diff --git a/index.html b/index.html
index 7db3f9b..f641f3c 100644
--- a/index.html
+++ b/index.html
@@ -32,7 +32,10 @@ <h3>Folder containing PDFs</h3>
     <br/><br/>
 
     <div class="button" id="button">
-      <button class="btn btn-primary" id="ocr">OCR</button>
+      <button class="btn btn-primary" id="ocr" style="display:inline;">OCR</button>
+    </div>
+    <div class="waiting" id="waiting" style="display:none;">
+      <p>Reticulating splines...</p>
     </div>
 
     <br/><br/>
diff --git a/ochre.js b/ochre.js
index e395d0d..cd71c9f 100644
--- a/ochre.js
+++ b/ochre.js
@@ -22,30 +22,36 @@ function setlocation() {
 }
 
 function ocr() {
-  buttonBlock = document.getElementById("ocr");
+  buttonBlock = document.getElementById("button");
   buttonBlock.style.display = "none";
+  waitingBlock = document.getElementById("waiting");
+  waitingBlock.style.display = "inline";
   fs.readdir(document.getElementById("pdfdir").value, function (err, files) {
     if (err) {
       return console.log("Couldn't parse directory path.");
     }
     files.forEach(function (file) {
-        let input = path.join(document.getElementById("pdfdir").value, file);
-        let tempdirObject = tmp.dirSync();
-        let tempdir = tempdirObject.name;
-        let outpath = path.join(tempdir, "out-%05d.png");
-        execSync(commandJoin([path.join("win","gs","bin","gswin64c.exe"), "-o", path.join(tempdir, "%05d.png"), "-sDEVICE=png16m",
-           "-r300", "-dPDFFitPage=true", input]));
-        glob(path.join(tempdir, "*.png"), function (er, files) {
-          files.forEach(f => execSync(commandJoin([path.join("win","Tesseract-OCR","tesseract.exe"), f, path.join(tempdir, path.parse(f).name), "pdf"])));
+      let input = path.join(document.getElementById("pdfdir").value, file);
+      let tempdirObject = tmp.dirSync();
+      let tempdir = tempdirObject.name;
+      execSync([path.join("win","gs","bin","gswin64c.exe"), "-o", path.join(tempdir, "%05d.png"), "-sDEVICE=png16m", "-r300", "-dPDFFitPage=true", input].map(x => `"${x}"`).join(' '))
+      var itemsProcessed = 0;
+      glob(path.join(tempdir, "*.png"), function (er, files) {
+        files.forEach(f => {
+          execSync(commandJoin([path.join("win","Tesseract-OCR","tesseract.exe"), f, path.join(tempdir, path.parse(f).name), "pdf"]));
+          itemsProcessed++;
+          if(itemsProcessed === files.length) {
+            let joined_file = path.join(tempdir, "joined.pdf");
+            execSync(commandJoin([path.join("win","PDFtk","bin","pdftk.exe"), path.join(tempdir, "*.pdf"), "cat", "output", joined_file]));
+            let output = input.concat('.ocr.pdf')
+            execSync(commandJoin([path.join("win","gs","bin","gswin64c.exe"), "-sDEVICE=pdfwrite", "-sPAPERSIZE=letter", "-dFIXEDMEDIA", "-dPDFFitPage", "-o", output, joined_file]));
+            buttonBlock.style.display = "block";
+            waitingBlock.style.display = "none";
+          }
         });
-        let pdfs = glob.sync(path.join(tempdir, "*.pdf")).sort();
-        let joined_file = path.join(tempdir, "joined.pdf");
-        execSync(commandJoin([path.join("win","PDFtk","bin","pdftk.exe"), pdfs, "cat", "output", joined_file]));
-        let output = input.concat('.ocr.pdf')
-        execSync(commandJoin([path.join("win","gs","bin","gswin64.exe"), "-sDEVICE=pdfwrite", "-sPAPERSIZE=letter", "-dFIXEDMEDIA", "-dPDFFitPage", "-o", output, joined_file]));
+      });
     });
   });
-  buttonBlock.style.display = "block";
 }
 
 document.getElementById("ocr").addEventListener("click", ocr);