Add Rotate An Image To Be Oriented Upright as a workflow til

Author: jbranchaud

README.md

@@ -9,7 +9,7 @@ and pairing with smart people at Hashrocket.
 
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-_893 TILs and counting..._
+_894 TILs and counting..._
 
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@@ -1016,6 +1016,7 @@ _893 TILs and counting..._
 - [Import A Github Project Into CodeSandbox](workflow/import-a-github-project-into-codesandbox.md)
 - [Interactively Kill A Process With fkill](workflow/interactively-kill-a-process-with-fkill.md)
 - [Open Slack's Keyboard Shortcuts Reference Panel](workflow/open-slacks-keyboard-shortcuts-reference-panel.md)
+- [Rotate An Image To Be Oriented Upright](workflow/rotate-an-image-to-be-oriented-upright.md)
 - [Set Recurring Reminders In Slack](workflow/set-recurring-reminders-in-slack.md)
 - [Toggle Between Stories In Storybook](workflow/toggle-between-stories-in-storybook.md)
 

workflow/rotate-an-image-to-be-oriented-upright.md

@@ -0,0 +1,27 @@
+# Rotate An Image To Be Oriented Upright
+
+Many programs that display JPEG images will read the EXIF data for
+'Orientation' headers so that they can correctly display the image. Not all of
+them though. For instance, when a browser renders an `<img>` tag for such a
+JPEG image, it won't account for the 'Orientation' header and you might end up
+with a sideways image.
+
+You can normalize the orientation with the
+[`jhead`](https://www.sentex.ca/~mwandel/jhead/usage.html) utility which uses
+[`jpegtran`](https://linux.die.net/man/1/jpegtran) under the hood. This is done
+with the `-autorot` flag.
+
+```bash
+$ jhead -autorot my_image.jpeg
+```
+
+> Using the 'Orientation' tag of the Exif header, rotate the image so that it
+> is upright. The program 'jpegtran' is used to perform the rotation. After
+> rotation, the orientation tag of the Exif header is set to '1' (normal
+> orientation). The Exif thumbnail is also rotated.
+
+> This feature is especially useful with newer digital cameras [and
+> smartphones], which set the orientation field in the Exif header
+> automatically using a built in orientation sensor in the camera.
+
+The image will now be upright in all programs.