How to convert PDF to image from uploaded file for PDF to image API in PHP and PDF.co Web API

PDF.co Web API is the flexible Web API that includes full set of functions from e-signature requests to data extraction, OCR, images recognition, pdf splitting and pdf splitting. Can also generate barcodes and read barcodes from images, scans and pdf.

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pdf-to-image.php

      
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>PDF To Image Results</title> </head> <body> <?php // Note: If you have input files large than 200kb we highly recommend to check "async" mode example. // Get submitted form data $apiKey = $_POST["apiKey"]; // The authentication key (API Key). Get your own by registering at https://app.pdf.co/documentation/api $outputFormat = $_POST["outputFormat"]; $pages = $_POST["pages"]; // 1. RETRIEVE THE PRESIGNED URL TO UPLOAD THE FILE. // * If you already have a direct PDF file link, go to the step 3. // Create URL $url = "https://api.pdf.co/v1/file/upload/get-presigned-url" . "?name=" . $_FILES["file"]["name"] . "&contenttype=application/octet-stream"; // Create request $curl = curl_init(); curl_setopt($curl, CURLOPT_HTTPHEADER, array("x-api-key: " . $apiKey)); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // Execute request $result = curl_exec($curl); if (curl_errno($curl) == 0) { $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE); if ($status_code == 200) { $json = json_decode($result, true); // Get URL to use for the file upload $uploadFileUrl = $json["presignedUrl"]; // Get URL of uploaded file to use with later API calls $accessFileUrl = $json["url"]; // 2. UPLOAD THE FILE TO CLOUD. $localFile = $_FILES["file"]["tmp_name"]; $fileHandle = fopen($localFile, "r"); curl_setopt($curl, CURLOPT_URL, $uploadFileUrl); curl_setopt($curl, CURLOPT_HTTPHEADER, array("content-type: application/octet-stream")); curl_setopt($curl, CURLOPT_PUT, true); curl_setopt($curl, CURLOPT_INFILE, $fileHandle); curl_setopt($curl, CURLOPT_INFILESIZE, filesize($localFile)); // Execute request curl_exec($curl); fclose($fileHandle); if (curl_errno($curl)) { // Display request error echo "Error: " . curl_error($curl); } else { $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE); if ($status_code == 200) { // 3. CONVERT PDF TO IMAGE RenderPDF($apiKey, $accessFileUrl, $outputFormat, $pages); } else { // Display service reported error echo "<p>Status code: " . $status_code . "</p>"; echo "<p>" . $result . "</p>"; } } } else { // Display service reported error echo "<p>Status code: " . $status_code . "</p>"; echo "<p>" . $result . "</p>"; } curl_close($curl); } else { // Display CURL error echo "Error: " . curl_error($curl); } function RenderPDF($apiKey, $fileUrl, $outputFormat, $pages) { $formats = array(0 => "png", 1 => "jpg", 2 => "tiff"); $format = $formats[$outputFormat]; // Create URL $url = "https://api.pdf.co/v1/pdf/convert/to/" . $format; // Prepare requests params $parameters = array(); $parameters["url"] = $fileUrl; $parameters["pages"] = $pages; // Create Json payload $data = json_encode($parameters); // Create request $curl = curl_init(); curl_setopt($curl, CURLOPT_HTTPHEADER, array("x-api-key: " . $apiKey, "Content-type: application/json")); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_POST, true); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $data); // Execute request $result = curl_exec($curl); if (curl_errno($curl) == 0) { $status_code = curl_getinfo($curl, CURLINFO_HTTP_CODE); if ($status_code == 200) { $json = json_decode($result, true); if ($json["error"] == false) { if ($format == "tiff") { // The TIFF format is multi-page, so the result is always the single file $resultFileUrl = $json["url"]; echo "<p><a href=" . $resultFileUrl . ">" . $resultFileUrl . "</p>"; } else { // JPEG and PNG formats are single-page, so the results are multiple $resultFiles = $json["urls"]; foreach ($resultFiles as &$resultFileUrl) echo "<p><a href=" . $resultFileUrl . ">" . $resultFileUrl . "</p>"; } } else { // Display service reported error echo "<p>Error: " . $json["message"] . "</p>"; } } else { // Display request error echo "<p>Status code: " . $status_code . "</p>"; echo "<p>" . $result . "</p>"; } } else { // Display CURL error echo "Error: " . curl_error($curl); } // Cleanup curl_close($curl); } ?> </body> </html>

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