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What our customers say about pdfFiller
See for yourself by reading reviews on the most popular resources:
What do you like best?
I like the ease to update a document quickly and effectively.
What do you dislike?
I wish that it was more intuitive I.e. when I erase something, ask what I’d like to do next and learn my behavior.
What problems are you solving with the product? What benefits have you realized?
I’m able to fix mistakes on PDFs that have already been executed.
I like the ease to update a document quickly and effectively.
What do you dislike?
I wish that it was more intuitive I.e. when I erase something, ask what I’d like to do next and learn my behavior.
What problems are you solving with the product? What benefits have you realized?
I’m able to fix mistakes on PDFs that have already been executed.
2020-02-05
Good layout and simple to understand
Good layout and simple to understand. However, while editing I realised that it does change the original size of the item when it is converted the format.
2019-06-23
Easy Peasy
We are an international company and approvals from everywhere around the globe are always needing signatures.
Ease of use is key for fast turnaround on signing multiple documents.
Can't think of anything to complain about.
2019-09-18
PDFfiller is almost as good as Adobe
PDFfiller makes PDF editing simple and quick. It's almost as good as Adobe itself. If you don't have Adobe, then here's you substitute.
It's a simplistic and quick online PDF editor. You basically upload your PDF file, then if provides to all of your needs from: inserting text, erasing text and other modification options.
None at the moment because I appreciate using it.
2019-03-13
Great Program to help buyer's get their electronically signed documents
It makes it much easier for the buyer to get documents that can be electronically signed.
Quality of the documents that get sent to my buyer's is fantastic. The look of the documents are professional quality
Ease of use. It is hard to remember how to set up the file to get to the buyer quickly. I always have to try it 2 different times to get it right.
2017-11-14
PdfFiller has been an extremely convenient tool and service for me and my business. I basically have admin on demand without all the extra machinery of fax, printers, Scanners, etc. I can do it all from my device. I am happy to have found this service.
2024-04-05
Sign it!
In general is a very good option to fill and sign documents. I did not buy the paid version because I was in need at the moment and it worked perfect for me.
I like the easy to follow process of this software. You dont need to know how to use it. As soon as you start filling any document everything march along the way
I did not see any cons because I was able to resolve my needs with the free trial. I would hesitate to pay for this software if I need again.
2022-07-23
I haven't found a better forms and…
I haven't found a better forms and documents website than PDFFiller. Thanks for all that you do and keep up the great work.
2021-04-16
This platform has completely…
This platform has completely transformed the way I manage documents. From editing PDFs to creating fillable forms, the tools are intuitive and incredibly easy to use.
2025-06-14
Choose Formula Resolution Feature
The Choose Formula Resolution feature empowers users to streamline their decision-making process. By simplifying complex formula choices, you can enhance your productivity and focus on core tasks.
Key Features
Intuitive interface for easy navigation
Customizable formula options to suit your needs
Real-time updates for accurate decision results
Seamless integration with existing tools
Potential Use Cases and Benefits
Enhancing project management efficiency
Facilitating data analysis in various industries
Optimizing financial forecasting and budgeting
Supporting educational and training modules
This feature addresses your challenges by offering clear, straightforward paths for resolution. When facing complex choices, you can trust that the Choose Formula Resolution feature will guide you to the best solution, saving you time and reducing uncertainty.
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.
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How do you determine resolution?
The resolution refers to the number of pixels (dots) per inch (DPI). For example, if an image contains 800-by-600 pixels and has a size of 4-by-3 inches, then the resolution is 800 pixel / 4 inches = 200 DPI.
How do you determine the resolution of a microscope?
NA= n x sin Where n is the refractive index of the imaging medium and is half of the angular aperture of the objective. ...
d= /2 NA. Where is the wavelength of light used to image a specimen. ...
d= 2 /NA2 ...
R= 1.22 /Naomi+Second.
How do you determine pixel size?
Take the value in the “Height (mm)” column and divide it by the height in pixels. This is called “pixel size y”. 3. Calculate the average between the two values — (“pixel size x” + “pixel size y”) / 2.
What is meant by limit of resolution?
The limit of resolution (or resolving power) is a measure of the ability of the objective lens to separate in the image adjacent details that are present in the object. It is the distance between two points in the object that are just resolved in the image. ... Thus, an optical system cannot form a perfect image of a point.
What is the limit of resolution of a microscope?
Lateral resolution in an ideal light microscope is limited to around 200 nm, whereas axial resolution is around 500 nm (for examples of resolution limits, please see below).
What is meant by limit of resolution of a microscope?
Resolution and Imaging. The limit of resolution (or resolving power) is a measure of the ability of the objective lens to separate in the image adjacent details that are present in the object. It is the distance between two points in the object that are just resolved in the image.
What is the resolution of a microscope?
The resolution of an optical microscope is defined as the shortest distance between two points on a specimen that can still be distinguished by the observer or camera system as separate entities.
What factors affect resolution of a microscope?
The primary factor in determining resolution is the objective numerical aperture, but resolution is also dependent upon the type of specimen, coherence of illumination, degree of aberration correction, and other factors such as contrast-enhancing methodology either in the optical system of the microscope or in the ...
What is limit of resolution of telescope?
It is defined as the inverse of the distance or angular separation between two objects which can be just resolved when viewed through the optical instrument. Thus, higher the diameter d, better the resolution. The best astronomical optical telescopes have mirror diameters as large as 10 m to achieve the best resolution.
What is the definition of resolution in microscope?
The resolution of an optical microscope is defined as the shortest distance between two points on a specimen that can still be distinguished by the observer or camera system as separate entities.
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