Create a legally-binding electronic signature and add it to contracts, agreements, PDF forms, and other documents – regardless of your location. Collect and track signatures with ease using any device.
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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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Download, share, print, or fax your signed document
Every eSignature tool you need – inside a powerful PDF software
eSignature solution
Document tracking
Enhanced productivity
Custom branding
Security & compliance
eSign documents and collect signatures
Easily fill, edit, and sign your PDF documents in a single application, on any device.
Type, draw, or use a signature converter to create an eSignature from a picture of your handwritten autograph.
Create fillable PDFs and send them for signature to one or multiple recipients.
Set signer roles and customize a signing order.
Get visibility into the signing process
Receive instant alerts once signatures are in place.
Specify CC’d recipients and set actions upon document completion.
Monitor changes in your documents with audit trails.
Speed up your approval workflows
Send documents for signature faster by sharing them via short links.
Simplify data and signature collection by posting fillable PDF forms online.
Collect payments along with signed documents.
Showcase your branding when requesting signatures
Display your logo on signature invites, user notifications, and in the eSignature editor.
Customize an email message for your eSignature invites.
Redirect signers to your website once they complete your document.
Maintain industry-leading security and compliance
Authenticate signers via a password.
Make your document workflows compliant with industry-specific regulations, including HIPAA.
Secure the authenticity of a document with a unique ID.
Set an expiration date for your document.
Join the world’s largest companies
Employees at these companies use our products.
How to Add a Signature to PDF (and Send it Out for Signature)
Watch the video guide to learn more about pdfFiller's online Signature feature
pdfFiller scores top ratings in multiple categories on G2
4.6/5
— from 710 reviews
5.0
What do you like best?
This is available everywhere where you go. You do not have to take your computer or have a software installed on your laptop. You can access it from anywhere else. In addition, it is very user friendly to navigate through the platform to accomplish what you would like to do.
What do you dislike?
I just don't have any dislike. So there is not much to say for this area.
Recommendations to others considering the product:
It is easy and available for access anywhere you access a computer. You do not have to have one.
What problems are you solving with the product? What benefits have you realized?
All my PDF applications are done through the platform. Fast, available always, and you can do it on any computer or mobile device.
Taner Oktar
5.0
What do you like best?
I am able to send documents out for a signature and receive them back signed during a Zoom Video Conference.
What do you dislike?
I wish it was compatible with our personal case management software program.
What problems are you solving with the product? What benefits have you realized?
I have E-signatures on the original documents and not having to use multiple copies.
Administrator in Judiciary
Sign any document using pdfFiller’s eSignature service without hassle
Add your virtual signature in just a few simple steps – without a scanner or printer.
Upload
Upload your document to pdfFiller and open it in the editor.
Sign
Generate and save your electronic signature using the method you find most convenient.
Tweak
Resize your signature and adjust its placement on a document.
Retrieve
Save a signed, printable document on your device in the format you need or share it via email, a link, or SMS. You can also instantly export the document to the cloud.
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Why choose pdfFiller for eSignature and PDF editing?
Cross-platform solution
Upload your document to pdfFiller and open it in the editor.
Unlimited document storage
Generate and save your electronic signature using the method you find most convenient.
Widely recognized ease of use
Resize your signature and adjust its placement on a document.
Reusable templates & forms library
Save a signed, printable document on your device in the format you need or share it via email, a link, or SMS. You can also instantly export the document to the cloud.
The benefits of electronic signatures
Bid farewell to pens, printers, and paper forms.
Efficiency
Enjoy quick document signing and sending and reclaim hours spent on paperwork.
Accessibility
Sign documents from anywhere in the world. Speed up business transactions and close deals even while on the go.
Cost savings
Eliminate the need for paper, printing, scanning, and postage to significantly cut your operational costs.
Security
Protect your transactions with advanced encryption and audit trails. Electronic signatures ensure a higher level of security than traditional signatures.
Legality
Electronic signatures are legally recognized in most countries around the world, providing the same legal standing as a handwritten signature.
Sustainability
By eliminating the need for paper, electronic signatures contribute to environmental sustainability.
Enjoy straightforward eSignature workflows without compromising data security
Regulates the use and holding of personal data belonging to EU residents.
SOC 2 Type II Certified
Guarantees the security of your data & the privacy of your clients.
PCI DSS certification
Safeguards credit/debit card data for every monetary transaction a customer makes.
HIPAA compliance
Protects the private health information of your patients.
CCPA compliance
Enhances the protection of personal data and the privacy of California residents.
Sign Over Equation Resolution Feature
The Sign Over Equation Resolution feature simplifies the process of managing and solving equations. It provides users with a clear, efficient way to handle mathematical operations, ensuring accuracy in results.
Key Features
User-friendly interface for easy input and navigation
Instant resolution of equations with step-by-step explanations
Compatibility with various mathematical operations
Data storage for previous equations and results
Customization options for displaying results
Potential Use Cases and Benefits
Students can understand complex equations more easily
Tutors can demonstrate solutions effectively during sessions
Professionals can analyze equations in their reports or projects
Anyone needing quick and accurate mathematical solutions
This feature targets common challenges such as misunderstanding equations or spending too much time trying to get the right answer. By providing clear guidance and immediate results, it helps you save time and enhances your confidence in handling math.
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.
Equation (1) indicates that the resolution is the difference between peak retention times divided by the average peak width. In a peak with Gaussian distribution, the peak width is W = 4 (where is the standard deviation) and the peak FHM is W0. 5h = 2.354.
How do you calculate 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.
What is the limit of resolution of a microscope?
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 compound microscope?
In a compound microscope, the wavelength of the light waves that illuminate the specimen limits the resolution. The wavelength of visible light ranges from about 400 to 700 nanometers. The best compound microscopes cannot resolve parts of a specimen that are closer together than about 200 nanometers.
What is the 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.
What is Abbé's equation?
Abbé's equation. This is the diffraction-limited resolution of an optical system. If all aberrations and distortions are eliminated from the optical system, this will be the limit to resolution. If aberrations and distortions are present, they will determine the practical limit to resolution.
What is Abbé's Law?
Abbé's principle relates to accuracy when measuring dimensions. This principle states that, “In order to improve measurement accuracy, the measurement target and the scale of the measuring instrument must be placed in a collinear fashion in the measurement direction.”
What is Abbé's diffraction limit?
The Abbé diffraction limit for a microscope is called the numerical aperture (NA) and can reach about 1.41.6 in modern optics, hence the Abbé limit is d = /2.8. To increase the resolution, shorter wavelengths can be used such as UV and X-ray microscopes.
Ready to try pdfFiller's? Sign Over Equation Resolution
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