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Convert an HTML document to PDF from a URL in Go with Go-Resty

In this guide, we'll show you how to convert HTML documents to PDFs using PDFShift's API. This is a straightforward process that can be accomplished with just a few lines of Go code.

package main

import (

func main() {
    // You can get an API key at
    apiKey := "sk_xxxxxxxxxxxx"

    params := map[string]interface{}{
        "source":            "",

    // Marshal the parameters into JSON
    jsonParams, err := json.Marshal(params)
    if err != nil {
        fmt.Println("Error marshaling JSON:", err)
    // Create a new Resty client
    client := resty.New()

    // Perform the request
    resp, err := client.R().
        SetHeader("Content-Type", "application/json").
        SetBasicAuth("api", apiKey).

    if err != nil {
        fmt.Println("Error performing request:", err)

    // Check response status code
    if resp.StatusCode() >= 400 {
        fmt.Printf("Request failed with status code %d: %s\n", resp.StatusCode(), string(resp.Body()))

    // Save the PDF document
    err = ioutil.WriteFile("result.pdf", resp.Body(), 0644)
    if err != nil {
        fmt.Println("Error saving PDF document:", err)

    fmt.Println("The PDF document was generated and saved to result.pdf")

With this Go script, you can effortlessly convert HTML documents from a URL to PDF files using PDFShift's API. Happy coding!

For further details on the source property and its usage, please refer to our dedicated documentation.

We hope this guide was helpful. If you have any questions or noticed any issues on the code above,
feel free to drop us a line.