diff --git a/computer_design/image.html b/computer_design/image.html
index 859c1706119f51aadb1844a0b89f9a105d647ac2..8a8d901a4fb9b1f6678576c7f4eea175a962af75 100644
--- a/computer_design/image.html
+++ b/computer_design/image.html
@@ -2,6 +2,8 @@
<body>
<pre>
+<a href=../project_management/ender3v3.png>PNG</a> (uncompressed, e.g. 89 MB) vs <a href=../project_management/ender3v3.jpg>JPG</a> (compressed, e.g. 184 kB)
+
<a href=https://www.gimp.org>GIMP</a>
<a href=https://www.gimp.org/tutorials/GIMP_Quickies/#changing-the-size-filesize-of-a-jpeg>compress</a>
<a href=https://www.gimp.org/tutorials/GIMP_Quickies/#changing-the-size-dimensions-of-an-image-scale>resize</a>
@@ -10,8 +12,6 @@
<a href=https://imagemagick.org>ImageMagick</a>
list formats:
convert -list format
- JPG: compressed
- PNG: uncompressed
convert PNG to JPG:
convert input.png output.jpg
convert all PNGs to JPGs:
diff --git a/project_management/archive.html b/project_management/archive.html
index a61cf8221e632ca97871de518d22806aa7fdcd10..dc17d43a265c01fe20bce23477ddd63453678151 100755
--- a/project_management/archive.html
+++ b/project_management/archive.html
@@ -57,7 +57,7 @@ distributed version control system
<a href=https://linux.die.net/man/1/du>du</a> <a href=https://dev.yorhel.nl/ncdu>ncdu</a>
<a href=ender3v3.png>compress, resize pictures for Web</a>
<a href=http://academy.cba.mit.edu/classes/computer_design/image.html>ImageMagick, GIMP</a>
- JPG: compressed, PNG: uncompressed
+ <a href=ender3v3.png>PNG</a> (uncompressed, e.g. 89 MB) vs <a href=ender3v3.jpg>JPG</a> (compressed, e.g. 184 kB)
compress, encode vidoes for Web
<a href=http://academy.cba.mit.edu/classes/computer_design/video.html>ffmpeg</a>
diff --git a/project_management/ender3v3.jpg b/project_management/ender3v3.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..31099c4f9a01d2dbd85df2b924bcf2e7cecb24a1
Binary files /dev/null and b/project_management/ender3v3.jpg differ