes. With the help of sticky notes, you can also focus on information that is worth reading at the last minute. No matter if it's definition, answers, or quotations, as long as it's noticeable, it can help you a lot. Annotating books with sticky notes is also very helpful in memorizing content.
Sticky notes are not just limited to physical papers, as you can also add digital sticky notes in a PDF. With UPDF, you can also experience annotating books for fun. In case you have no idea how to add notes in a PDF with UPDF, follow the steps listed here:
Once the PDF is opened, click the "Comment" icon from the left toolbar. From the annotation options, select "Sticky Note." You can also choose the color of sticky notes without any problem. After this, click on the place where you want to add a sticky note, and once the note appears, write on it.

Part 4: Write a Summary of The Book with The Typewriter Tool
Students mainly panic a day before the exam because there is so much syllabus to revise. However, the best way to eliminate this situation is to make a summary of every topic you've read. Get UPDF today, and you can revise a long topic in a short time without missing anything. Moreover, you don't have to write handwritten summaries of every topic, as UPDF has got you covered in this area.
In addition, it allows you to write summaries of any PDF using its typewriter tool. If you don't know how do you annotate a book by adding summaries, follow the instructions below:
Following this, the PDF will be opened. Afterward, select the "Comment" icon from the left side of the window and click on the "Text Comment" option. Select the font size, style, and color, and click on the page where you want to add summaries. Write whatever you wish to write without any limitations.

Part 5: More Annotation Tools You Can Use with UPDF
All the features in UPDF are very versatile and modern that can help you annotate a book for fun. The annotation features of UPDF are very intuitive and wide-ranging. With the help of this feature, you can not only highlight and add sticky notes in a PDF but also perform several tasks. For example, you can use strikethrough for cutting any unrequited text in a PDF to prioritize information.
Besides this, the underline and the squiggly line can help make critical information more notable. You can add comments anywhere in a PDF to give remarks using the text comment feature. For making PDFs more interactive, shapes come in handy. Use its pencil feature if you have some customized figure in mind that UPDF shapes cannot fulfill.
With the help of an eraser, you can easily erase all the unrequited illustrations. On the other hand, making PDF files more illustrative can be done by using stickers. There are many stickers by which you can express your emotions without saying much. By using these features, you will learn how to annotate books with tabs.

Part 6: Manage All Annotations of The Book
Folding and unfolding comments in a PDF is not a hectic take with UPDF. PDFs that are expected to be commented on can be highly optimized with this feature. If you have a commented PDF file but are unable to find a specific comment, go for the comment list feature. By this, you can jump to some specific comments without any hassle.
Moreover, you can also see the comment's name and time of comment. If there's a need to eliminate comments from a PDF, UPDF also allows you to delete the comment. Not only comments, but you can also delete other annotations in a PDF with ease.

Part 7: Why Choose UPDF to Annotate Your Book
You must be wondering why there are uncountable PDF annotators present on the web, but why should you choose UPDF? This section will satisfy this query. Primarily UPDF is one of the top-ranked tools on all major platforms. Its highly organized and easy-to-use interface has the power to convert users into clients.
Moreover, this tool does not target some specific modification parameters like annotations, as you can do more things with UPDF. To know more about some leading and impressive parameters of UPDF, move to the points discussed here:
1. Diversified Device Compatibility
Some PDF tools have irritable system requirements. It is not only an irritating thing but can also be a significant drawback of a tool. However, there is no such thing in UPDF, as it is compatible with several major operating systems. The devices that UPDF supports include Mac, iOS, Windows, and Android. Thus, you can annotate a book without worrying about its device compatibility.

2. Blazing Fast and Lightweight
The blazing fast process speed of UPDF plays an essential role in making it a highly recommended tool. With UPDF, you can perform any task without waiting for hours. In addition, UPDF is an offline tool, so you don't need to have good internet speed for its fast work.
No doubt that offline tools consume large hard disk space in a device, but it's not true in the case of UPDF. Its highly optimized and modern algorithms make it a lightweight tool.
3. Versatile Prevalent Features
There are diversified features in UPDF that can help you in multiple scenarios. For example, if you are unsatisfied with the font size and style, you can use its Edit feature. Moreover, if the PDF has illustrations and is challenging to share, use its Compress feature to reduce its size. With the help of Protection features, you can add an open and permission password in a PDF.
Other than this, filling forms and converting PDF into other formats is also a part of UPDF. It also allows you to OCR scanned PDF files and sign the official PDFs without any complication. In short, UPDF is the one-stop solution to all PDF-related problems.
Conclusion
Conclusively, annotating an ebook can help you understand the book without any issues; however, you have to use a third-party PDF annotator for annotating a book. The best PDF annotator on the market is UPDF because of several reasons. It also supports several annotating tools like highlight, underlines, sticky notes, and more. In addition to this, you can also convert, edit, organize, OCR, flatten, and compress PDF files with it.
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