From 3e304dca5595be5257c70ff2e9fc10bebbcdeadd Mon Sep 17 00:00:00 2001
From: bashrc <bob@libreserver.org>
Date: Sun, 26 Jul 2026 17:22:00 +0100
Subject: [PATCH] Apply dithering to shared item images

---
 src/daemon_post_receive.py | 8 +++++---
 src/media.py               | 2 +-
 src/shares.py              | 8 +++++---
 3 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/src/daemon_post_receive.py b/src/daemon_post_receive.py
index b7a26786a..657d2cdf3 100644
--- a/src/daemon_post_receive.py
+++ b/src/daemon_post_receive.py
@@ -1911,8 +1911,8 @@ def _receive_new_post_process(self, post_type: str, path: str, headers: {},
 
     # Note: a .temp extension is used here so that at no time is
     # an image with metadata publicly exposed, even for a few mS
-    filename_base = \
-        acct_dir(base_dir, nickname, domain) + '/upload.temp'
+    account_dir = acct_dir(base_dir, nickname, domain)
+    filename_base = account_dir + '/upload.temp'
 
     filename, attachment_media_type = \
         save_media_in_form_post(media_bytes, debug, filename_base)
@@ -1925,8 +1925,10 @@ def _receive_new_post_process(self, post_type: str, path: str, headers: {},
     exif_json: list[dict] = []
     if filename:
         if is_image_file(filename):
+            dither_filename = account_dir + '/.ditherImage'
+            apply_dithering = is_a_file(dither_filename)
             # convert to low bandwidth if needed
-            if low_bandwidth:
+            if low_bandwidth or apply_dithering:
                 print('Converting to low bandwidth ' + filename)
                 convert_image_to_low_bandwidth(filename)
             backup_filename = filename + '.backup'
diff --git a/src/media.py b/src/media.py
index 551b347f7..ced223d8d 100644
--- a/src/media.py
+++ b/src/media.py
@@ -496,7 +496,7 @@ def convert_image_to_low_bandwidth(image_filename: str) -> None:
 
     cmd = \
         "convert \"" + safe_system_string(image_filename) + "\" " + \
-        "-resize 800 -set option:distort:viewport '%wx%h+0+0' " + \
+        "-resize 1000 -set option:distort:viewport '%wx%h+0+0' " + \
         '-colorspace CMYK -separate null:  \\( -size 2x2 xc: ' + \
         '\\( +clone -negate \\) +append \\( +clone -negate \\) ' + \
         '-append \\) -virtual-pixel tile -filter gaussian ' + \
diff --git a/src/shares.py b/src/shares.py
index b2920c39b..c749feccc 100644
--- a/src/shares.py
+++ b/src/shares.py
@@ -352,8 +352,8 @@ def add_share(base_dir: str,
                             system_language):
         print('Shared item was filtered due to content')
         return
-    shares_filename = \
-        acct_dir(base_dir, nickname, domain) + '/' + shares_file_type + '.json'
+    account_dir = acct_dir(base_dir, nickname, domain)
+    shares_filename = account_dir + '/' + shares_file_type + '.json'
     shares_json = {}
     if is_a_file(shares_filename):
         shares_json = load_json(shares_filename)
@@ -393,10 +393,12 @@ def add_share(base_dir: str,
                 makedir(base_dir + '/sharefiles/' + nickname)
             item_idfile = base_dir + '/sharefiles/' + nickname + '/' + item_id
             formats = get_image_extensions()
+            dither_filename = account_dir + '/.ditherImage'
+            apply_dithering = is_a_file(dither_filename)
             for ext in formats:
                 if not image_filename.endswith('.' + ext):
                     continue
-                if low_bandwidth:
+                if low_bandwidth or apply_dithering:
                     convert_image_to_low_bandwidth(image_filename)
                 exif_json: list[dict] = []
                 process_meta_data(base_dir, nickname, domain,