@@ -1470,7 +1470,11 @@ a["mediaType"] = "image/png"
 		if ava := user.Options.Avatar; ava != "" {
 			a["url"] = ava
 		} else {
-			a["url"] = fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
+			u := fmt.Sprintf("https://%s/a?a=%s", serverName, url.QueryEscape(user.URL))
+			if user.Options.Avahex {
+				u += "&hex=1"
+			}
+			a["url"] = u
 		}
 		j["icon"] = a
 	} else {

@@ -66,7 +66,7 @@ avatarcolors[i][3] = byte(c >> 0 & 0xff)
 	}
 }
 
-func genAvatar(name string) []byte {
+func genAvatar(name string, hex bool) []byte {
 	h := sha512.New()
 	h.Write([]byte(name))
 	s := h.Sum(nil)
@@ -74,6 +74,27 @@ img := image.NewNRGBA(image.Rect(0, 0, 64, 64))
 	for i := 0; i < 64; i++ {
 		for j := 0; j < 64; j++ {
 			p := i*img.Stride + j*4
+			if hex {
+				tan := 0.577
+				if i < 32 {
+					if j < 17-int(float64(i)*tan) || j > 46+int(float64(i)*tan) {
+						img.Pix[p+0] = 0
+						img.Pix[p+1] = 0
+						img.Pix[p+2] = 0
+						img.Pix[p+3] = 255
+						continue
+					}
+				} else {
+					if j < 17-int(float64(64-i)*tan) || j > 46+int(float64(64-i)*tan) {
+						img.Pix[p+0] = 0
+						img.Pix[p+1] = 0
+						img.Pix[p+2] = 0
+						img.Pix[p+3] = 255
+						continue
+
+					}
+				}
+			}
 			xx := i/16*16 + j/16
 			x := s[xx]
 			if x < 64 {

@@ -51,10 +51,11 @@
 type UserOptions struct {
 	SkinnyCSS  bool   `json:",omitempty"`
 	OmitImages bool   `json:",omitempty"`
+	Avahex     bool   `json:",omitempty"`
+	MentionAll bool   `json:",omitempty"`
 	Avatar     string `json:",omitempty"`
 	MapLink    string `json:",omitempty"`
 	Reaction   string `json:",omitempty"`
-	MentionAll bool
 	Chats      int
 }
 

@@ -1,3 +1,4 @@
+//go:build openbsd
 // +build openbsd
 
 //

@@ -10,6 +10,8 @@ <p>about me:
 <p><textarea name="whatabout">{{ .WhatAbout }}</textarea>
 <p><label class="button" for="skinny">skinny layout:</label>
 <input tabindex=1 type="checkbox" id="skinny" name="skinny" value="skinny" {{ if .User.Options.SkinnyCSS }}checked{{ end }}><span></span>
+<p><label class="button" for="avahex">hex avatar:</label>
+<input tabindex=1 type="checkbox" id="avahex" name="avahex" value="avahex" {{ if .User.Options.Avahex }}checked{{ end }}><span></span>
 <p><label class="button" for="omitimages">omit images:</label>
 <input tabindex=1 type="checkbox" id="omitimages" name="omitimages" value="omitimages" {{ if .User.Options.OmitImages }}checked{{ end }}><span></span>
 <p><label class="button" for="mentionall">mention all:</label>

@@ -1107,6 +1107,11 @@ options.SkinnyCSS = true
 	} else {
 		options.SkinnyCSS = false
 	}
+	if r.FormValue("avahex") == "avahex" {
+		options.Avahex = true
+	} else {
+		options.Avahex = false
+	}
 	if r.FormValue("omitimages") == "omitimages" {
 		options.OmitImages = true
 	} else {
@@ -2104,7 +2109,8 @@ if debugMode {
 		loadAvatarColors()
 	}
 	n := r.FormValue("a")
-	a := genAvatar(n)
+	hex := r.FormValue("hex") == "1"
+	a := genAvatar(n, hex)
 	if !debugMode {
 		w.Header().Set("Cache-Control", "max-age="+somedays())
 	}