Switch from Adobe Acrobat to pdfFiller for a Add Sign PDF Solution For Free

Use pdfFiller instead of Adobe Acrobat 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 Adobe Acrobat 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 Adobe Acrobat

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 Add Sign PDF - Adobe Acrobat - video instructions

Our user reviews speak for themselves

Read more or give pdfFiller a try to experience the benefits for yourself
4.0
It was just what i was looking for...im not very computer literate but WAS NOT hard to learn. I do think a few features could be added or made easier. I WAS NOT HAPPY WITH THE COST. Its mighty ridiculous! For the amount of money i spent and the length of time... S***, unless you are in the business of "screw ups" "uh-oh"ers, the presidents Secretary for his twitter account...or a lawyer. I don't think you get enough time for the cost. And VERY UNSATISFIED with the small print that is located UNDER the nice AFFORDABLE FAKE SALE PRICE at the beginning of the website
Tiff N
4.0
This app has been very helpful in tracking various forms and schedules in one place. I couldn't always access a particular form but generally, this was a great way to do a one-stop-shop for tax forms.
Anonymous Customer

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
See how to sign a PDF From the Quick actions toolbar, select. To add a signature, select Add signature. In the dialog that appears, type or draw your signature and then select Done. To add your initials, select > Add initials. In the dialog that appears, type or draw your initials and then select Done.
If you don't download the PDF before signing, it is likely that your signature will not be properly saved. Open the PDF you wish to sign in “Preview”. Select the “Show Markup Toolbar” option. Select the “Show Markup Toolbar” option. Select the “Signature” icon.
Open the PDF file in Adobe Acrobat Reader. Click on Fill & Sign in the Tools pane on the right. Click Sign, and then select Add Signature. A popup will open, giving you three options—Type, Draw, and Image. Open the PDF file in Adobe Acrobat Reader. Click on Fill & Sign in the Tools pane on the right.
File icon and you add it you will click on the addition symbol and you open the file manager youMoreFile icon and you add it you will click on the addition symbol and you open the file manager you find your relevant file and you simply add it once you have done that you save your pdf.
How to add a signature to a PDF Open the PDF file in Adobe Acrobat Reader. Click on Fill & Sign in the Tools panel on the right. Click Sign, and then select Add Signature. A popup will open — Type, Draw, and Image. Select one and click Apply. Drag, resize and position the signature inside your PDF file.
How to add a signature to a PDF. Open the PDF document in Acrobat. Click Fill & Sign on the left-hand side or click E-Sign at the top. The specific functions will be displayed in the toolbar. Hover the mouse over the desired form field to manually sign or add your text.
Using the Type tool, click to place the insertion point where you want to enter a character. Choose Type > Glyphs to display the Glyphs panel. To display a different set of characters in the Glyphs panel, do any of the following: Select a different font and type style, if available.
To sign a document using Adobe Reader, first open the PDF document in the Adobe Acrobat Reader DC application. Click the “Fill & Sign” button in the right pane. Click the “Sign” button on the toolbar and select “Add Signature” to add your signature to Adobe Acrobat Reader DC.
Join 64+ million people using paperless workflows to drive productivity and cut costs