diff --git a/.github/workflows/js-tests.yml b/.github/workflows/js-tests.yml
index 179c0f16a6f..4facc8baef8 100644
--- a/.github/workflows/js-tests.yml
+++ b/.github/workflows/js-tests.yml
@@ -40,6 +40,6 @@ jobs:
       - name: Build JS (Production Version, with tests)
         run: npm run build:test
       - name: Bundlesize
-        run: npm run test:bundlesize
-        env:
-          BUNDLESIZE_GITHUB_TOKEN: ${{ secrets.BUNDLESIZE_GITHUB_TOKEN }}
+        uses: preactjs/compressed-size-action@v2
+        with:
+          repo-token: "${{ secrets.GITHUB_TOKEN }}"
diff --git a/package-lock.json b/package-lock.json
index 7e9d7bfa566..d846fab5c28 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11527,15 +11527,6 @@
       "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
       "integrity": "sha512-ReZxvNHIOv88FlT7rxcXIIC0fPt4KZqZbOlivyWtXLt8ESx84zd3kMC6iK5jVeS2qt+g7ftS7ye4fi06X5rtRQ=="
     },
-    "axios": {
-      "version": "0.19.2",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.2.tgz",
-      "integrity": "sha512-fjgm5MvRHLhx+osE2xoekY70AhARk3a6hkN+3Io1jc00jtquGvxYlKlsFUhmUET0V5te6CcZI7lcv2Ym61mjHA==",
-      "dev": true,
-      "requires": {
-        "follow-redirects": "1.5.10"
-      }
-    },
     "axobject-query": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/axobject-query/-/axobject-query-2.1.2.tgz",
@@ -12794,16 +12785,6 @@
       "resolved": "https://registry.npmjs.org/brorand/-/brorand-1.1.0.tgz",
       "integrity": "sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8="
     },
-    "brotli-size": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/brotli-size/-/brotli-size-0.1.0.tgz",
-      "integrity": "sha512-5ny7BNvpe2TSmdafF1T9dnFYp3AIrJ8qJt29K0DQJzORlK38LBim/CmlY26JtreV6SWmXza7Oa+9m61SzvxR0Q==",
-      "dev": true,
-      "requires": {
-        "duplexer": "^0.1.1",
-        "iltorb": "^2.4.3"
-      }
-    },
     "browser-process-hrtime": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/browser-process-hrtime/-/browser-process-hrtime-1.0.0.tgz",
@@ -12949,88 +12930,6 @@
       "resolved": "https://registry.npmjs.org/builtin-status-codes/-/builtin-status-codes-3.0.0.tgz",
       "integrity": "sha1-hZgoeOIbmOHGZCXgPQF0eI9Wnug="
     },
-    "bundlesize": {
-      "version": "0.18.0",
-      "resolved": "https://registry.npmjs.org/bundlesize/-/bundlesize-0.18.0.tgz",
-      "integrity": "sha512-GZURr25umfYxZYZUyOlOtJRbYjAn0VfbjbnS0NBcOiF8VcjmhoEhmx8Gw4va8HeQb8j7Ra0ZltY/IeHgSHFXFw==",
-      "dev": true,
-      "requires": {
-        "axios": "^0.19.0",
-        "brotli-size": "0.1.0",
-        "bytes": "^3.1.0",
-        "ci-env": "^1.4.0",
-        "commander": "^2.20.0",
-        "cosmiconfig": "^5.2.1",
-        "github-build": "^1.2.0",
-        "glob": "^7.1.4",
-        "gzip-size": "^4.0.0",
-        "prettycli": "^1.4.3"
-      },
-      "dependencies": {
-        "commander": {
-          "version": "2.20.3",
-          "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.3.tgz",
-          "integrity": "sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==",
-          "dev": true
-        },
-        "cosmiconfig": {
-          "version": "5.2.1",
-          "resolved": "https://registry.npmjs.org/cosmiconfig/-/cosmiconfig-5.2.1.tgz",
-          "integrity": "sha512-H65gsXo1SKjf8zmrJ67eJk8aIRKV5ff2D4uKZIBZShbhGSpEmsQOPW/SKMKYhSTrqR7ufy6RP69rPogdaPh/kA==",
-          "dev": true,
-          "requires": {
-            "import-fresh": "^2.0.0",
-            "is-directory": "^0.3.1",
-            "js-yaml": "^3.13.1",
-            "parse-json": "^4.0.0"
-          }
-        },
-        "glob": {
-          "version": "7.1.6",
-          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.6.tgz",
-          "integrity": "sha512-LwaxwyZ72Lk7vZINtNNrywX0ZuLyStrdDtabefZKAY5ZGJhVtgdznluResxNmPitE0SAO+O26sWTHeKSI2wMBA==",
-          "dev": true,
-          "requires": {
-            "fs.realpath": "^1.0.0",
-            "inflight": "^1.0.4",
-            "inherits": "2",
-            "minimatch": "^3.0.4",
-            "once": "^1.3.0",
-            "path-is-absolute": "^1.0.0"
-          }
-        },
-        "gzip-size": {
-          "version": "4.1.0",
-          "resolved": "https://registry.npmjs.org/gzip-size/-/gzip-size-4.1.0.tgz",
-          "integrity": "sha1-iuCWJX6r59acRb4rZ8RIEk/7UXw=",
-          "dev": true,
-          "requires": {
-            "duplexer": "^0.1.1",
-            "pify": "^3.0.0"
-          }
-        },
-        "js-yaml": {
-          "version": "3.14.0",
-          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.0.tgz",
-          "integrity": "sha512-/4IbIeHcD9VMHFqDR/gQ7EdZdLimOvW2DdcxFjdyyZ9NsbS+ccrXqVWDtab/lRl5AlUqmpBx8EhPaWR+OtY17A==",
-          "dev": true,
-          "requires": {
-            "argparse": "^1.0.7",
-            "esprima": "^4.0.0"
-          }
-        },
-        "parse-json": {
-          "version": "4.0.0",
-          "resolved": "https://registry.npmjs.org/parse-json/-/parse-json-4.0.0.tgz",
-          "integrity": "sha1-vjX1Qlvh9/bHRxhPmKeIy5lHfuA=",
-          "dev": true,
-          "requires": {
-            "error-ex": "^1.3.1",
-            "json-parse-better-errors": "^1.0.1"
-          }
-        }
-      }
-    },
     "bytes": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
@@ -13383,12 +13282,6 @@
         }
       }
     },
-    "ci-env": {
-      "version": "1.16.0",
-      "resolved": "https://registry.npmjs.org/ci-env/-/ci-env-1.16.0.tgz",
-      "integrity": "sha512-ucF9caQEX5wQlY449KZBIJPx91+kRg9tJ3tWSc4+KzrvC5KNiPm/3g1noP8VhdI3046+Vw3jLmKAD0fjCRJTmw==",
-      "dev": true
-    },
     "ci-info": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/ci-info/-/ci-info-2.0.0.tgz",
@@ -14949,12 +14842,6 @@
       "resolved": "https://registry.npmjs.org/detect-file/-/detect-file-1.0.0.tgz",
       "integrity": "sha1-8NZtA2cqglyxtzvbP+YjEMjlUrc="
     },
-    "detect-libc": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/detect-libc/-/detect-libc-1.0.3.tgz",
-      "integrity": "sha1-+hN8S9aY7fVc1c0CrFWfkaTEups=",
-      "dev": true
-    },
     "detect-newline": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/detect-newline/-/detect-newline-3.1.0.tgz",
@@ -17633,12 +17520,6 @@
         }
       }
     },
-    "expand-template": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/expand-template/-/expand-template-2.0.3.tgz",
-      "integrity": "sha512-XYfuKMvj4O35f/pOXLObndIRvyQ+/+6AhODh+OKWj9S9498pHHn/IMszH+gt0fBCRWMNfk1ZSp5x3AifmnI2vg==",
-      "dev": true
-    },
     "expand-tilde": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/expand-tilde/-/expand-tilde-2.0.2.tgz",
@@ -18592,15 +18473,6 @@
         }
       }
     },
-    "follow-redirects": {
-      "version": "1.5.10",
-      "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.5.10.tgz",
-      "integrity": "sha512-0V5l4Cizzvqt5D44aTXbFZz+FtyXV1vrDN6qrelxtfYQKW0KO0W2T/hkE8xvGa/540LkZlkaUjO4ailYTFtHVQ==",
-      "dev": true,
-      "requires": {
-        "debug": "=3.1.0"
-      }
-    },
     "for-in": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/for-in/-/for-in-1.0.2.tgz",
@@ -18940,39 +18812,6 @@
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       "dev": true
     },
-    "github-build": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/github-build/-/github-build-1.2.1.tgz",
-      "integrity": "sha512-VAT4NFU8hm9Ks5yNKuuczD2zMbmouAKHtxtwvmCj34Q2DpZsjgp3LLjtrKlm/YvGSzSNGmj22ccJQQei+f/vIw==",
-      "dev": true,
-      "requires": {
-        "axios": "0.19.0"
-      },
-      "dependencies": {
-        "axios": {
-          "version": "0.19.0",
-          "resolved": "https://registry.npmjs.org/axios/-/axios-0.19.0.tgz",
-          "integrity": "sha512-1uvKqKQta3KBxIz14F2v06AEHZ/dIoeKfbTRkK1E5oqjDnuEerLmYTgJB5AiQZHJcljpg1TuRzdjDR06qNk0DQ==",
-          "dev": true,
-          "requires": {
-            "follow-redirects": "1.5.10",
-            "is-buffer": "^2.0.2"
-          }
-        },
-        "is-buffer": {
-          "version": "2.0.4",
-          "resolved": "https://registry.npmjs.org/is-buffer/-/is-buffer-2.0.4.tgz",
-          "integrity": "sha512-Kq1rokWXOPXWuaMAqZiJW4XxsmD9zGx9q4aePabbn3qCRGedtH7Cm+zV8WETitMfu1wdh+Rvd6w5egwSngUX2A==",
-          "dev": true
-        }
-      }
-    },
-    "github-from-package": {
-      "version": "0.0.0",
-      "resolved": "https://registry.npmjs.org/github-from-package/-/github-from-package-0.0.0.tgz",
-      "integrity": "sha1-l/tdlr/eiXMxPyDoKI75oWf6ZM4=",
-      "dev": true
-    },
     "glob": {
       "version": "7.1.2",
       "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
@@ -19883,27 +19722,6 @@
       "resolved": "https://registry.npmjs.org/ignore-emit-webpack-plugin/-/ignore-emit-webpack-plugin-2.0.3.tgz",
       "integrity": "sha512-ahTYD5KZ3DiZG9goS8NCxBaPEfXsPLH5JeWKmFTThD8lsPen6R4tLnWcN/mrksK5cDqyxOzmRL12feJQZjffuA=="
     },
-    "iltorb": {
-      "version": "2.4.5",
-      "resolved": "https://registry.npmjs.org/iltorb/-/iltorb-2.4.5.tgz",
-      "integrity": "sha512-EMCMl3LnnNSZJS5QrxyZmMTaAC4+TJkM5woD+xbpm9RB+mFYCr7C05GFE3TEGCsVQSVHmjX+3sf5AiwsylNInQ==",
-      "dev": true,
-      "requires": {
-        "detect-libc": "^1.0.3",
-        "nan": "^2.14.0",
-        "npmlog": "^4.1.2",
-        "prebuild-install": "^5.3.3",
-        "which-pm-runs": "^1.0.0"
-      },
-      "dependencies": {
-        "nan": {
-          "version": "2.14.1",
-          "resolved": "https://registry.npmjs.org/nan/-/nan-2.14.1.tgz",
-          "integrity": "sha512-isWHgVjnFjh2x2yuJ/tj3JbwoHu3UC2dX5G/88Cm24yB6YopVgxvBObDY7n5xW6ExmFhJpSEQqFPvq9zaXc8Jw==",
-          "dev": true
-        }
-      }
-    },
     "imagesloaded": {
       "version": "4.1.4",
       "resolved": "https://registry.npmjs.org/imagesloaded/-/imagesloaded-4.1.4.tgz",
@@ -24792,12 +24610,6 @@
         "to-regex": "^3.0.1"
       }
     },
-    "napi-build-utils": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/napi-build-utils/-/napi-build-utils-1.0.2.tgz",
-      "integrity": "sha512-ONmRUqK7zj7DWX0D9ADe03wbwOBZxNAfF20PlGfCWQcD3+/MakShIHrMqx9YwPTfxDdF1zLeL+RGZiR9kGMLdg==",
-      "dev": true
-    },
     "natives": {
       "version": "1.1.6",
       "resolved": "https://registry.npmjs.org/natives/-/natives-1.1.6.tgz",
@@ -24865,15 +24677,6 @@
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       }
     },
-    "node-abi": {
-      "version": "2.18.0",
-      "resolved": "https://registry.npmjs.org/node-abi/-/node-abi-2.18.0.tgz",
-      "integrity": "sha512-yi05ZoiuNNEbyT/xXfSySZE+yVnQW6fxPZuFbLyS1s6b5Kw3HzV2PHOM4XR+nsjzkHxByK+2Wg+yCQbe35l8dw==",
-      "dev": true,
-      "requires": {
-        "semver": "^5.4.1"
-      }
-    },
     "node-dir": {
       "version": "0.1.17",
       "resolved": "https://registry.npmjs.org/node-dir/-/node-dir-0.1.17.tgz",
@@ -25137,12 +24940,6 @@
         }
       }
     },
-    "noop-logger": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/noop-logger/-/noop-logger-0.1.1.tgz",
-      "integrity": "sha1-lKKxYzxPExdVMAfYlm/Q6EG2pMI=",
-      "dev": true
-    },
     "nopt": {
       "version": "3.0.6",
       "resolved": "https://registry.npmjs.org/nopt/-/nopt-3.0.6.tgz",
@@ -28192,37 +27989,6 @@
       "resolved": "https://registry.npmjs.org/preact/-/preact-8.5.3.tgz",
       "integrity": "sha512-O3kKP+1YdgqHOFsZF2a9JVdtqD+RPzCQc3rP+Ualf7V6rmRDchZ9MJbiGTT7LuyqFKZqlHSOyO/oMFmI2lVTsw=="
     },
-    "prebuild-install": {
-      "version": "5.3.5",
-      "resolved": "https://registry.npmjs.org/prebuild-install/-/prebuild-install-5.3.5.tgz",
-      "integrity": "sha512-YmMO7dph9CYKi5IR/BzjOJlRzpxGGVo1EsLSUZ0mt/Mq0HWZIHOKHHcHdT69yG54C9m6i45GpItwRHpk0Py7Uw==",
-      "dev": true,
-      "requires": {
-        "detect-libc": "^1.0.3",
-        "expand-template": "^2.0.3",
-        "github-from-package": "0.0.0",
-        "minimist": "^1.2.3",
-        "mkdirp": "^0.5.1",
-        "napi-build-utils": "^1.0.1",
-        "node-abi": "^2.7.0",
-        "noop-logger": "^0.1.1",
-        "npmlog": "^4.0.1",
-        "pump": "^3.0.0",
-        "rc": "^1.2.7",
-        "simple-get": "^3.0.3",
-        "tar-fs": "^2.0.0",
-        "tunnel-agent": "^0.6.0",
-        "which-pm-runs": "^1.0.0"
-      },
-      "dependencies": {
-        "minimist": {
-          "version": "1.2.5",
-          "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
-          "integrity": "sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==",
-          "dev": true
-        }
-      }
-    },
     "prelude-ls": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.1.2.tgz",
@@ -28308,43 +28074,6 @@
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       "dev": true
     },
-    "prettycli": {
-      "version": "1.4.3",
-      "resolved": "https://registry.npmjs.org/prettycli/-/prettycli-1.4.3.tgz",
-      "integrity": "sha512-KLiwAXXfSWXZqGmZlnKPuGMTFp+0QbcySplL1ft9gfteT/BNsG64Xo8u2Qr9r+qnsIZWBQ66Zs8tg+8s2fmzvw==",
-      "dev": true,
-      "requires": {
-        "chalk": "2.1.0"
-      },
-      "dependencies": {
-        "chalk": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.1.0.tgz",
-          "integrity": "sha512-LUHGS/dge4ujbXMJrnihYMcL4AoOweGnw9Tp3kQuqy1Kx5c1qKjqvMJZ6nVJPMWJtKCTN72ZogH3oeSO9g9rXQ==",
-          "dev": true,
-          "requires": {
-            "ansi-styles": "^3.1.0",
-            "escape-string-regexp": "^1.0.5",
-            "supports-color": "^4.0.0"
-          }
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-        "has-flag": {
-          "version": "2.0.0",
-          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-2.0.0.tgz",
-          "integrity": "sha1-6CB68cx7MNRGzHC3NLXovhj4jVE=",
-          "dev": true
-        },
-        "supports-color": {
-          "version": "4.5.0",
-          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-4.5.0.tgz",
-          "integrity": "sha1-vnoN5ITexcXN34s9WRJQRJEvY1s=",
-          "dev": true,
-          "requires": {
-            "has-flag": "^2.0.0"
-          }
-        }
-      }
-    },
     "prismjs": {
       "version": "1.20.0",
       "resolved": "https://registry.npmjs.org/prismjs/-/prismjs-1.20.0.tgz",
@@ -31131,40 +30860,6 @@
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       "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0="
     },
-    "simple-concat": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/simple-concat/-/simple-concat-1.0.0.tgz",
-      "integrity": "sha1-c0TLuLbib7J9ZrL8hvn21Zl1IcY=",
-      "dev": true
-    },
-    "simple-get": {
-      "version": "3.1.0",
-      "resolved": "https://registry.npmjs.org/simple-get/-/simple-get-3.1.0.tgz",
-      "integrity": "sha512-bCR6cP+aTdScaQCnQKbPKtJOKDp/hj9EDLJo3Nw4y1QksqaovlW/bnptB6/c1e+qmNIDHRK+oXFDdEqBT8WzUA==",
-      "dev": true,
-      "requires": {
-        "decompress-response": "^4.2.0",
-        "once": "^1.3.1",
-        "simple-concat": "^1.0.0"
-      },
-      "dependencies": {
-        "decompress-response": {
-          "version": "4.2.1",
-          "resolved": "https://registry.npmjs.org/decompress-response/-/decompress-response-4.2.1.tgz",
-          "integrity": "sha512-jOSne2qbyE+/r8G1VU+G/82LBs2Fs4LAsTiLSHOCOMZQl2OKZ6i8i4IyHemTe+/yIXOtTcRQMzPcgyhoFlqPkw==",
-          "dev": true,
-          "requires": {
-            "mimic-response": "^2.0.0"
-          }
-        },
-        "mimic-response": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/mimic-response/-/mimic-response-2.1.0.tgz",
-          "integrity": "sha512-wXqjST+SLt7R009ySCglWBCFpjUygmCIfD790/kVbiGmUgfYGuB14PiTd5DwVxSV4NcYHjzMkoj5LjQZwTQLEA==",
-          "dev": true
-        }
-      }
-    },
     "simple-swizzle": {
       "version": "0.2.2",
       "resolved": "https://registry.npmjs.org/simple-swizzle/-/simple-swizzle-0.2.2.tgz",
@@ -36818,12 +36513,6 @@
         "isexe": "^2.0.0"
       }
     },
-    "which-pm-runs": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/which-pm-runs/-/which-pm-runs-1.0.0.tgz",
-      "integrity": "sha1-Zws6+8VS4LVd9rd4DKdGFfI60cs=",
-      "dev": true
-    },
     "wicg-inert": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/wicg-inert/-/wicg-inert-3.0.3.tgz",
diff --git a/package.json b/package.json
index 752f6b40efb..769da7ce964 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,6 @@
     "pretest": "npm run build:production -- --display=none",
     "pretest:visualtest": "npm run build:storybook",
     "test": "npm run test:js:watch",
-    "test:bundlesize": "bundlesize",
     "test:visualtest": "npm run backstopjs -- --storybook-host=./dist/",
     "test:visualapprove": "backstop approve --config=tests/backstop/config.js",
     "test:analyze": "npm run build:production -- --env.analyze=true --json --progress --profile > /tmp/stats.json && cp ./dist/assets/js/*.js /tmp && webpack-bundle-analyzer /tmp/stats.json",
@@ -49,16 +48,6 @@
   "browserslist": [
     "extends @wordpress/browserslist-config"
   ],
-  "bundlesize": [
-    {
-      "path": "./dist/*.js",
-      "maxSize": "270 kB"
-    },
-    {
-      "path": "./dist/assets/js/googlesitekit-*.js",
-      "maxSize": "280 kB"
-    }
-  ],
   "repository": {
     "type": "git",
     "url": "git@github.com:google/site-kit-wp.git"
@@ -177,7 +166,6 @@
     "babel-loader": "^8.1.0",
     "babel-plugin-lodash": "^3.3.4",
     "backstopjs": "~4.4.0",
-    "bundlesize": "^0.18.0",
     "circular-dependency-plugin": "^5.2.0",
     "create-file-webpack": "^1.0.2",
     "css-loader": "^3.6.0",