diff --git a/content/posts/2019-02.md b/content/posts/2019-02.md
index e436996b2..187cbf832 100644
--- a/content/posts/2019-02.md
+++ b/content/posts/2019-02.md
@@ -531,4 +531,16 @@ Error sending email:
 - Bosede from IITA said we can use "SOCIAL SCIENCE & AGRIBUSINESS" in their new IITA theme field to be consistent with other places they are using it
 - Run all system updates on DSpace Test (linode19) and reboot it
 
+## 2019-02-12
+
+- I notice that [DSpace 6 has included a new JAR-based PDF thumbnailer based on PDFBox](https://jira.duraspace.org/browse/DS-3052), I wonder how good its thumbnails are and how it handles CMYK PDFs
+- On a similar note, I wonder if we could use the performance-focused [libvps](https://libvips.github.io/libvips/) and the third-party [jlibvips Java library](https://github.com/codecitizen/jlibvips/) in DSpace
+- Testing the `vipsthumbnail` command line tool with [this CGSpace item that uses CMYK](https://cgspace.cgiar.org/handle/10568/51999):
+
+```
+$ vipsthumbnail alc_contrastes_desafios.pdf -s 300 -o '%s.jpg[Q=92,optimize_coding,strip]'
+```
+
+- (DSpace 5 appears to use JPEG 92 quality so I do the same)
+
 <!-- vim: set sw=2 ts=2: -->
diff --git a/docs/2019-02/index.html b/docs/2019-02/index.html
index b2d905d47..a2229d356 100644
--- a/docs/2019-02/index.html
+++ b/docs/2019-02/index.html
@@ -42,7 +42,7 @@ sys     0m1.979s
 <meta property="og:type" content="article" />
 <meta property="og:url" content="https://alanorth.github.io/cgspace-notes/2019-02/" />
 <meta property="article:published_time" content="2019-02-01T21:37:30&#43;02:00"/>
-<meta property="article:modified_time" content="2019-02-10T15:42:34&#43;02:00"/>
+<meta property="article:modified_time" content="2019-02-11T11:17:27&#43;02:00"/>
 
 <meta name="twitter:card" content="summary"/>
 <meta name="twitter:title" content="February, 2019"/>
@@ -89,9 +89,9 @@ sys     0m1.979s
   "@type": "BlogPosting",
   "headline": "February, 2019",
   "url": "https://alanorth.github.io/cgspace-notes/2019-02/",
-  "wordCount": "2817",
+  "wordCount": "2900",
   "datePublished": "2019-02-01T21:37:30&#43;02:00",
-  "dateModified": "2019-02-10T15:42:34&#43;02:00",
+  "dateModified": "2019-02-11T11:17:27&#43;02:00",
   "author": {
     "@type": "Person",
     "name": "Alan Orth"
@@ -758,6 +758,21 @@ Please see the DSpace documentation for assistance.
 <li>Run all system updates on DSpace Test (linode19) and reboot it</li>
 </ul>
 
+<h2 id="2019-02-12">2019-02-12</h2>
+
+<ul>
+<li>I notice that <a href="https://jira.duraspace.org/browse/DS-3052">DSpace 6 has included a new JAR-based PDF thumbnailer based on PDFBox</a>, I wonder how good its thumbnails are and how it handles CMYK PDFs</li>
+<li>On a similar note, I wonder if we could use the performance-focused <a href="https://libvips.github.io/libvips/">libvps</a> and the third-party <a href="https://github.com/codecitizen/jlibvips/">jlibvips Java library</a> in DSpace</li>
+<li>Testing the <code>vipsthumbnail</code> command line tool with <a href="https://cgspace.cgiar.org/handle/10568/51999">this CGSpace item that uses CMYK</a>:</li>
+</ul>
+
+<pre><code>$ vipsthumbnail alc_contrastes_desafios.pdf -s 300 -o '%s.jpg[Q=92,optimize_coding,strip]'
+</code></pre>
+
+<ul>
+<li>(DSpace 5 appears to use JPEG 92 quality so I do the same)</li>
+</ul>
+
 <!-- vim: set sw=2 ts=2: -->
 
   
diff --git a/docs/sitemap.xml b/docs/sitemap.xml
index cfa3c971b..02cb3f666 100644
--- a/docs/sitemap.xml
+++ b/docs/sitemap.xml
@@ -4,7 +4,7 @@
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/2019-02/</loc>
-    <lastmod>2019-02-10T15:42:34+02:00</lastmod>
+    <lastmod>2019-02-11T11:17:27+02:00</lastmod>
   </url>
   
   <url>
@@ -209,7 +209,7 @@
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/</loc>
-    <lastmod>2019-02-10T15:42:34+02:00</lastmod>
+    <lastmod>2019-02-11T11:17:27+02:00</lastmod>
     <priority>0</priority>
   </url>
   
@@ -220,7 +220,7 @@
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
-    <lastmod>2019-02-10T15:42:34+02:00</lastmod>
+    <lastmod>2019-02-11T11:17:27+02:00</lastmod>
     <priority>0</priority>
   </url>
   
@@ -232,13 +232,13 @@
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/posts/</loc>
-    <lastmod>2019-02-10T15:42:34+02:00</lastmod>
+    <lastmod>2019-02-11T11:17:27+02:00</lastmod>
     <priority>0</priority>
   </url>
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/tags/</loc>
-    <lastmod>2019-02-10T15:42:34+02:00</lastmod>
+    <lastmod>2019-02-11T11:17:27+02:00</lastmod>
     <priority>0</priority>
   </url>