How to Autodetect & Convert a Document to a PNG Image Array using Go

Converting documents into PNG images is a straightforward process with a straightforward goal, not all that dissimilar to converting documents into PDF format. PNG images are viewable by anyone on any operating system and, because they are 2-dimensional raster files, their contents can’t be edited in any non-superficial way. With our Document to PNG Array API, you can convert dozens of common document types (including all major Office document formats & over 100 image formats) into PNG format with zero hassle. All you need to do is follow instructions below to structure your API call using the ready-to-run Go code examples provided below, and register a free account on our website to get your free-tier API key (these are valid for a hard limit of 800 API calls per month with no additional commitments; enterprise accounts are also available for large-scale projects).

To call the API, all you need to do is copy & paste the below code examples into your file, configure your API key & file input headers, and you’re all done:

package main

import (
     "fmt"
     "bytes"
     "mime/multipart"
     "os"
     "path/filepath"
     "io"
     "net/http"
     "io/ioutil"
)

func main() {

     url := "https://api.cloudmersive.com/convert/autodetect/to/png"
     method := "POST"

     payload := &bytes.Buffer{}
     writer := multipart.NewWriter(payload)
     file, errFile1 := os.Open("/path/to/file")
     defer file.Close()
     part1,
         errFile1 := writer.CreateFormFile("inputFile",filepath.Base("/path/to/file"))
     _, errFile1 = io.Copy(part1, file)
     if errFile1 != nil {
          fmt.Println(errFile1)
          return
     }
     err := writer.Close()
     if err != nil {
          fmt.Println(err)
          return
     }


     client := &http.Client {
     }
     req, err := http.NewRequest(method, url, payload)

     if err != nil {
          fmt.Println(err)
          return
     }
     req.Header.Add("Content-Type", "multipart/form-data")
     req.Header.Add("Apikey", "YOUR-API-KEY-HERE")

     req.Header.Set("Content-Type", writer.FormDataContentType())
     res, err := client.Do(req)
     if err != nil {
          fmt.Println(err)
          return
     }
     defer res.Body.Close()

     body, err := ioutil.ReadAll(res.Body)
     if err != nil {
          fmt.Println(err)
          return
     }
     fmt.Println(string(body))
}

That’s all there is to it. No need to worry about converting to PNG anymore!