diff --git a/pbs-api-types/Cargo.toml b/pbs-api-types/Cargo.toml
index 3bee23ba..cd5dc129 100644
--- a/pbs-api-types/Cargo.toml
+++ b/pbs-api-types/Cargo.toml
@@ -12,6 +12,7 @@ lazy_static = "1.4"
 libc = "0.2"
 nix = "0.19.1"
 openssl = "0.10"
+percent-encoding = "2.1"
 regex = "1.2"
 serde = { version = "1.0", features = ["derive"] }
 
diff --git a/pbs-api-types/src/lib.rs b/pbs-api-types/src/lib.rs
index bb5d152f..2ecd5170 100644
--- a/pbs-api-types/src/lib.rs
+++ b/pbs-api-types/src/lib.rs
@@ -4,6 +4,7 @@ use serde::{Deserialize, Serialize};
 use anyhow::bail;
 
 pub mod common_regex;
+pub mod percent_encoding;
 
 use proxmox_schema::{
     api, const_regex, ApiStringFormat, ApiType, ArraySchema, Schema, StringSchema, ReturnType,
diff --git a/pbs-api-types/src/percent_encoding.rs b/pbs-api-types/src/percent_encoding.rs
new file mode 100644
index 00000000..afe011e2
--- /dev/null
+++ b/pbs-api-types/src/percent_encoding.rs
@@ -0,0 +1,22 @@
+use percent_encoding::{utf8_percent_encode, AsciiSet};
+
+/// This used to be: `SIMPLE_ENCODE_SET` plus space, `"`, `#`, `<`, `>`, backtick, `?`, `{`, `}`
+pub const DEFAULT_ENCODE_SET: &AsciiSet = &percent_encoding::CONTROLS // 0..1f and 7e
+    // The SIMPLE_ENCODE_SET adds space and anything >= 0x7e (7e itself is already included above)
+    .add(0x20)
+    .add(0x7f)
+    // the DEFAULT_ENCODE_SET added:
+    .add(b' ')
+    .add(b'"')
+    .add(b'#')
+    .add(b'<')
+    .add(b'>')
+    .add(b'`')
+    .add(b'?')
+    .add(b'{')
+    .add(b'}');
+
+/// percent encode a url component
+pub fn percent_encode_component(comp: &str) -> String {
+    utf8_percent_encode(comp, percent_encoding::NON_ALPHANUMERIC).to_string()
+}