diff --git a/go.mod b/go.mod
index bfbc6cb..8d8a253 100644
--- a/go.mod
+++ b/go.mod
@@ -23,7 +23,7 @@ require (
 
 // Use this trick to test local Mycomarkup changes, replace the path with yours,
 // but do not commit the change to the path:
-//  replace github.com/bouncepaw/mycomarkup/v4 v4.3.0 => "/Users/bouncepaw/GolandProjects/mycomarkup"
+  replace github.com/bouncepaw/mycomarkup/v4 v4.3.0 => "/Users/bouncepaw/GolandProjects/mycomarkup"
 
 // Use this utility every time Mycomarkup gets a major update:
 // https://github.com/marwan-at-work/mod
diff --git a/interwiki/interwiki.go b/interwiki/interwiki.go
index da622a7..35c73a0 100644
--- a/interwiki/interwiki.go
+++ b/interwiki/interwiki.go
@@ -32,9 +32,16 @@ func Init() {
 
 func HrefLinkFormatFor(prefix string) string {
 	if wiki, ok := theMap.byName[prefix]; ok {
-		return wiki.LinkFormat
+		return wiki.LinkHrefFormat
 	}
-	return "{NAME}"
+	return "{NAME}" // TODO: error
+}
+
+func ImgSrcFormatFor(prefix string) string {
+	if wiki, ok := theMap.byName[prefix]; ok {
+		return wiki.ImgSrcFormat
+	}
+	return "{NAME}" // TODO: error
 }
 
 func readInterwiki() ([]Wiki, error) {
diff --git a/interwiki/wiki.go b/interwiki/wiki.go
index a1595db..a2b33e0 100644
--- a/interwiki/wiki.go
+++ b/interwiki/wiki.go
@@ -48,12 +48,12 @@ type Wiki struct {
 	// URL is the address of the wiki.
 	URL string `json:"url"`
 
-	// LinkFormat is a format string for incoming interwiki links. The format strings should look like this:
-	//     http://wiki.example.org/view/%s
-	// where %s is where text will be inserted. No other % instructions are supported yet. They will be added once we learn of their use cases.
+	// LinkHrefFormat is a format string for interwiki links. See Mycomarkup internal docs hidden deep inside for more information.
 	//
-	// This field is optional. For other wikis, it is automatically set to <URL>/%s; for Mycorrhiza wikis, it is automatically set to <URL>/hypha/%s.
-	LinkFormat string `json:"link_format"`
+	// This field is optional. For other wikis, it is automatically set to <URL>/{NAME}; for Mycorrhiza wikis, it is automatically set to <URL>/hypha/{NAME}}.
+	LinkHrefFormat string `json:"link_href_format"`
+
+	ImgSrcFormat string `json:"img_src_format"`
 
 	// Description is a plain-text description of the wiki.
 	Description string `json:"description"`
@@ -95,12 +95,21 @@ func (w *Wiki) canonize() {
 		w.Names[i] = util.CanonicalName(prefix)
 	}
 
-	if w.LinkFormat == "" {
+	if w.LinkHrefFormat == "" {
 		switch w.Engine {
 		case Mycorrhiza:
-			w.LinkFormat = fmt.Sprintf("%s/hypha/%%s", w.URL)
+			w.LinkHrefFormat = fmt.Sprintf("%s/hypha/{NAME}", w.URL)
 		default:
-			w.LinkFormat = fmt.Sprintf("%s/%%s", w.URL)
+			w.LinkHrefFormat = fmt.Sprintf("%s/{NAME}", w.URL)
+		}
+	}
+
+	if w.ImgSrcFormat == "" {
+		switch w.Engine {
+		case Mycorrhiza:
+			w.ImgSrcFormat = fmt.Sprintf("%s/binary/{NAME}", w.URL)
+		default:
+			w.ImgSrcFormat = fmt.Sprintf("%s/{NAME}", w.URL)
 		}
 	}
 }
diff --git a/shroom/mycomarkup_options.go b/shroom/mycomarkup_options.go
index a5ed126..28ad906 100644
--- a/shroom/mycomarkup_options.go
+++ b/shroom/mycomarkup_options.go
@@ -48,6 +48,6 @@ func MarkupOptions(hyphaName string) options.Options {
 			return "/binary/" + util.CanonicalName(hyphaName)
 		},
 		LinkHrefFormatForInterwikiPrefix: interwiki.HrefLinkFormatFor,
-		ImgSrcFormatForInterwikiPrefix:   interwiki.HrefLinkFormatFor, // TODO: dewrong
+		ImgSrcFormatForInterwikiPrefix:   interwiki.ImgSrcFormatFor,
 	}.FillTheRest()
 }