Unity render screen to web page image.

RenderToWeb.cs

// Copy the function below and put it into your Web Template and build and launch for Web.
//
//function WebRender(base64) {
//	console.log(base64);
//	var img=document.createElement("img");
//	img.alt="Render";
//	img.src="data:image/png;base64,"+base64;
//	document.body.appendChild(img);
//}

using UnityEngine;
using System.Collections;

public class RenderToWeb : MonoBehaviour {

	// You can delete this whole OnGUI function for real use, this is for demo purposes only.
	private void OnGUI(){
		if (GUILayout.Button ("Render")) {
			StartCoroutine(Render());
		}
	}

	// This function does all the work
	public IEnumerator Render() {
		// First we wait for end of frame
		yield return new WaitForEndOfFrame();

		// Create a texture with the dimensions of the screen
		Texture2D tex = new Texture2D(Screen.width, Screen.height);
		// Read all the pixels from the current screen
		tex.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);
		// Apply it to our texture
		tex.Apply();

		// Make an external call and convert to Base64 string, so our web can render.
		Application.ExternalCall("WebRender", System.Convert.ToBase64String(tex.EncodeToPNG()));
	}
}