diff --git a/doc/check-certificates.d/notification.avif b/doc/check-certificates.d/notification.avif
new file mode 100644
index 0000000..a458b7c
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diff --git a/doc/check-certificates.d/notification.svg b/doc/check-certificates.d/notification.svg
deleted file mode 100644
index e1d8baa..0000000
--- a/doc/check-certificates.d/notification.svg
+++ /dev/null
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-     <path id="path945" d="m3.3407-0.52096c0.034969-0.00777 0.038854 0.015542 0.041445 0.041445 0.098431 1.8054 0.85998 3.1744 1.8689 4.1108 1.0089 0.93639 2.3636 1.6941 4.274 1.6604-3.5772 1.4247-7.337-1.9984-6.1856-5.8126"/>
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-</tspan><tspan id="tspan2181" x="180" y="25.85">
-</tspan><tspan id="tspan2183" x="180" y="40.85">A certificate on MikroTik has been renewed.
-</tspan><tspan id="tspan2185" x="180" y="55.85">
-</tspan><tspan id="tspan2187" x="180" y="70.85">Name:        example.com
-</tspan><tspan id="tspan2189" x="180" y="85.85">CommonName:  example.com
-</tspan><tspan id="tspan2191" x="180" y="100.85">Private key: available
-</tspan><tspan id="tspan2193" x="180" y="115.85">Fingerprint: cc54cdd01fcd7698ecb71213874be776906eb33d26cd57754d168632f14c4c8b
-</tspan><tspan id="tspan2195" x="180" y="130.85">Issuer:      R3
-</tspan><tspan id="tspan2197" x="180" y="145.85">Validity:    may/22/2021 22:29:34 to aug/20/2021 22:29:34
-</tspan><tspan id="tspan2199" x="180" y="160.85">Expires in:  11w 5d 08:18:06</tspan></text>
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diff --git a/doc/check-certificates.md b/doc/check-certificates.md
index 5198e52..e8c295a 100644
--- a/doc/check-certificates.md
+++ b/doc/check-certificates.md
@@ -14,7 +14,7 @@ certificates that are still about to expire.
 
 ### Sample notification
 
-![check-certificates notification](check-certificates.d/notification.svg)
+![check-certificates notification](check-certificates.d/notification.avif)
 
 Requirements and installation
 -----------------------------