diff --git a/go.mod b/go.mod
index 2c47779..7a90445 100644
--- a/go.mod
+++ b/go.mod
@@ -3,13 +3,16 @@ module github.com/issue9/webfilter
 go 1.21
 
 require (
+	github.com/google/uuid v1.6.0
 	github.com/issue9/assert/v4 v4.1.1
-	github.com/issue9/web v0.87.4
+	github.com/issue9/version v1.0.8
+	github.com/issue9/web v0.87.7
 )
 
 require (
-	github.com/issue9/cache v0.9.2 // indirect
+	github.com/issue9/cache v0.10.0 // indirect
 	github.com/issue9/config v0.6.2 // indirect
+	github.com/issue9/errwrap v0.3.2 // indirect
 	github.com/issue9/localeutil v0.26.5 // indirect
 	github.com/issue9/scheduled v0.19.3 // indirect
 	golang.org/x/text v0.14.0 // indirect
diff --git a/go.sum b/go.sum
index d452315..ba04b1c 100644
--- a/go.sum
+++ b/go.sum
@@ -1,14 +1,20 @@
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/issue9/assert/v4 v4.1.1 h1:OhPE8SB8n/qZCNGLQa+6MQtr/B3oON0JAVj68k8jJlc=
 github.com/issue9/assert/v4 v4.1.1/go.mod h1:v7qDRXi7AsaZZNh8eAK2rkLJg5/clztqQGA1DRv9Lv4=
-github.com/issue9/cache v0.9.2 h1:tMvXPhGKBXbSIMHi5qzsdwmQjf7qGYBo1W/LLTDHw9s=
-github.com/issue9/cache v0.9.2/go.mod h1:gFTzhzGGAc6Dpon9fbWtJNCjeG3QiLs+bFc8j5z98Qg=
+github.com/issue9/cache v0.10.0 h1:pgw4kbAFUeUu9pOKcNSdc+BhhXwdRFzjwAvWAX2BWHc=
+github.com/issue9/cache v0.10.0/go.mod h1:0s9j7qiKv4uWYqz0D2N2H7bIBvmtD+903h5GqnxW6i4=
 github.com/issue9/config v0.6.2 h1:znXvsk6gh0wm+fTEn0zUjjramKuOLY8Jt0ZTxp4GIkc=
 github.com/issue9/config v0.6.2/go.mod h1:S97FVtZim4rPB+M49EoOuBajaqY4ULQbqltZmZ99+Dc=
+github.com/issue9/errwrap v0.3.2 h1:7KEme9Pfe75M+sIMcPCn/DV90wjnOcRbO4DXVAHj3Fw=
+github.com/issue9/errwrap v0.3.2/go.mod h1:KcCLuUGiffjooLCUjL89r1cyO8/HT/VRcQrneO53N3A=
 github.com/issue9/localeutil v0.26.5 h1:e78b6cOOtgzfb4g4U9uPLC8QyK6Lux+s7ZiQe+6iM1A=
 github.com/issue9/localeutil v0.26.5/go.mod h1:BJXJwcAT9CyyVZOlqfmq+B5FcPbqGxGjYnTYbVuiMM8=
 github.com/issue9/scheduled v0.19.3 h1:hI/8gh1SMH62inPVsrZazRBxc91RQT/YbnWr1S9se08=
 github.com/issue9/scheduled v0.19.3/go.mod h1:4OTuwC3QMRJLGRV8ImmRS2bqX58bDjKi2OAuzHcgJuQ=
-github.com/issue9/web v0.87.4 h1:BD6+ZjSCnlYS6G8j0xOJxmjsHkhaOAPP0Oe5OW3z+3M=
-github.com/issue9/web v0.87.4/go.mod h1:5nkr+8J/LD1WAyjA/4gmWgi3IOxRV37cR6c3EJ062b8=
+github.com/issue9/version v1.0.8 h1:IsNdDYdV8UGDGwwgp8H4RszJE0Ko26HjWg9pZzyOivs=
+github.com/issue9/version v1.0.8/go.mod h1:w8bQwODBOG5+iaS3qIJbElxxpp3Uo4x5F39qKBqwpdc=
+github.com/issue9/web v0.87.7 h1:Z2EUzAs/84x3EFZr7EuTxnlXcHE1X2of67eIq+7vfaE=
+github.com/issue9/web v0.87.7/go.mod h1:6RK59GaungHYQgTx4WDSSE0O9GJTT4RynhXgiQnPzJo=
 golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
 golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
diff --git a/validator/semver.go b/validator/semver.go
new file mode 100644
index 0000000..f70198a
--- /dev/null
+++ b/validator/semver.go
@@ -0,0 +1,74 @@
+// SPDX-FileCopyrightText: 2022-2024 caixw
+//
+// SPDX-License-Identifier: MIT
+
+package validator
+
+import "github.com/issue9/version"
+
+// Semver [semver] 版本号验证
+//
+// [semver]: https://semver.org/lang/zh-CN/
+func Semver(ver string) bool { return version.SemVerValid(ver) }
+
+// SemverCompatible 创建一个验证 [semver] 是否兼容 val 的验证器
+func SemverCompatible(ver string) func(string) bool {
+	semver, err := version.SemVer(ver)
+	if err != nil {
+		panic(err)
+	}
+
+	return func(v string) bool {
+		ok, err := semver.CompatibleString(v)
+		return err == nil && ok
+	}
+}
+
+// SemverGreat 判断版本号是否大于 ver
+func SemverGreat(ver string) func(string) bool {
+	semver, err := version.SemVer(ver)
+	if err != nil {
+		panic(err)
+	}
+
+	return func(val string) bool {
+		num, err := semver.CompareString(val)
+		return err == nil && num < 0
+	}
+}
+
+func SemverGreatEqual(ver string) func(string) bool {
+	semver, err := version.SemVer(ver)
+	if err != nil {
+		panic(err)
+	}
+
+	return func(val string) bool {
+		num, err := semver.CompareString(val)
+		return err == nil && num <= 0
+	}
+}
+
+func SemverLess(ver string) func(string) bool {
+	semver, err := version.SemVer(ver)
+	if err != nil {
+		panic(err)
+	}
+
+	return func(val string) bool {
+		num, err := semver.CompareString(val)
+		return err == nil && num > 0
+	}
+}
+
+func SemverLessEqual(ver string) func(string) bool {
+	semver, err := version.SemVer(ver)
+	if err != nil {
+		panic(err)
+	}
+
+	return func(val string) bool {
+		num, err := semver.CompareString(val)
+		return err == nil && num >= 0
+	}
+}
diff --git a/validator/semver_test.go b/validator/semver_test.go
new file mode 100644
index 0000000..a8f42b3
--- /dev/null
+++ b/validator/semver_test.go
@@ -0,0 +1,44 @@
+// SPDX-FileCopyrightText: 2022-2024 caixw
+//
+// SPDX-License-Identifier: MIT
+
+package validator
+
+import (
+	"testing"
+
+	"github.com/issue9/assert/v4"
+)
+
+func TestSemver(t *testing.T) {
+	a := assert.New(t, false)
+	a.True(Semver("1.0.0")).
+		False(Not(Semver)("1.0.0"))
+}
+
+func TestSemverCompatible(t *testing.T) {
+	a := assert.New(t, false)
+
+	v := SemverCompatible("1.0.0")
+	a.True(v("1.1.1")).False(v("2.0.1"))
+}
+
+func TestSemverGreat(t *testing.T) {
+	a := assert.New(t, false)
+
+	v := SemverGreat("1.0.0")
+	a.True(v("1.1.1")).False(v("1.0.0"))
+
+	v = SemverGreatEqual("1.0.0")
+	a.True(v("1.1.1")).True(v("1.0.0"))
+}
+
+func TestSemverLess(t *testing.T) {
+	a := assert.New(t, false)
+
+	v := SemverLess("2.0.0")
+	a.True(v("1.1.1")).False(v("2.0.0"))
+
+	v = SemverLessEqual("2.0.0")
+	a.True(v("1.1.1")).True(v("2.0.0"))
+}
diff --git a/validator/string.go b/validator/string.go
index c1d689c..19c70b3 100644
--- a/validator/string.go
+++ b/validator/string.go
@@ -10,6 +10,7 @@ import (
 	"net/url"
 	"strings"
 
+	"github.com/google/uuid"
 	"github.com/issue9/webfilter/gb11643"
 	"github.com/issue9/webfilter/gb32100"
 	"github.com/issue9/webfilter/internal/isbn"
@@ -38,17 +39,13 @@ func Email(val string) bool {
 }
 
 func IP4(val string) bool {
-	if ip, err := netip.ParseAddr(val); err == nil {
-		return ip.Is4()
-	}
-	return false
+	ip, err := netip.ParseAddr(val)
+	return err == nil && ip.Is4()
 }
 
 func IP6(val string) bool {
-	if ip, err := netip.ParseAddr(val); err == nil {
-		return ip.Is6()
-	}
-	return false
+	ip, err := netip.ParseAddr(val)
+	return err == nil && ip.Is6()
 }
 
 func IP(val string) bool {
@@ -85,9 +82,7 @@ func BankCard(val string) bool { return Luhn(val) }
 func Luhn(val string) bool { return luhn.IsValid([]byte(val)) }
 
 // HexColor 判断一个字符串是否为合法的 16 进制颜色表示法
-func HexColor(val string) bool { return hexColor([]byte(val)) }
-
-func hexColor(val []byte) bool {
+func HexColor(val string) bool {
 	if len(val) != 4 && len(val) != 7 {
 		return false
 	}
@@ -96,7 +91,12 @@ func hexColor(val []byte) bool {
 		return false
 	}
 
-	for _, v := range val[1:] {
+	return Hex(val[1:])
+}
+
+// Hex 是否符合 16 进制数字
+func Hex(val string) bool {
+	for _, v := range val {
 		switch {
 		case '0' <= v && v <= '9':
 		case 'a' <= v && v <= 'f':
@@ -116,7 +116,8 @@ func EndWith(suffix string) func(string) bool {
 	return func(s string) bool { return strings.HasSuffix(s, suffix) }
 }
 
-func Ascii(s string) bool {
+// ASCII ASCII 码
+func ASCII(s string) bool {
 	for _, c := range s {
 		if c > 127 {
 			return false
@@ -125,6 +126,7 @@ func Ascii(s string) bool {
 	return true
 }
 
+// Alpha 全部都是英文字符
 func Alpha(s string) bool {
 	for _, c := range s {
 		if c < 'a' || c > 'z' && (c < 'A' || c > 'Z') {
@@ -162,10 +164,11 @@ func CNMobile(val string) bool {
 		return false
 	}
 
-	return isNumber(val[1:])
+	return Digit(val[1:])
 }
 
-func isNumber(val string) bool {
+// Digit 判断字符串是否都为数字
+func Digit(val string) bool {
 	for _, c := range val[1:] {
 		if c < '0' || c > '9' {
 			return false
@@ -173,3 +176,6 @@ func isNumber(val string) bool {
 	}
 	return true
 }
+
+// UUID 验证 UUID 格式是否正确
+func UUID(val string) bool { return uuid.Validate(val) == nil }
diff --git a/validator/string_test.go b/validator/string_test.go
index b8eabec..2e2da58 100644
--- a/validator/string_test.go
+++ b/validator/string_test.go
@@ -93,11 +93,11 @@ func TestURL(t *testing.T) {
 	a.True(URL("https://[::1]/path/index.go?arg1=val1"))
 }
 
-func TestAscii(t *testing.T) {
+func TestASCII(t *testing.T) {
 	a := assert.New(t, false)
 
-	a.True(Ascii("abc"))
-	a.False(Ascii("\u1000"))
+	a.True(ASCII("abc"))
+	a.False(ASCII("\u1000"))
 }
 
 func TestAlpha(t *testing.T) {
diff --git a/validator/validator.go b/validator/validator.go
index 7f53ce5..4f711e9 100644
--- a/validator/validator.go
+++ b/validator/validator.go
@@ -7,7 +7,10 @@
 // [web.filter]: https://pkg.go.dev/github.com/issue9/web#Filter
 package validator
 
-import "reflect"
+import (
+	"encoding/json"
+	"reflect"
+)
 
 // And 以与的形式串联多个验证器函数
 func And[T any](v ...func(T) bool) func(T) bool {
@@ -48,3 +51,5 @@ func Equal[T comparable](v T) func(T) bool {
 func NilOr[T any](v func(T) bool) func(T) bool {
 	return Or(func(v T) bool { return reflect.ValueOf(v).IsNil() }, v)
 }
+
+func JSON(val []byte) bool { return json.Valid(val) }