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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Generate your customized signature
Adjust the size and placement of your signature
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
I was sort of afraid to install and pay for this online. There is so much identity theft out there.. I was just a victim of fraud on my bank account. But this seem pretty secure and was easy to get going.
Jeanne V
5.0
What do you like best?
We like PDFfiller because our patients don't want to have to waste precious minutes of their appointment time completing a health history update in the office. It's much simpler, not to mention faster, to have them do it at home and submit it when they're done!
What do you dislike?
The log-in process for the patient who has never used this service. We have a few patients who value their privacy and would rather not have to create an account in order to complete a form.
What problems are you solving with the product? What benefits have you realized?
PDFfiller is wonderful for our new patients! We send them to our website and have them navigate to where we have the clickable button to either complete the forms online or to print and bring them with to their appointment.
Robin McRath
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.
Upload document
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.
Reliable Radio Resolution Feature
The Reliable Radio Resolution feature elevates your communication experience by ensuring clear and consistent radio signals. It addresses common issues faced in various environments, providing users with a dependable solution.
Key Features
Enhanced signal clarity for uninterrupted communication
Adaptive technology that adjusts to changing environments
User-friendly interface for seamless operation
Robust connectivity for extended range
Compatibility with various devices and platforms
Potential Use Cases and Benefits
Ideal for outdoor adventures, ensuring you remain connected in remote areas
Perfect for construction sites, enhancing team coordination and safety
Supports emergency services, providing reliable communication in critical situations
Boosts efficiency in logistics operations by keeping teams informed and responsive
By utilizing the Reliable Radio Resolution feature, you eliminate communication breakdowns that can lead to misunderstandings and delays. This feature empowers you to work confidently, whether in the field or during critical operations, ensuring your voice is heard loud and clear.
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.
How can I increase the resolution of my telescope?
Another way to increase the resolution is to connect telescopes together to make an interferometer. Radio waves from an object reach each telescope in the interferometer at slightly different times, so the waves are out of sync with one another.
What limits the resolution of a telescope?
The minimum angular separation of two sources that can be distinguished by a telescope depends on the wavelength of the light being observed and the diameter of the telescope. This angle is called the DIFFRACTION LIMIT. In this equation, the computed angle is in radians.
How do you determine the resolution of a telescope?
Answer: First convert all numbers to centimeters, then use the formula to calculate the resolution in radian units: L = 21 centimeters, D = 100 meters = 10,000 centimeters, then R = 1.22 × 21 cm /10000 cm so R = 0.0026 radians.
What is resolution limit?
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 meant by the diffraction limited resolution of a telescope?
angular resolution. Ability of a telescope to distinguish between adjacent objects in the sky. Diffraction-limited resolution. Theoretical resolution that a telescope can have due to diffraction of light at the telescope's aperture. Depends on the wavelength of radiation and the diameter of the telescope's mirror.
What happens if you increase the magnification beyond the maximum resolution?
What happens if you increase the magnification beyond the maximum resolution. You get a blurry mess, somewhat like a pixelated image.
What is the maximum magnification of a telescope?
A 6 telescope can magnify up to 300x, and an 8 telescope up to 400x. However, this is strictly a theoretical maximum, because the primary limiting factor is not the telescope itself. The usual limiting factor in maximum magnification is Earth's atmosphere.
How can you increase the resolution of a telescope?
Another way to increase the resolution is to connect telescopes together to make an interferometer. Radio waves from an object reach each telescope in the interferometer at slightly different times, so the waves are out of sync with one another.
Ready to try pdfFiller's? Reliable Radio Resolution
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