diff --git a/crates/oxc_linter/src/rules/unicorn/prefer_string_slice.rs b/crates/oxc_linter/src/rules/unicorn/prefer_string_slice.rs
index 0d415a28f62ae..227c1fa7ee511 100644
--- a/crates/oxc_linter/src/rules/unicorn/prefer_string_slice.rs
+++ b/crates/oxc_linter/src/rules/unicorn/prefer_string_slice.rs
@@ -34,7 +34,7 @@ declare_oxc_lint!(
     /// ```
     PreferStringSlice,
     pedantic,
-    pending
+    fix
 );
 
 impl Rule for PreferStringSlice {
@@ -57,7 +57,9 @@ impl Rule for PreferStringSlice {
             _ => return,
         };
 
-        ctx.diagnostic(prefer_string_slice_diagnostic(span, name.as_str()));
+        ctx.diagnostic_with_fix(prefer_string_slice_diagnostic(span, name.as_str()), |fixer| {
+            fixer.replace(span, "slice")
+        });
     }
 }
 
@@ -130,5 +132,17 @@ fn test() {
         r"foo.substring((10, bar))",
     ];
 
-    Tester::new(PreferStringSlice::NAME, pass, fail).test_and_snapshot();
+    let fix = vec![
+        ("foo.substr()", "foo.slice()"),
+        ("foo?.substr()", "foo?.slice()"),
+        ("foo.bar?.substring()", "foo.bar?.slice()"),
+        ("foo?.[0]?.substring()", "foo?.[0]?.slice()"),
+        ("foo.bar.substr?.()", "foo.bar.slice?.()"),
+        ("foo.bar?.substring?.()", "foo.bar?.slice?.()"),
+        ("foo.bar?.baz?.substr()", "foo.bar?.baz?.slice()"),
+        ("foo.bar?.baz.substring()", "foo.bar?.baz.slice()"),
+        ("foo.bar.baz?.substr()", "foo.bar.baz?.slice()"),
+    ];
+
+    Tester::new(PreferStringSlice::NAME, pass, fail).expect_fix(fix).test_and_snapshot();
 }
diff --git a/crates/oxc_linter/src/snapshots/prefer_string_slice.snap b/crates/oxc_linter/src/snapshots/prefer_string_slice.snap
index f1cad5d157582..0c020d21ac1da 100644
--- a/crates/oxc_linter/src/snapshots/prefer_string_slice.snap
+++ b/crates/oxc_linter/src/snapshots/prefer_string_slice.snap
@@ -6,297 +6,347 @@ source: crates/oxc_linter/src/tester.rs
  1 │ foo.substr()
    ·     ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:6]
  1 │ foo?.substr()
    ·      ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:10]
  1 │ foo.bar?.substring()
    ·          ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:11]
  1 │ foo?.[0]?.substring()
    ·           ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:9]
  1 │ foo.bar.substr?.()
    ·         ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:10]
  1 │ foo.bar?.substring?.()
    ·          ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:15]
  1 │ foo.bar?.baz?.substr()
    ·               ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:14]
  1 │ foo.bar?.baz.substring()
    ·              ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:14]
  1 │ foo.bar.baz?.substr()
    ·              ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr()
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr(1)
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr(1, 2)
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr(bar.length, Math.min(baz, 100))
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr(1, length)
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr(1, "abc".length)
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr("1", 2)
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr(0, -1)
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr(0, "foo".length)
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr(1, length)
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substr(start)
    ·     ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr(1)
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substr(start, length)
    ·     ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substr(1, 2)
    ·       ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substr(1, 2, 3)
    ·     ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:10]
  1 │ "Sample".substr(0, "Sample".lastIndexOf("/"))
    ·          ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substring()
    ·     ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substring()
    ·       ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substring(1)
    ·       ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substring(1, 2)
    ·       ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substring(2, 1)
    ·       ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substring(-1, -5)
    ·       ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substring(-1, 2)
    ·       ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substring(length)
    ·       ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:10]
  1 │ "foobar".substring("foo".length)
    ·          ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substring(0, length)
    ·       ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substring(length, 0)
    ·       ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substring(start)
    ·     ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substring(1)
    ·       ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substring(start, end)
    ·     ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:7]
  1 │ "foo".substring(1, 3)
    ·       ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substring(1, 2, 3)
    ·     ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substr(0, ...bar)
    ·     ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substr(...bar)
    ·     ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substr(0, (100, 1))
    ·     ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substr(0, 1, extraArgument)
    ·     ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substr()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substr((0, bar.length), (0, baz.length))
    ·     ──────
    ╰────
+  help: Replace `substr` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substring((10, 1), 0)
    ·     ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substring(0, (10, 1))
    ·     ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substring(0, await 1)
    ·     ─────────
    ╰────
+  help: Replace `substring` with `slice`.
 
   ⚠ eslint-plugin-unicorn(prefer-string-slice): Prefer String#slice() over String#substring()
    ╭─[prefer_string_slice.tsx:1:5]
  1 │ foo.substring((10, bar))
    ·     ─────────
    ╰────
+  help: Replace `substring` with `slice`.