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Jan 22, 2026
PDF Tool - Certify Online Gratis
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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
Note: Integration described on this webpage may temporarily not be available.
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Discover the simplicity of processing PDFs online
Upload your document in seconds
Fill out, edit, or eSign your PDF hassle-free
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Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Every PDF tool you need to get documents done paper-free
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.
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.
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.
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.
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.
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:
Very happy. Makes my documents look so much nicer and since I have neuropathy in my hands, it decreases my pain on a regular basis (way easier to type than hold a pen or pencil). Thanks SO much.
2015-05-04
At first I did have problems figuring out how to use it. I don't see a "copy/paste" button and wish there was one. Overall, as I start to use it more and more I am liking it.
Regards.
2017-03-20
I spent approx $70 for PDF Filler, could not find a page rotate icon when I really needed it, then a screen popped up that I would have to spend $120 per year to have this additional function. I was in the midst of needing to reorient some legal documents so paid the additional money. I find this to be less than fair business practice as when I signed up there was no clear breakdown presented on the functions available for different costs.
2017-04-28
Just started using it today and found that it's a capable software. Tends to be slow sometime but that's maybe because of the internet connection. Overall it's good.
2017-08-22
Just subscribed but my first form was excellently done. Intuitive and easy to negotiate the Dashboard. I really liked the alignment lines that assist to keep things neat when typing data into the field. Look forward to learning more about the capabilities. Thanks
2018-10-02
I like using the program the only downfall for me is unless I pay more for the subscription I'm not allowed to use the premier options. That is my opinion It's already expensive for me since I really only use it for tax returns.
2019-03-07
Pricing is very good
Pricing is very good. Free trial helped a lot to discover vital features. After trial I have decided to purchase a subscription. Esign, editing, and organizing are working perfectly
2019-05-24
Much Needed Support
When everything in my world is reaching for a way and there is no way in sight, pdfFiller comes through. They come through when I'm up and they come through when I'm down. Unlike any other needed support, you are there even when Im bleeding. Thank you
2023-03-24
Can you remember what all the lower…
Can you remember what all the lower case letters look like when you are filling out forms by hand. I didn't remember, but when you use PDF filler you it does it for you.
2021-11-04
PDF Tool - Certify Feature
The Certify feature in our PDF Tool allows you to add a layer of authenticity and security to your documents. Easily certify your PDFs with a simple click. This feature ensures that your documents are trustworthy and protected from unauthorized changes.
Key Features
Simple certification process with intuitive interface
Supports multiple signature types including digital signatures
Customizable certification options for various document needs
Detailed certification logs for tracking purposes
Compatible with all major PDF viewers
Use Cases and Benefits
Ideal for businesses that require secure document handling
Great for legal professionals needing certified contracts and agreements
Useful for educators certifying student records and diplomas
Perfect for organizations that must ensure document integrity during audits
Enhances trust with clients and partners through secure documentation
By using the Certify feature, you address the crucial need for document security and trust. It helps you prevent fraud, maintain document integrity, and provide peace of mind to all parties involved. With easy certification at your fingertips, you can focus more on your work and less on worry.
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
How do you add a certified signature to a PDF?
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How to Sign a PDF with a Document Signing Certificate — YouTubeYouTubeStart of suggested client of suggested clip
How to Sign a PDF with a Document Signing Certificate — YouTube
What is a Certified PDF?
A Certified PDF is a regular PDF, with a few bits of extra information: It contains information about the preflight profile that was used to check the file. It contains logging information that tells you if the preflight was successful and if any errors or notifications were generated.
How do I certify a PDF document?
On the Protect tab, in the Certify Document group, click Certify.
On the Certify Profile Wizard, choose the actions you want to permit from the Permitted actions list.
Click Next.
Select a digital ID to certify with, and choose whether to make the certificate visible.
Click Next.
What is a PDF certificate?
A certificate stores the public key component of a digital ID. For more information about digital IDs, see Digital IDs. When you secure a PDF using a certificate, you specify the recipients and define the file access level for each recipient or group.
What is an optimized PDF?
Most PDF editing/creation software offer an option called Fast Web View or Optimize that allows PDF files to display the first few pages of the PDF file when the document is opened, instead of waiting for the full file to be available. Optimized files are also generally smaller than non-optimized files.
What does an optimized PDF mean?
Answer: To optimize a PDF usually means to reduce the size of the files so that they are more optimal for Internet use. If you work with PDF files, there is a good chance this will be useful to you. By shrinking the size of the file, you can now send the PDFs as email attachments or even a bulk of them.
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