KeepSolid Sign Lock PDF shortcut alternative For Free

Use pdfFiller instead of KeepSolid Sign to fill out forms and edit PDF documents online. Get a comprehensive PDF toolkit at the most competitive price.
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Discover the simplicity of processing PDFs online

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Upload your document in seconds
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Fill out, edit, or eSign your PDF hassle-free
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Download, export, or share your edited file instantly
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
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

Every PDF tool you need to get documents
done paper-free

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Create & edit PDFs

Generate new PDFs from scratch or transform existing documents into reusable templates. Type anywhere on a PDF, rewrite original PDF content, insert images or graphics, redact sensitive details, and highlight important information using an intuitive online editor.
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Fill out & sign PDF forms

Say goodbye to error-prone manual hassles. Complete any PDF document electronically – even while on the go. Pre-fill multiple PDFs simultaneously or extract responses from completed forms with ease.
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Organize & convert PDFs

Add, remove, or rearrange pages inside your PDFs in seconds. Create new documents by merging or splitting PDFs. Instantly convert edited files to various formats when you download or export them.
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Collect data and approvals

Transform static documents into interactive fillable forms by dragging and dropping various types of fillable fields on your PDFs. Publish these forms on websites or share them via a direct link to capture data, collect signatures, and request payments.
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Export documents with ease

Share, email, print, fax, or download edited documents in just a few clicks. Quickly export and import documents from popular cloud storage services like Google Drive, Box, and Dropbox.
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Store documents safely

Store an unlimited number of documents and templates securely in the cloud and access them from any location or device. Add an extra level of protection to documents by locking them with a password, placing them in encrypted folders, or requesting user authentication.

Customer trust by the numbers

64M+
users worldwide
4.6/5
average user rating
4M
PDFs edited per month
9 min
average to create and edit a PDF
Join 64+ million people using paperless workflows to drive productivity and cut costs

Why choose our PDF solution?

Cloud-native PDF editor

Access powerful PDF tools, as well as your documents and templates, from anywhere. No installation needed.

Top-rated for ease of use

Create, edit, and fill out PDF documents faster with an intuitive UI that only takes minutes to master.

Industry-leading customer service

Enjoy peace of mind with an award-winning customer support team always within reach.

What our customers say about pdfFiller

See for yourself by reading reviews on the most popular resources:
I couldn't print directly so I followed instructions for converting document into PDF file on my computer - smooth sailing after that. I like the paper trail of all activities with forms - very helpful to review My Account and see what I have done.
Colette W
2016-02-09
What do you like best?
Extremely simple way to fill out, edit, and merge PDF documents.
What do you dislike?
Document uploading is slightly slow when working with larger files.
Recommendations to others considering the product:
User frindly/cost effective.
What problems are you solving with the product? What benefits have you realized?
Editing, merging, and sharing PDF files.
Seán Pennel, CSC®
2018-01-15
great customer service - sam great, easy to use, saves us a fortune on an extra phone line for a fax. Great customer service, I always use live chat and get answers and resolution within a few minutes. I have only had to use support 3 times in a year because the program is so user friendly.
Tonja
2019-03-29
Fantastic customer service For some reason I needed this and only once. I got the free trial and then forgot all about it until $115.00 was collected from my account, shock horror. All I can say is you have fantastic customer service, I explained my situation and a refund was issued that same day. Both friendly and speedy. Ace by name and by character, much appreciated. 1 star deducted as I would have liked a reminder email when the free trial was coming to an end.
Sam
2024-09-22
The UI were strange at times(As I sometimes had to look for something specific) , but overall my experience were really good as I am able to achieve my goal everytime with ease. I were using the edit pdf feature and again a bit of trouble trying to establish what I was looking for, but once I found it, it was quite an ease.
Johannes
2023-02-20
I had an issue with the platform that… I had an issue with the platform that the customer services team resolved within a very short time. Very happy with the explanation and the overall outcome.
Jean
2021-08-28
What do you like best? That the application makes editing documents that can be difficult to edit in certain formats simple. What do you dislike? I dislike that there are some formats that this application cannot edit. What problems are you solving with the product? What benefits have you realized? Solving the problem of editing time documents that get distorted in Google Docs or Microsoft. The benefit of being able to cut major time from editing projects by utilizing the many features.
Mia Lawrence
2021-02-16
Greatest software I ever come across… Greatest software I ever come across when dealing with pdf files...Recommend it so much to everyone looking for such apps...you are not going to regret purchasing it's plan...Thumbs up
Lizzie
2020-12-29
Great service Had to use to fill a form. Somehow missed cancellation. They gave me full refund when I asked (shortly after payment taken).Great service. Friendly and helpful. And good app too!
Jamie Wrate
2020-09-09

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!

#1 usability according to G2

Try the PDF solution that respects your time.
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