diff --git a/index.js b/index.js
index 2836910..c46528b 100644
--- a/index.js
+++ b/index.js
@@ -2,6 +2,7 @@
 
 const strToStream = require('string-to-stream')
 const spawn = require('child_process').spawn
+const spawnSync = require('child_process').spawnSync
 const through = require('through2')
 const fse = require('fs-extra')
 const temp = require('temp')
@@ -130,6 +131,27 @@ function latex(src, options) {
       })
     }
 
+    /**
+     * Indexing after each LaTeX pass
+     */
+
+    const indexCmd = options.makeindex ? 'makeindex' : false
+    var   indexArgs = [];
+
+    if (options.indexStyle) {
+      fs.writeFileSync(path.join(tempPath, 'texput.ist'), options.indexStyle, 'utf8');
+      indexArgs.push('-g');
+      indexArgs.push('-s');
+      indexArgs.push('texput.ist');
+    }
+
+    indexArgs.push('-o');
+    indexArgs.push('texput.ind');
+    indexArgs.push('texput.idx');
+
+    const indexOpts = {cwd: tempPath}
+
+
     /**
      * Runs a LaTeX child process on the document stream
      * and then decides whether it needs to do it again.
@@ -158,6 +180,11 @@ function latex(src, options) {
           return
         }
 
+        if (indexCmd !== false) {
+          let _indexResult = spawnSync(indexCmd, indexArgs, indexOpts)
+        }
+
+
         completedPasses++
 
         // Schedule another run if necessary.
@@ -186,4 +213,4 @@ function latex(src, options) {
   return outputStream
 }
 
-module.exports = latex
+module.exports = latex
\ No newline at end of file
diff --git a/readme.md b/readme.md
index eb40756..4592ea4 100644
--- a/readme.md
+++ b/readme.md
@@ -41,5 +41,9 @@ latex(input).pipe(output)
 
 **options.errorLogs** \[String] - The path to the file where you want to save the contents of the error log to.
 
+**options.makeindex** \[Bool] - if true, makeindex will be run after every pass.
+
+**options.indexStyle** \[String] - Index style file, will be temporary stored as a file and passed to makeindex as .sty file.
+
 ## License
 MIT