Use signNow Esignature API to Prefill smart fields

Edit a Word document, add fields, and customize it as you need. Collect signatures after importing a Word document directly to your signNow account using the API. Make it easy for recipients to fill your document.

Free to test
Fast to deploy
Powerful & secure

Adapt a simple Word document for signing by importing it into signNow with all necessary fields for filling

Add text tags for required fields and determine their width and height. They will be automatically added after the document is opened in signNow

Node.js

C#

Java

Python

cURL

Copy code

public partial class RestSharpSamples
    {
        /// <summary>
        /// Uploads a File and Creates a Document
        /// Accepted File Types: .doc, .docx, .pdf, .png
        /// </summary>
        /// <param name="accessToken"></param>
        /// <param name="filePath">Local Path to the File</param>
        /// <param name="apiUrl">Api host url</param>
        /// <param name="extractFields">If set TRUE the document will be checked for special field tags. If any exist they will be converted to fields.</param>
        /// <returns>ID of the document that was created</returns>
        public static CreateResponseModel UploadFile(string accessToken, string filePath, string apiUrl, bool extractFields = false)
        {
            var client = new RestClient { BaseUrl = new Uri(apiUrl) };
 
            var path = "/document" + (extractFields ? "/fieldextract" : string.Empty);
 
            var request = new RestRequest(path, Method.POST)
                .AddHeader("Accept", "application/json")
                .AddHeader("Authorization", "Bearer " + accessToken)
                .AddFile("file", Path.GetFullPath(filePath));
 
            var response = client.Execute(request);
             
            
            if (response.StatusCode != HttpStatusCode.OK)
            {
                throw new Exception(response.Content);
            }
 
            return JsonConvert.DeserializeObject<CreateResponseModel>(response.Content);
        }
    }

We provide developers with complete SDKs for all popular languages, allowing them to integrate eSignature workflows without writing a single line of code.
With our detailed documentation, integrating the signNow API is a breeze.
The signNow API not only provides you with eSignatures: use it to create fillable forms, request payments, and download & archive documents using simple API calls.

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Protects the private health information of your patients.

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Watch the signNow API in action

Get started with uninterrupted eSignature API: use signNow Esignature API to Prefill smart fields

Consolidate and streamline your eSignature workflows and establish seamless processes. Try the signNow API, implement eSignature workflows into your custom apps and websites in minutes, and seamlessly use signNow Esignature API to Prefill smart fields.

Use signNow Esignature API to Prefill smart fields the signNow API for uninterrupted eSignature API

Click API on the signNow main page and create your API Sandbox account.
Open your email to confirm the registration and specify a password for accessing your Developer Sandbox environment.
Find the list of your apps at the top of the page. By default, you can also find a Test App for testing the API.
Click its name to access the Client ID and Basic Authorization Token.
Launch the API using the information from the previous step.
Use the code samples from the signNow library.
When you're ready to go live, go to your signNow account and choose a subscription plan.
If you can't find a subscription that suits your needs, contact the Sales team.
Change the test URL in your requests to the production environment URL.
Delight your customers and partners with a streamlined eSignature experience.

The signNow API is straightforward to embed, examine, and operate (no sales people involved). Gain the opportunity to use signNow Esignature API to Prefill smart fields easily. Select signNow for more streamlined eSignature workflows.

How it works

Create an account and get the required tokens

Use code samples to use signNow Esignature API to Prefill smart fields

Enjoy the power of eSignature in your workflows

Watch our instructions to build custom integrations with ease

signNow offers a free testing environment to explore the eSignature.

Trusted eSignature solution — what our customers are saying

Explore how the signNow eSignature platform helps businesses succeed. Hear from real users and what they like most about electronic signing.

This service is really great! It has helped...

5

anonymous

This service is really great! It has helped us enormously by ensuring we are fully covered in our agreements. We are on a 100% for collecting on our jobs, from a previous 60-70%. I recommend this to everyone.

Read full review

I've been using SignNow for years (since it...

5

Susan S

I've been using SignNow for years (since it was CudaSign). I started using SignNow for real estate as it was easier for my clients to use. I now use it in my business for employement and onboarding docs.

Read full review

Everything has been great, really easy to incorporate...

5

Liam R

Everything has been great, really easy to incorporate into my business. And the clients who have used your software so far have said it is very easy to complete the necessary signatures.

Read full review