pdfFiller is the most cost-effective alternative to KeepSolidSign and FTP Attachments
Over 64 million users choose pdfFiller for its award-winning ease of use, comprehensive functionality, and unbeatable price.
Drop document here to upload
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.
G2 recognizes pdfFiller as one of the best tools to power your paperless office
4.6/5
— from 710 reviews
Experience effortless PDF management with the best alternative to KeepSolidSign & FTP Attachments

Create and edit PDFs
Instantly customize your PDFs any way you want, or start fresh with a new document.

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

Save reusable templates
Reclaim working hours by generating new documents with reusable pre-made templates.

Get eSignatures done
Forget about printing and mailing documents for signature. Sign your PDFs or request signatures in a few clicks.

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

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

Securely store documents
Keep all your documents in one place without exposing your sensitive data.
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
Switch from KeepSolidSign & FTP Attachments 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.
Get started withan 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

The leading KeepSolidSign & FTP Attachments alternative for SMBs and enterprises
Break free from paperwork setbacks with digital workflows.
Advanced eSignatures
Enterprise-ready features
Integrations and API
Organizations & Admin Dashboard
Find out why users choose pdfFiller over KeepSolidSign and FTP Attachments
Read more or give pdfFiller a try to experience the benefits for yourself
9.1
Ease of Use
9.0
Quality of Support
9.2
Ease of Setup
Pdf Editor Online: Try Risk Free
This chart represents a partial list of features available in pdfFiller, KeepSolidSign, FTP Attachments
KeepSolidSign
FTP Attachments
CRMs, Google Docs, Office 365
Search Form Online
New Form and Document Creator
Host Fillable Forms
Edit PDF
Fill Online
Sign Online
PDF Converter
Annotate PDF
Search Text in PDF
Add Watermark, Images and Video
Collaborate and Versions
Encryption and Security
Two-Factor Authentication
Unlimited Cloud Storage
Fax Online
Track Sending Documents
Free Mobile App
API
pdfFiller vs KeepSolidSign vs FTP Attachments: Select the best Option for Document Storage
If your business seeks to improve document flow, t’s essential to pick a reliable document management resolution that will securely process the files through their entire lifecycle. Any peculiarity at the stage of form development is important as much as doc storage at the end of the cycle. It enables us to monitor the files for the statistics and for comfortable access if necessary. Nevertheless, there are a few options that offer unlimited storage as a fundamental part of the platform. Among them pdfFiller - an alternative choice to KeepSolidSign and FTP Attachments. It provides a great deal of revolutionary tools. Let’s see its numerous benefits:
Create the templates with the addition of text, day and time and signature fields.
Add pictures and watermarks to your templates.
Integrate your templates with Google Drive as well as other systems.
Draw, scan or type e-signature.
Integrate with the online storage systems.
Upload PDFs and alter them with the PDF editor.
Send files byfax and post, text message.
Add e-signature to the documents.
Use a signature template or erase it and generate a different one.
Monitor the changes in the templates.
The mentioned above proves that the PDFfller is a unique KeepSolidSign and FTP Attachments alternative with a variety of revolutionary features to be personalized to your personal needs. It is simple to use it on any tool and even on mobile phone by using a no cost application. It is also compatible with the OS and services. It is reasonable to mention that the PDF alternative offers a price lower on the market, compared to other platforms. The price differs based on which plan you select: for business or individuals.
pdfFiller: The KeepSolidSign & FTP Attachments alternative that leaves no box unchecked
Create & edit PDFs online
Fill out forms
Collect data & signatures
Store documents in the cloud