Annotate PDF Online

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How To Use Online PDF Annotator?

Upload & Edit Your PDF Document
Save, Download, Print, and Share
Sign & Make It Legally Binding

Easy-to-use PDF software

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What is Online PDF Annotator

It allows you to add PDF text or annotate and add markup and comments directly to PDF pages.

PDF Annotator Overview

Today more and more people take advantage of creating and filling digital documents. They are much easier to handle in comparison with their hard copies. The scanned files in PDF are always at hand on your device that gives you an opportunity to send and share them even when on the go. Preparing some forms you may have questions to a particular section or may want a feedback from a recipient. For this purpose you should leave a comment near a certain piece of the content. In the past you probably had to print out a paper and write comments by hand. However, today there are multiple streamlined editors that allow you to annotate your files online. Find out how to use them referring to the short guide below.

Choose the Best PDF Editor for Annotation

Nowadays there is a great deal of different editing tools. However, we offer you to take advantage of online services which are very convenient and user-friendly. You don't have to download any additional applications to annotate. Moreover, they are available for any device, such as a computer, smartphone or tablet. You can comment your text effortlessly anytime and anywhere. The only thing you need is a good internet connection. Most of such digital services can be applied for free. Just upload your PDF sheet to the account and start working with it.

Common Steps to Add Comments to PDFs

If you opt for digital tools, the process of adding annotations will be a breeze for you. The procedure requires only a few easy steps:

  • upload your PDF paper to an account;
  • choose what you want to add, i.e. a text box or a sticky note;
  • then click where you need to type your comment;
  • change the font style, color and size, if necessary.

You also have an ability to resize your text boxes and sticky notes. For this you just need to drag their edges or corners.

There are plenty of tools offering an easy way to convert PDF to other formats. However, “easy” does not always guarantee that the output file will be of high quality. Our solution combines ease of use and excellent performance. Here is how you can check it.

How to process PDF easily and efficiently with Online PDF Annotator

  1. Add, upload, or export a document to the platform.
  2. Note, you can make changes to the content of the document regardless of the initial upload format.
  3. Make edits to the text: change, replace, or delete it.
  4. Annotate the content: highlight text, add sticky notes, arrows, and blackout specific areas.
  5. Add graphics, shapes or add drawings by using a drawing tool.
  6. Use Online PDF Annotator to watermark and password-protect your document before choosing PDF as an output format.
  7. If you convert to PDF, you can make it more entertaining by adding fillable fields.
  8. Download, send or share your document in a flash.

File processing is only a small fraction of the entire arsenal of features our solution includes. If you’re working with PDF files daily and need an extensive set of features to facilitate your document workflow, the Online PDF Annotator will be your best fit.

What's Included?

  • Redact & review PDFs online
  • Convert files to and from PDFs
  • Fast & Secure
  • No Downloads. No Installations. Try Now!

Customers love our service for intuitive functionality



46 votes

Modify files quickly

Moreover, it helps you add texts into fillable forms, and you can draw personal signatures to the PDF with ease for i OS 14/13. This editing tool lets you revise and make changes to your PDF document at any place.

Step 2. Tab on the Annotation Tools to Annotate PDF When you open the PDF file in the program, tap on the "Pencil" icon on the left of the screen. From there, look at the bottom menu bar to find markup tools like Highlighter, Sticky Note, Typewriter, Pencil, Shape, Stamp, and so on.

Lastly, the app is easy to use, and it utilizes functions such as undo and redo. 5. i Annotate PDF has an intuitive interface and comprehensive features that allow you to annotate manage and share files from your i OS device.

What people say about us

james espinoza
good good work and i like how everything is easy to use
Jeffrey P.
pdf filler was kinda a letdown 3/5 it was cool and yea sometimes know when to say no I use it for specific content for signature and pdf just didnt like the feel of the software so im moving on
Michael W
Amy C
User friendly and straight forward

Why Choose Online PDF Annotator

A comprehensive toolkit
Turn a static PDF into an interactive document for real-time collaboration. With a full-featured web-based solution, you'll get everything you need to professionally manage documents, search, store, and audit tax forms, and share templates. Efficiently annotate, create reusable templates, or collect data and payments in minutes. Choose the right solution for you.
Easy cross-platform access
Forget about finding tangled spreadsheets, long email streams and chat histories, and dozens of document folders on your computer. Store all your work documents, files, tax forms, contracts in a single secure workspace. It not only saves you time but also greatly increases your productivity. Access your account on any device and PDF annotator even when you're on the go.
First-rate security
Annotation generator and manage PDF forms online with a few clicks. Solve your document issues with a comprehensive online solution, then use our detailed Audit Trail with document history to visualize the process in an easily digestible format. We champion our users’ freedom to access a safe and secure account. Check how our solution helps keep information and documents secure.
Quick and qualified support
Contact our world-class support team with any questions you’d like to discuss, create a ticket when you need it, 24/7. We’ll answer as soon as possible and do our best to help you out. For product inquiries, technical support, and other questions on document management, we aim to provide excellent customer service. Today, you can focus on how to annotation tool more efficiently.
Two-minute document signing
Upload documents and files directly from your device or cloud, then annotate PDF, drag and drop the Signature field where you need it on the page, and sign a form in a minute. With our editor, you can take all the advantages of a legally-binding eSignature tool without any additional payments. Self-sign, send out for signing, and collaboratively approve contracts in real-time.
User-friendly interface
Ultimately, this user-friendly editor has an interface that is intuitive, visually engaging, and highly customizable. It helps you to PDF annotation tool in seconds, automate tedious routine tasks, and enables easy access to your documents from virtually any device. Delivering a genuine usability experience is a crucial goal of all our development and design teams’ initiatives.


How do I annotate a PDF online?
To add an annotation in PDF, upload your document to PDFfiller, or choose the document your want to annotate in "My Forms" page and click "Fill" button. You can highlight text or add comments, sticky notes or underlines in your PDF document, application form, license form, contract document or certificate file online.
How do I annotate a PDF document?
Add Sticky Notes. Click "Comment" "Note", and then click on the location where you want to add comments. Highlight, Underline, Strikethrough. Click "Comment" "Highlight", then select the text you want to highlight. Add Text Box. Foxit Reader. PDF-XChange Viewer. Nitro Reader. Notable PDF.
How do I fill out a PDF form online?
Fill in flat forms in a browser Save the form on your computer, and then open it directly in Online PDF Annotator or Online Pdf Annotator Reader. For instructions, see Fill out your PDF form. Save form, open in Online PDF Annotator or Online Pdf Annotator Reader, and then choose Tools Fill & Sign.
How do I fill out a PDF electronically?
Within Online Pdf Annotator , open a PDF file or click on the Create PDF tool in the right pane to convert your document to PDF. Click on the Fill & Sign tool in the right pane. Click on a text field, then type on the form to add text. Click Sign in the toolbar at the top of the page.
How do I type into a PDF document?
Open a PDF document in Online Pdf Annotator Reader. Click on Tools. Click on Fill & Sign. Click on the "Ab" icon in the top-middle of the window. Click on the place in the document where you want to add the text. Adjust the text size. Click on "Type text here" in the dialog box.
How do I fill out a document online?
Sign up for a Yellowing account. Enter in your email address and a password or connect your Google account. Upload your document. Choose the PDF you need to fill out and upload it to your account. Format and fill out the document. Insert your eSignature. Download a copy of the completed copy.
How do I add comments to a PDF document?
Choose Tools Text Tool. Choose Notes Text Note. Drag in the document until the note is located where you want and has the size you want. To enter text, double-click the note.
How can I add comments to a PDF?
Suggested clip Marking Up And Adding Comments To PDF Documents.mp4 YouTubeStart of suggested clipEnd of suggested clip Marking Up And Adding Comments To PDF Documents.mp4
How do you add comments in Online Pdf Annotator Online Pdf Annotator Pro?
Suggested clip Online Pdf Annotator Pro DC Tutorial Adding Comments - Online Pdf Annotator - YouTubeYouTubeStart of suggested clipEnd of suggested clip Online Pdf Annotator Pro DC Tutorial Adding Comments - Online Pdf Annotator - YouTube
How do you add something to a PDF?
Open your PDF document. Right-click in the PDF, and select Insert Pages from the right-click menu.