PDF Adding Watermark Tool Guide

Note：Before learning how to use different functions, we recommend that read the Request Workflow to know a basic PDF processing process. When using different functions, you can set their own special parameters when uploading files. Other basic steps are consistent.

PDF Add Watermark:

java

{
    "type": "text",
    "scale": "1",
    "opacity": "0.5",
    "rotation": "0.785",
    "targetPages": "1-2",
    "vertalign": "center",
    "horizalign": "left",
    "xoffset": "100",
    "yoffset": "100",
    "content": "test",
    "textColor": "#59c5bb",
    "front": "",
    "fullScreen": "111",
    "horizontalSpace": "10",
    "verticalSpace": "10",
    "extension": ""
}

Parameter	Description
type	Watermark type (text: text type watermark, image: image type watermark)
scale	Zoom (image type attribute)
opacity	Transparency：0～1
rotation	Rotation angle, a positive number means counterclockwise rotation
targetPages	Page number, page number starts from 1, for example：1,2,4,6,9-11
vertalign	Vertical alignment（top、center、bottom）
horizalign	Horizontal alignment（left、center、right）
xoffset	Horizontal offset
yoffset	Vertical offset
content	Text
textColor	Text color, for example：#FFFFFF
front	Present on the front
fullScreen	Whether to fill the entire page
horizontalSpace	Horizontal spacing (supported only if --fullscreen exists) default value 50
verticalSpace	Vertical spacing (supported only if --fullscreen exists) default value 50
extension	Extended information, base64 encoding

Java Example:

Replace apiKey with the publicKey obtained from the dashboard, file with the file you want to convert, and language with your preferred interface error prompt language type.

java

import java.io.*;
import okhttp3.*;
public class main {
  public static void main(String []args) throws IOException{
    OkHttpClient client = new OkHttpClient().newBuilder()
      .build();
    MediaType mediaType = MediaType.parse("text/plain");
    RequestBody body = new MultipartBody.Builder().setType(MultipartBody.FORM)
      .addFormDataPart("file","{{file}}",
 RequestBody.create(MediaType.parse("application/octet-stream"),
                                          new File("<file>")))
      .addFormDataPart("language","{{language}}")
      .addFormDataPart("password","")
      .addFormDataPart("parameter","{    \"type\": \"image\",    \"scale\": \"1\",   \"opacity\":\"0.5\",    \"rotation\":\"0.785\",   \"targetPages\":\"1-5\",   \"vertalign\":\"center\",   \"horizalign\":\"left\",   \"xoffset\":\"100\",   \"yoffset\":\"100\",   \"front\":\"\",    \"fullScreen\":\"111\",   \"horizontalSpace\":\"10\",   \"verticalSpace\":\"10\",   \"extension\":\"\"}")
      .addFormDataPart("image","",
                       RequestBody.create(MediaType.parse("application/octet-stream"),
                                          new File("")))
      .build();
    Request request = new Request.Builder()
      .url("https://api-server.compdf.com/server/v1/process/pdf/addWatermark")
      .method("POST", body)
      .addHeader("x-api-key", "{{apiKey}}")
      .build();
    Response response = client.newCall(request).execute();
  }
}

Result:

File Type	Description
.pdf	The PDF file after add watermarks

PDF Adding Watermark Tool Guide ​

PDF Adding Watermark Tool Guide