Devise Formula Log Gratis
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.
0
Forms filled
0
Forms signed
0
Forms sent
Discover the simplicity of processing PDFs online

Upload your document in seconds

Fill out, edit, or eSign your PDF hassle-free

Download, export, or share your edited file instantly
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:
I was in a total jam and needed forms right away. I was so afraid my only option was to type all these required forms and then have to write in the answers with a pen. It would have taken me days to complete! When I discovered PDFfiller online it was like my guardian angel had guided me to the site! The user friendly site was easy to navagate and had easy to understand instructions. I'm very much impressed with your product and when I need another PDF form, I most certainly will use your product again. Thank you so much!
2017-01-05
PDF filler is user friendly. I am able to access previous years 1040 forms for clients who have had issues with their past years taxes. All of the forms are easily accessible. I enjoy using the tools available such as highlight, signing documents ect.
2017-06-24
So far it has worked for what I need. I wish there was a better price for non profit corporations. AZ Exotic Bird Rescue, Inc. is a 501c3 charity but I had to buy myself because of the cost.
2017-11-15
I love using PDFfiller. I believe it is a wonderful program. I use it so often that I started scanning in personal files and paperwork at home to keep me organized. I can fill out anything within just a few moments and it looks like I've spent hours on my documents.
The only negative with this program is the process moves a little. Sometimes when I'm rushing to complete documents I doesn't seem to matter what network or computer I use, I still feel like from the time to load a document to the time of completion and sending out there the other parties, its taken me a little too long for my personal opinion but I still use the program religiously to complete just about every document from legal forms that I create to filling out paperwork at the doctor's office for my children.
I highly recommend PDFfiller!
2018-07-05
Makes life EASY
I sign a lot of forms daily in my job. PDFfiller makes is so fast
PDFfiller is very easy to use on all mobile devices. The signature field is super easy to use, makes filling out forms super fast.
No cons! This software is very easy to use, and should be used by everybody! Thanks for the great product!
2019-09-25
It's great I had no idea how to get started but the process made simple is the best! This is my first year in business for myself and proving income was scary to think about, but now I can handle my profits and losses monthly with accuracy!!
2023-08-17
So far I have done only the basic I feel with this program. I am sure there are far more things I could be doing with this but at this time I am still learning
2022-02-10
I love this program
I love this program! I am able to easily create PDFs and sign them with a verified signature. It just showed me how to merge two documents into one. Great program!
2021-04-21
i need to send this form to the IRS for my Covid 19...
i need to send this form to the IRS for my Covid 19 stimaulu check can be appproved cause id filled Identity Theft I had to do 14039 Affidavit form now i need away to send email it or something have know way of printing out dont have access to a printer.
2020-05-05
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 calculate logarithms?
Logarithm, the exponent or power to which a base must be raised to yield a given number. Expressed mathematically, x is the logarithm of n to the base b if bx = n, in which case one writes x = logo n. For example, 23 = 8. Therefore, 3 is the logarithm of 8 to base 2, or 3 = log2 8.
How do you do logs on a TI 30x calculator?
Suggested clip How to Solve Logs on the Texas Instruments TI-30X IIS Calculator YouTubeStart of suggested client of suggested clip How to Solve Logs on the Texas Instruments TI-30X IIS Calculator
How do you calculate negative log?
3:20 11:15 Suggested clip MCAT Math Vid 8 — Logarithms and Negative Logs in pH and PKA YouTubeStart of suggested client of suggested clip MCAT Math Vid 8 — Logarithms and Negative Logs in pH and PKA
How do you find the negative log?
In particular, the logarithm of a negative real number x can then be calculated as log(x)=log(|x|a)=log(|x|)+log(a)=log(|x|)+i. For all KZ. Therefore, the complex logarithm is only defined up to multiples of 2i ! Or maybe log(x)=log(|x|ei1772)=log(|x|)+log(ei1772)=log(|x|)i1772.
How do you find the natural log of a negative number?
1:33 7:10 Suggested clip LN(-2), how can we have negative number inside natural logarithm YouTubeStart of suggested client of suggested clip LN(-2), how can we have negative number inside natural logarithm
How do you add a negative log?
A common technique for handling negative values is to add a constant value to the data prior to applying the log transform. The transformation is therefore log(Y+a) where an is the constant. Some people like to choose a so that min(Y+a) is a very small positive number (like 0.001). Others choose a so that min(Y+a) = 1.
#1 usability according to G2
Try the PDF solution that respects your time.