diff --git a/content/posts/archiving-instagram-posts/index.md b/content/posts/archiving-instagram-posts/index.md
index b1bdb575..a7f6085a 100644
--- a/content/posts/archiving-instagram-posts/index.md
+++ b/content/posts/archiving-instagram-posts/index.md
@@ -10,6 +10,7 @@ tags:
 topics:
 - IndieWeb
 summary: Archiving my Instagram account, and releasing the code that imported it to this Hugo-driven site.
+shortlink: insta
 ---
 
 I spent a little time this weekend reminding myself of what writing code is like (before I start work again on Tuesday, after [4 months travelling](https://adventure.awaits.us)). After my recent post on [leaving Meta's social networks](/posts/goodbye-big-social) I decided to create a script to convert the GDPR-provided archive of all my activity on Instagram into this blog.
diff --git a/todo.md b/todo.md
index ad5b2781..08a8ddc3 100644
--- a/todo.md
+++ b/todo.md
@@ -35,8 +35,8 @@ Things I might work on within my personal blog's software.
   - [x] Create suitable `_redirects` files
   - [x] Import pre-existing shortlinks
   - [x] Add shortlink as `<link rel="shortlink">` on all relevant pages
+  - [x] Add additional logic to _combine_ the redirects files as needed
   - [ ] Upload new redirects to byjp.fyi repo
-  - [ ] Add additional logic to _combine_ the redirects files as needed
 
 ### Done ✓
 
diff --git a/tools/redirects/split.bash b/tools/redirects/split.bash
deleted file mode 100755
index a0b85034..00000000
--- a/tools/redirects/split.bash
+++ /dev/null
@@ -1,16 +0,0 @@
-#!/bin/bash
-
-rm **/_redirects
-
-while IFS=$'\n' read -r line
-do
-  # Extract the absolute file path
-  outdir=$(dirname $(echo "$line" | cut -d " " -f1) | cut -d "/" -f2)
-
-  if [[ -n "$outdir" ]]; then
-    [[ ! -d $outdir ]] && mkdir -p $outdir
-    echo $line | cut -c $((${#outdir}+2))- >> "./$outdir/_redirects"
-  else
-    echo $line  >> "_redirects"
-  fi
-done < "${1:-/dev/stdin}"
diff --git a/tools/redirects/update-shortlinks.bash b/tools/redirects/update-shortlinks.bash
new file mode 100755
index 00000000..230c9306
--- /dev/null
+++ b/tools/redirects/update-shortlinks.bash
@@ -0,0 +1,44 @@
+#!/bin/bash
+# Usage:
+#  1. Build www.byjp.me
+#  2. Clone and enter a local copy of the byjp.fyi repo
+#  3. `cat www.byjp.me/public/index.redirects | www.byjp.me/tools/redirects/update-shortlinks.bash``
+#  4. `git commit -am "Update blog redirects" && git push`
+
+# This script assumes it is being executed at the root of the byjp.fyi repo
+gitRoot=$(git rev-parse --show-toplevel) || { echo "Please run inside the byjp.fyi git repo"; exit 1; }
+if [[ "$(git remote get-url origin)" != "https://github.com/by-jp/byjp.fyi.git" ]]; then
+  echo "This repo doesn't have the byjp.fyi repo as the origin"
+  exit 2
+fi
+cd $gitRoot
+
+# Prepare existing files for new _redirects info
+mv public/_redirects public/_redirects.previous
+find public -type f -iname "_redirects" -delete
+
+# Create local _redirects files
+while IFS=$'\n' read -r line
+do
+  # Extract the absolute file path
+  outdir=$(dirname $(echo "$line" | cut -d " " -f1) | cut -d "/" -f2)
+
+  if [[ -n "$outdir" ]]; then
+    [[ ! -d $outdir ]] && mkdir -p "public/$outdir"
+    echo $line | cut -c $((${#outdir}+2))- >> "public/$outdir/_redirects"
+  else
+    echo $line  >> "public/_redirects"
+  fi
+done < "${1:-/dev/stdin}"
+
+# Combine new (root) _redirects and _redirects.previous
+start_line=$(awk '/^# From blog/{print NR; exit}' public/_redirects.previous)
+end_line=$(awk 'NR > '"$start_line"' && /^#/{print NR; exit}' public/_redirects.previous)
+
+sed "$((start_line + 1)),$((end_line - 2))d" public/_redirects.previous > old_removed.txt
+awk 'NR=='"$((start_line + 1))"'{system("cat public/_redirects")} 1' old_removed.txt > public/_redirects.new
+
+# Remove temporary files
+mv public/_redirects.new public/_redirects
+rm public/_redirects.previous
+rm old_removed.txt