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.
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Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
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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

Experience effortless PDF management with the best alternative to KeepSolidSign & FTP Attachments

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Create and edit PDFs

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

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

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

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

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

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

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

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
5
I think it's a great tool for my office.
Kay M
5
PDFiller Review Great experience, filling out the documents just takes a bit of time. Gives my documents the professional look vs handwritten documents Seems like there is 1 too many steps to saving a document and then viewing and saving to my desktop.
Melissa W.

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
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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
Talk to sales
Interested in purchasing pdfFiller for your entire organization? Share your details, and our sales reps will help you get started. For small teams, explore our pricing page to choose the most suitable plan.
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