adding a resample notebook to the pdf-toolkit

pdf-toolkit/resample.ipynb

@@ -0,0 +1,74 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Resample (thanks OSP!) using GS (ghostscript)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "GPL Ghostscript 9.27 (2019-04-04)\n",
+      "Copyright (C) 2018 Artifex Software, Inc.  All rights reserved.\n",
+      "This software is supplied under the GNU AGPLv3 and comes with NO WARRANTY:\n",
+      "see the file COPYING for details.\n",
+      "Processing pages 1 through 1.\n",
+      "Page 1\n",
+      "Loading NimbusMonoPS-Regular font from /usr/share/ghostscript/9.27/Resource/Font/NimbusMonoPS-Regular... 4732016 3198530 2340840 976702 4 done.\n"
+     ]
+    }
+   ],
+   "source": [
+    "!gs \\\n",
+    "  -o \"resampled.pdf\" \\\n",
+    "  -sDEVICE=pdfwrite \\\n",
+    "  -dDownsampleColorImages=true \\\n",
+    "  -dDownsampleGrayImages=true \\\n",
+    "  -dDownsampleMonoImages=true \\\n",
+    "  -dColorImageResolution=300 \\\n",
+    "  -dGrayImageResolution=300 \\\n",
+    "  -dMonoImageResolution=300 \\\n",
+    "  -dColorImageDownsampleThreshold=1.0 \\\n",
+    "  -dGrayImageDownsampleThreshold=1.0 \\\n",
+    "  -dMonoImageDownsampleThreshold=1.0 \\\n",
+    "   \"pdf/test.pdf\""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.7.3"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 4
+}