Switch from Nitro to pdfFiller for a Annotate Scanned PDF Solution For Free

Use pdfFiller instead of Nitro to fill out forms and edit PDF documents online. Get a comprehensive PDF toolkit at the most competitive price.
Drop document here to upload
Select from device
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

Card illustration
Upload your document in seconds
Card illustration
Fill out, edit, or eSign your PDF hassle-free
Card illustration
Download, export, or share your edited file instantly

Switch from Nitro to pdfFiller in 4 simple steps

1
Sign up for free using your email, Google, or Facebook account.
2
Upload a PDF from your device or cloud storage, check the online library for the form you need, or create a document from scratch.
3
Edit, annotate, redact, or eSign your PDF online in seconds.
4
Share your document, download it in your preferred format, or save it as a template.

Experience effortless PDF management with the best alternative to Nitro

Create and edit PDFs

Create and edit PDFs

Instantly customize your PDFs any way you want, or start fresh with a new document.
Fill out PDF forms

Fill out PDF forms

Stop spending hours doing forms by hand. Complete your tax reporting and other paperwork fast and error-free.
Build fillable documents

Build fillable documents

Add fillable fields to your PDFs and share your forms with ease to collect accurate data.
Save reusable templates

Save reusable templates

Reclaim working hours by generating new documents with reusable pre-made templates.
Get eSignatures done

Get eSignatures done

Forget about printing and mailing documents for signature. Sign your PDFs or request signatures in a few clicks.
Convert files

Convert files

Say goodbye to unreliable third-party file converters. Save your files in various formats right in pdfFiller.
Securely store documents

Securely store documents

Keep all your documents in one place without exposing your sensitive data.
Organize your PDFs

Organize your PDFs

Merge, split, and rearrange the pages of your PDFs in any order.

Customer trust proven by figures

pdfFiller is proud of its massive user base and is committed to delivering the greatest possible experience and value to each customer.
740K
active users
239
countries
75K
new subscribers per month
105K
user reviews on trusted platforms
420
fortune 500 companies
4.6/5
average user rating

Get started with
an all‑in‑one PDF software

Save up to 40 hours per month with paper-free processes
Make quick changes to your PDFs even while on the go
Streamline approvals, teamwork, and document sharing
Decoration
G2 Badge
G2 recognizes pdfFiller as one of the best tools to power your paperless office
4.6/5
— from 710 reviews
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025
Best Support - Summer 2025
Easiest Setup- Summer 2025

How to Annotate Scanned PDF

1. Standard text boxes — included in a document where it is convenient and suitable;

2. Sticky notes — attached over the content of a document

With pdfFiller functionality, not only can you fill out and edit PDFs and other types of text documents, but you can also annotate scanned PDFs and guide recipients through a document’s content. Alternatively, notes are helpful in terms of your own revisions to a document. pdfFiller has two types of note tools: To comment using a text box, select Text Box in the toolbar and click where you'd like to place the box in the document. To resize a text box, drag its corners or edges. To change the color of its border, click the color icon that says Box in the formatting toolbar and select the color that you want. To change the color of the box itself, click Background and choose the color:

Image

To enter text in a box, click inside and start typing. When you annotate a scanned PDF file, you can change the font type of the note. Simply click the box with the current font name in the formatting toolbar and choose from the dropdown menu. You can change the font size by clicking the number next to the font and selecting from the dropdown list. To underline your text, make it bold or italicized, use the U, B, and I icons. To change the text color, click the color box on the right of the font tools and select the color you want:

Image

To add annotations to a PDF scan in a sticky note, while in the editor, select Sticky:

Image

Click where you'd like to place the note while adding annotations in PDF files. To resize the note, drag its corners or edges. To change its color, click the yellow icon that says Box and select the color you want. To enter your comment, click inside the note and start typing. You can format your text using the above-mentioned tools:

Image

In addition, you can easily remove a sticky note or a text box from the document. To do this, just click it and then click the trash icon:

Image

How Do I Make Notes on a PDF?

01
To make notes on a document open it in the editor.
02
Click Text Box to include text inside the box.
03
Move the box around the document and format the included text as necessary.
04
Alternatively, click Sticky in the toolbar.
05
Move the sticky around the document and format the included text as necessary.
06
Click Done to save the notes.

pdfFiller is different from and not affiliated with Nitro. With further questions about Nitro products please contact Nitro directly.

Our user reviews speak for themselves

Read more or give pdfFiller a try to experience the benefits for yourself
5.0
No issues once I contacted the support department who answered my questions. I understand that you are in business to make money on a service. I just felt it was costly for a piece of paper or two that would cost me 10. Cents at a FedEx or Office Max type business.
Jose F
5.0
What do you like best?
I like how intuitive PDFfiller works compared to using a typical graphic design application to fill out PDF forms. PDFfiller does a good job at understanding how to format common documents and makes it easy for me to download files after filling them out. I think that the pricing for PDFfiller is very reasonable and the website is designed very professionally.
What do you dislike?
I have been able to use PDFfiller very smoothly in the time that I've used it, but it's not always perfect when it comes to formatting certain documents. I think they are improving all the time though.
Recommendations to others considering the product:
I would recommend PDFfiller for filling out digital documents, for sure. I think if you compare it to other cloud-based software tools, you'll see that it can work more smoothly with your workflow in many cases.
What problems are you solving with the product? What benefits have you realized?
We work with lots of digital documents, and since it can take a long time to fill them out through printing, writing and scanning, PDFfiller really helps to streamline the document filling and signing process. Everyone on our team that uses PDFfiller was able to start using it without problems pretty quickly.
Matthew Matthew

Get documents done
from anywhere

Create, edit, and share PDFs even on the go. The pdfFiller app equips you with every tool you need to manage documents on your mobile device. Try it now on iOS or Android!

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
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.
Free OCR provides a simplified way to edit scanned document online for free. It is very easy to use, all you have to do is upload the document and then click on “Start”. The program will then extract the text from the image PDF and display it in TXT format. You can then simply edit the text.
Open the scanned PDF file in Acrobat. From the All tools menu, select Edit a PDF. Acrobat automatically applies OCR to your document and converts it to a fully editable PDF copy. Select the text element that you want to edit and start typing.
Open your PDF document with Adobe Acrobat Reader. Click on the Comment or Review tab on the right side of the window. Select the annotation tool you want to use (e.g., highlight, underline, text comment, sticky note). Click or drag your mouse to annotate the text or area of the PDF where you want to add the annotation.
Open a PDF in Acrobat and select the Comment tool. Add PDF annotations to your file. You can add text boxes and sticky notes, underline text, strikethrough content, highlight text, and more.
Tool choose where you'd like it to be placed. And enter the comment. To view a summary of yourMoreTool choose where you'd like it to be placed. And enter the comment. To view a summary of your comments open the comments pane on the bottom left corner of the window.
How Do I Make Notes on a PDF? To make notes on a document open it in the editor. Click Text Box to include text inside the box. Move the box around the document and format the included text as necessary. Alternatively, click Sticky in the toolbar.
If you want to alter, enhance, or otherwise adjust a scanned image or document, look under the Edit menu to find these options: Rotate & Deskew Page Automatically detect and adjust rotated or skewed pages before or after OCR.
Join 64+ million people using paperless workflows to drive productivity and cut costs