Switch from Nitro to pdfFiller for a Modify Sign 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
Trust Seal
Trust Seal
Trust Seal
Trust Seal
Trust Seal
Trust Seal
Trust Seal
Trust Seal

Video Review on How to Modify Sign PDF - Nitro

Our user reviews speak for themselves

Read more or give pdfFiller a try to experience the benefits for yourself
4.0
I was extremely happy with PDFFiller until I took an entire 2 hours worth of notes on a pdf and the website froze when I tried to save it. And then lost it all with no recovery option.
Anne
5.0
When I first started using PDFfiller (couple of years ago) I wasn't impressed with it - it could have been because of a lack of experience. I had problems with lining up numbers or letters within the document. However, now it is a breeze and this program is great. I am beginning to depend on it a lot. Bottom line - it is a great product.
Charles T T

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
Open your PDF document. Right-click in the PDF document where you want to add the Digital signature. Select Sign Document from the right-click menu. Select Digital Signature.
Change your e-signature in new Acrobat Open the PDF document or form in Acrobat or Acrobat Reader, and select Fill & Sign from the Quick action toolbar. From the signature dialog, select the cross (X) sign beside the previously added signature. To add a replacement signature to the document, select Add Signature.
Open the PDF document or form in Acrobat or Acrobat Reader, and select Fill & Sign from the Quick action toolbar. From the signature dialog, select the cross (X) sign beside the previously added signature. To add a replacement signature to the document, select Add Signature.
Can I edit a PDF that I signed? If you're the only one signer, you can remove the signature and then work on the document or edit the source document. To remove your signature, right-click the signature and then choose Clear Signature.
Launch Nitro Pro and open the document you would like to sign. 2. Select from the File|Menu, then select from the Signatures section of the ribbon, then select your signature profile.
How to edit the appearance of a digital signature. In the File menu, click Preferences, then Digital Signature, and then Appearances. In the Signature appearances list, select a signature to configure, and then click Edit.
Learn how to delete a signature from PDF docs. Provided the document isn't locked, you can then remove your own signature from the PDF by simply right-clicking the signature and choosing the Clear Signature option. This should remove the signature, allowing you to edit or re-sign the PDF.
How To Sign Documents with Nitro PDF Pro Open your document in Nitro PDF Pro. On the main Home tab choose the QuickSign option and select Create New Signature. Choose from one of the four secure signing methods: Click Ok, navigate to the section where you want to place your signature and left click.
Join 64+ million people using paperless workflows to drive productivity and cut costs