Index: makefile
==================================================================
--- makefile
+++ makefile
@@ -59,10 +59,11 @@
 	fossil clean code-docs/
 
 publish: check-env
 publish: ## Sync all HTML and PDF stuff to the public web server (does not rebuild any files)
 	raco pollen publish
+	./util/relativize ~/Desktop/publish/
 	rsync -av ~/Desktop/publish/ -e 'ssh -p $(WEB_SRV_PORT)' $(LOCALYARN_SRV) \
 		--delete \
 		--exclude=drafts \
 		--exclude=code-docs \
 		--exclude=util \

ADDED   util/relativize
Index: util/relativize
==================================================================
--- util/relativize
+++ util/relativize
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+# Licensed under the terms of the Blue Oak Model License 1.0.0
+# https://blueoakcouncil.org/license/1.0.0
+
+# The HTML generated assumes the whole site lives in the domain root. This script converts all links
+# and image sources to relative URLs, so things don't break when accessed from within a subfolder of
+# a live web server. (See ‘publish’ target of makefile)
+
+# Stop on any error, forbid uninitialized vars
+set -eu
+
+# First parameter is used as working dir, defaults to ./
+base_dir=${1:-"./"}
+
+# Ensure directory name ends with a slash
+[[ "${base_dir}" != */ ]] && base_dir="${base_dir}/"
+
+# Ensure directory exists
+if [[ ! -d "${base_dir}" ]]; then
+    echo "[$(date +'%Y-%m-%dT%H:%M:%S%z')]: ${base_dir} not a directory!" >&2
+    exit 1
+fi
+
+# Root folder: remove leading / from href and src attributes
+sed -i '' -- 's/href=\"\//href=\"/g' "${base_dir}"*.html
+sed -i '' -- 's/src=\"\//src=\"/g' "${base_dir}"*.html
+
+# subfolders: replace leading / with ../ in href and src attributes
+sed -i '' -- 's/href=\"\//href=\"..\//g' "${base_dir}"articles/*.html
+sed -i '' -- 's/src=\"\//src=\"..\//g' "${base_dir}"articles/*.html
+sed -i '' -- 's/href=\"\//href=\"..\//g' "${base_dir}"series/*.html
+sed -i '' -- 's/src=\"\//src=\"..\//g' "${base_dir}"series/*.html