diff --git a/public/avatar/8c64fe.jpg b/public/avatar/8c64fe.jpg
index c1f16571..a4534e72 100644
Binary files a/public/avatar/8c64fe.jpg and b/public/avatar/8c64fe.jpg differ
diff --git a/public/avatar/a2c9ca.jpg b/public/avatar/a2c9ca.jpg
index 5d983bc4..80ca88fc 100644
Binary files a/public/avatar/a2c9ca.jpg and b/public/avatar/a2c9ca.jpg differ
diff --git a/public/avatar/c8ddf7.jpg b/public/avatar/c8ddf7.jpg
index b4235c04..465edf58 100644
Binary files a/public/avatar/c8ddf7.jpg and b/public/avatar/c8ddf7.jpg differ
diff --git a/public/sponsor/cookie4.jpg b/public/sponsor/cookie4.jpg
index 94d8ba3b..c95bcd20 100644
Binary files a/public/sponsor/cookie4.jpg and b/public/sponsor/cookie4.jpg differ
diff --git a/public/sponsor/gonokami.png b/public/sponsor/gonokami.png
old mode 100755
new mode 100644
index ac3ca606..d693481d
Binary files a/public/sponsor/gonokami.png and b/public/sponsor/gonokami.png differ
diff --git a/public/sponsor/hackmd.png b/public/sponsor/hackmd.png
old mode 100755
new mode 100644
index 78ce17b8..0daa1595
Binary files a/public/sponsor/hackmd.png and b/public/sponsor/hackmd.png differ
diff --git a/public/sponsor/hit.png b/public/sponsor/hit.png
old mode 100755
new mode 100644
index 409622ae..0881a8a1
Binary files a/public/sponsor/hit.png and b/public/sponsor/hit.png differ
diff --git a/public/sponsor/iii.png b/public/sponsor/iii.png
old mode 100755
new mode 100644
index d6a7cf19..07dad53f
Binary files a/public/sponsor/iii.png and b/public/sponsor/iii.png differ
diff --git a/public/sponsor/line.png b/public/sponsor/line.png
old mode 100755
new mode 100644
index 727efdf9..ff9a18de
Binary files a/public/sponsor/line.png and b/public/sponsor/line.png differ
diff --git a/public/sponsor/ocf.png b/public/sponsor/ocf.png
old mode 100755
new mode 100644
index c82dade6..4453c81d
Binary files a/public/sponsor/ocf.png and b/public/sponsor/ocf.png differ
diff --git a/public/sponsor/zyxel.png b/public/sponsor/zyxel.png
index fba1cd44..8bd7b806 100644
Binary files a/public/sponsor/zyxel.png and b/public/sponsor/zyxel.png differ