diff --git a/Dockerfile b/Dockerfile
index cbf38718..8996014e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -12,6 +12,9 @@ ARG asciidoctor_revealjs_version=4.1.0
 ARG kramdown_asciidoc_version=2.0.0
 ARG asciidoctor_bibtex_version=0.8.0
 ARG asciidoctor_kroki_version=0.5.0
+ARG nodejs_version=16.14.0-r0
+ARG asciidoctor_web_pdf_version=1.0.0-alpha.14
+ARG asciidoctor_kroki_npm_version=0.15.4
 
 ENV ASCIIDOCTOR_VERSION=${asciidoctor_version} \
   ASCIIDOCTOR_CONFLUENCE_VERSION=${asciidoctor_confluence_version} \
@@ -23,7 +26,10 @@ ENV ASCIIDOCTOR_VERSION=${asciidoctor_version} \
   ASCIIDOCTOR_REVEALJS_VERSION=${asciidoctor_revealjs_version} \
   KRAMDOWN_ASCIIDOC_VERSION=${kramdown_asciidoc_version} \
   ASCIIDOCTOR_BIBTEX_VERSION=${asciidoctor_bibtex_version} \
-  ASCIIDOCTOR_KROKI_VERSION=${asciidoctor_kroki_version}
+  ASCIIDOCTOR_KROKI_VERSION=${asciidoctor_kroki_version} \
+  NODEJS_VERSION=${nodejs_version} \
+  ASCIIDOCTOR_WEB_PDF_VERSION=${asciidoctor_web_pdf_version} \
+  ASCIIDOCTOR_KROKI_NPM_VERSION=${asciidoctor_kroki_npm_version}
 
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 # Minimal image with asciidoctor
@@ -100,7 +106,8 @@ RUN apk add --no-cache \
     tzdata \
     unzip \
     which \
-    font-noto-cjk
+    font-noto-cjk \
+    nodejs
 
 # Installing Ruby Gems for additional functionality
 RUN apk add --no-cache --virtual .rubymakedepends \
@@ -142,6 +149,11 @@ RUN apk add --no-cache --virtual .pythonmakedepends \
     seqdiag \
   && apk del -r --no-cache .pythonmakedepends
 
+# Installing Nodejs dependencies for additional functionality
+RUN npm install --global @asciidoctor/core \
+    asciidoctor-pdf@${ASCIIDOCTOR_WEB_PDF_VERSION} \
+    asciidoctor-kroki@${ASCIIDOCTOR_KROKI_NPM_VERSION}
+
 COPY --from=build-haskell root/.cabal/bin/erd     /bin/
 
 WORKDIR /documents
diff --git a/README.adoc b/README.adoc
index f1cc4094..f52dfab8 100644
--- a/README.adoc
+++ b/README.adoc
@@ -10,6 +10,15 @@
 :KRAMDOWN_ASCIIDOC_VERSION: 2.0.0
 :ASCIIDOCTOR_BIBTEX_VERSION: 0.8.0
 :ASCIIDOCTOR_KROKI_VERSION: 0.5.0
+:NODEJS_VERSION: 16.14.0
+:ASCIIDOCTOR_WEB_PDF_VERSION: 1.0.0-alpha.14
+ifdef::env-github[]
+:tip-caption: :bulb:
+:note-caption: :information_source:
+:important-caption: :heavy_exclamation_mark:
+:caution-caption: :fire:
+:warning-caption: :warning:
+endif::[]
 = Asciidoctor Docker Container
 :source-highlighter: coderay
 
@@ -34,6 +43,7 @@ This Docker image provides:
 * https://github.com/asciidoctor/asciidoctor-confluence[Asciidoctor Confluence] {ASCIIDOCTOR_CONFLUENCE_VERSION}
 * https://github.com/asciidoctor/asciidoctor-bibtex[Asciidoctor Bibtex] {ASCIIDOCTOR_BIBTEX_VERSION}
 * https://github.com/Mogztter/asciidoctor-kroki[Asciidoctor Kroki] {ASCIIDOCTOR_KROKI_VERSION}
+* https://github.com/Mogztter/asciidoctor-web-pdf[Asciidoctor Web PDF] {ASCIIDOCTOR_WEB_PDF_VERSION} -- This is an unofficial project.
 
 
 This image uses Alpine Linux {ALPINE_VERSION} as base image.
@@ -111,6 +121,19 @@ asciidoctor-revealjs -a revealjsdir=https://cdnjs.cloudflare.com/ajax/libs/revea
 docker run --rm -v $(pwd):/documents/ asciidoctor/docker-asciidoctor asciidoctor-pdf index.adoc
 ----
 
+* To convert files with Asciidoctor Web PDF:
++
+[source, bash]
+----
+# 1. generate a PDF document from basic example
+asciidoctor-web-pdf document.adoc
+# Generate the file `document.pdf`
+
+# 2. generate an PDF document with a diagram
+asciidoctor-web-pdf --require asciidoctor-kroki document-with-diagram.adoc
+# Generate the file `document-with-diagram.pdf`
+----
+
 == How to contribute / do it yourself?
 
 === Requirements
diff --git a/README.md b/README.md
index 4e12148e..69f2d82f 100644
--- a/README.md
+++ b/README.md
@@ -28,6 +28,8 @@ This Docker image provides:
 
 -   [Asciidoctor Kroki](https://github.com/Mogztter/asciidoctor-kroki) 0.5.0
 
+-   [Asciidoctor Web PDF](https://github.com/Mogztter/asciidoctor-web-pdf) 1.0.0-alpha.14  -- This is an unofficial project.
+
 This image uses Alpine Linux 3.13.5 as base image.
 
 ## How to use it
@@ -71,6 +73,17 @@ You can find several examples below.
 
         docker run --rm -v $(pwd):/documents/ asciidoctor/docker-asciidoctor asciidoctor-pdf index.adoc
 
+-   To convert files with Asciidoctor Web PDF:
+
+        # 1. generate a PDF document from basic example
+        asciidoctor-web-pdf document.adoc
+        # Generate the file `document.pdf`
+        
+        # 2. generate an PDF document with a diagram
+        asciidoctor-web-pdf --require asciidoctor-kroki document-with-diagram.adoc
+        # Generate the file `document-with-diagram.pdf`
+
+
 ## How to contribute / do it yourself?
 
 ### Requirements
diff --git a/tests/asciidoctor.bats b/tests/asciidoctor.bats
index aa01458a..61e58dfc 100644
--- a/tests/asciidoctor.bats
+++ b/tests/asciidoctor.bats
@@ -13,6 +13,8 @@ ASCIIDOCTOR_REVEALJS_VERSION=4.1.0
 KRAMDOWN_ASCIIDOC_VERSION=2.0.0
 ASCIIDOCTOR_BIBTEX_VERSION=0.8.0
 ASCIIDOCTOR_KROKI_VERSION=0.5.0
+NODEJS_VERSION=16.14.0
+ASCIIDOCTOR_WEB_PDF_VERSION=1.0.0-alpha.14
 DOCKER_IMAGE_NAME_TO_TEST="${IMAGE_NAME:-asciidoctor}"
 
 clean_generated_files() {
@@ -48,6 +50,17 @@ teardown() {
     | grep "${ASCIIDOCTOR_PDF_VERSION}"
 }
 
+@test "asciidoctor-web-pdf is installed and in version ${ASCIIDOCTOR_WEB_PDF_VERSION}" {
+  docker run -t --rm "${DOCKER_IMAGE_NAME_TO_TEST}" asciidoctor-web-pdf -v \
+    | grep "Asciidoctor Web PDF" | grep "${ASCIIDOCTOR_VERSION}" \
+    | grep "${ASCIIDOCTOR_WEB_PDF_VERSION}"
+}
+
+@test "Node.js is installed and in version ${NODEJS_VERSION}" {
+  docker run -t --rm "${DOCKER_IMAGE_NAME_TO_TEST}" node -v \
+    | grep "${NODEJS_VERSION}"
+}
+
 @test "asciidoctor-revealjs is callable without error" {
   docker run -t --rm "${DOCKER_IMAGE_NAME_TO_TEST}" asciidoctor-revealjs -v \
     | grep "${ASCIIDOCTOR_REVEALJS_VERSION}"
@@ -120,6 +133,13 @@ teardown() {
       /documents/fixtures/basic-example.adoc
 }
 
+@test "We can generate a PDF document from basic example(Asciidoctor Web PDF)" {
+  docker run -t --rm \
+    -v "${BATS_TEST_DIRNAME}":/documents/ \
+    "${DOCKER_IMAGE_NAME_TO_TEST}" \
+      asciidoctor-web-pdf -D /documents/tmp /documents/fixtures/basic-example.adoc
+}
+
 @test "We can generate an FB2 document from basic example without errors/warnings" {
 
   docker run -t --rm \
@@ -285,6 +305,14 @@ teardown() {
       /documents/fixtures/samples-syntax-highlight/*.adoc
 }
 
+@test "We can generate PDF documents with different syntax-colored codes(Asciidoctor Web PDF)" {
+  docker run -t --rm \
+    -v "${BATS_TEST_DIRNAME}":/documents/ \
+    "${DOCKER_IMAGE_NAME_TO_TEST}" \
+      asciidoctor-web-pdf -D /documents/tmp \
+      /documents/fixtures/samples-syntax-highlight/*.adoc
+}
+
 @test "We can convert a Markdown file to an AsciiDoc file" {
   docker run -t --rm \
     -v "${BATS_TEST_DIRNAME}":/documents/ \
diff --git a/updatecli/updatecli.d/asciidoctor-web-pdf.yml b/updatecli/updatecli.d/asciidoctor-web-pdf.yml
new file mode 100644
index 00000000..c9e258dc
--- /dev/null
+++ b/updatecli/updatecli.d/asciidoctor-web-pdf.yml
@@ -0,0 +1,90 @@
+---
+title: "Bump Asciidoctor-Web-PDF version"
+
+scms:
+  default:
+    kind: github
+    spec:
+      user: "{{ .github.user }}"
+      email: "{{ .github.email }}"
+      owner: "{{ requiredEnv .github.owner }}"
+      repository: "{{ requiredEnv .github.repository }}"
+      token: "{{ requiredEnv .github.token }}"
+      username: "{{ .github.username }}"
+      branch: "{{ .github.branch }}"
+
+sources:
+  latestVersion:
+    kind: githubRelease
+    name: "Get the latest Asciidoctor-Web-PDF version"
+    spec:
+      owner: "Mogztter"
+      repository: "asciidoctor-web-pdf"
+      token: "{{ requiredEnv .github.token }}"
+      username: "{{ .github.username }}"
+      versionFilter:
+        kind: latest
+    transformers:
+      - trimPrefix: "v"
+
+conditions:
+  testDockerfileArgVersion:
+    name: "Does the Dockerfile have an ARG instruction which key is asciidoctor_web_pdf_version?"
+    kind: dockerfile
+    spec:
+      file: Dockerfile
+      instruction:
+        keyword: "ARG"
+        matcher: "asciidoctor_web_pdf_version"
+  testVersionInReadme:
+    name: "Does the README.adoc have a variable asciidoctor_web_pdf_version"
+    kind: file
+    spec:
+      file: README.adoc
+      matchPattern: '(?m:^:ASCIIDOCTOR_WEB_PDF_VERSION:.*)'
+  testVersionInTestHarness:
+    name: "Does the test harness have variable ASCIIDOCTOR_WEB_PDF_VERSION"
+    kind: file
+    spec:
+      file: tests/asciidoctor.bats
+      matchPattern: '(?m:^ASCIIDOCTOR_WEB_PDF_VERSION=.*)'
+
+targets:
+  updateDockerfile:
+    name: "Update the value of ARG asciidoctor_web_pdf_version in the Dockerfile"
+    kind: dockerfile
+    spec:
+      file: Dockerfile
+      instruction:
+        keyword: "ARG"
+        matcher: "asciidoctor_web_pdf_version"
+    scmID: default
+  updateTestHarness:
+    name: "Update the key ASCIIDOCTOR_WEB_PDF_VERSION in the test harness"
+    kind: file
+    spec:
+      file: tests/asciidoctor.bats
+      matchPattern: '(?m:^ASCIIDOCTOR_WEB_PDF_VERSION=.*)'
+      content: 'ASCIIDOCTOR_WEB_PDF_VERSION={{ source `latestVersion` }}'
+    scmID: default
+  updateReadme:
+    name: "Update the key ASCIIDOCTOR_WEB_PDF_VERSION in the README.adoc file"
+    kind: file
+    spec:
+      file: README.adoc
+      matchPattern: '(?m:^:ASCIIDOCTOR_WEB_PDF_VERSION:.*)'
+      content: ':ASCIIDOCTOR_WEB_PDF_VERSION: {{ source `latestVersion` }}'
+    scmID: default
+
+pullrequests:
+  default:
+    kind: github
+    scmID: default
+    targets:
+      - updateDockerfile
+      - updateTestHarness
+      - updateReadme
+    spec:
+      labels:
+        - chore
+        - dependencies
diff --git a/updatecli/updatecli.d/nodejs.yml b/updatecli/updatecli.d/nodejs.yml
new file mode 100644
index 00000000..a48da513
--- /dev/null
+++ b/updatecli/updatecli.d/nodejs.yml
@@ -0,0 +1,92 @@
+---
+title: "Bump Node.js version"
+
+scms:
+  default:
+    kind: github
+    spec:
+      user: "{{ .github.user }}"
+      email: "{{ .github.email }}"
+      owner: "{{ requiredEnv .github.owner }}"
+      repository: "{{ requiredEnv .github.repository }}"
+      token: "{{ requiredEnv .github.token }}"
+      username: "{{ .github.username }}"
+      branch: "{{ .github.branch }}"
+
+sources:
+  latestVersion:
+    kind: githubRelease
+    name: "Get the latest Node.js version"
+    spec:
+      owner: "nodejs"
+      repository: "node"
+      token: "{{ requiredEnv .github.token }}"
+      username: "{{ .github.username }}"
+      versionFilter:
+        kind: semver
+        # As per https://nodejs.org/en/about/releases/, the LTS line for nodejs is v16.x.y. Semantic version fixes the major version and get the latest minor . patch
+        pattern: ~16
+    transformers:
+      - trimPrefix: "v"
+
+conditions:
+  testDockerfileArgVersion:
+    name: "Does the Dockerfile have an ARG instruction which key is nodejs_version?"
+    kind: dockerfile
+    spec:
+      file: Dockerfile
+      instruction:
+        keyword: "ARG"
+        matcher: "nodejs_version"
+  testVersionInReadme:
+    name: "Does the README.adoc have a variable NODEJS_VERSION"
+    kind: file
+    spec:
+      file: README.adoc
+      matchPattern: '(?m:^:NODEJS_VERSION:.*)'
+  testVersionInTestHarness:
+    name: "Does the test harness have variable NODEJS_VERSION"
+    kind: file
+    spec:
+      file: tests/asciidoctor.bats
+      matchPattern: '(?m:^NODEJS_VERSION=.*)'
+
+targets:
+  updateDockerfile:
+    name: "Update the value of ARG nodejs_version in the Dockerfile"
+    kind: dockerfile
+    spec:
+      file: Dockerfile
+      instruction:
+        keyword: "ARG"
+        matcher: "nodejs_version"
+    scmID: default
+  updateTestHarness:
+    name: "Update the key NODEJS_VERSION in the test harness"
+    kind: file
+    spec:
+      file: tests/asciidoctor.bats
+      matchPattern: '(?m:^NODEJS_VERSION=.*)'
+      content: 'NODEJS_VERSION={{ source `latestVersion` }}'
+    scmID: default
+  updateReadme:
+    name: "Update the key NODEJS_VERSION in the README.adoc file"
+    kind: file
+    spec:
+      file: README.adoc
+      matchPattern: '(?m:^:NODEJS_VERSION:.*)'
+      content: ':NODEJS_VERSION: {{ source `latestVersion` }}'
+    scmID: default
+
+pullrequests:
+  default:
+    kind: github
+    scmID: default
+    targets:
+      - updateDockerfile
+      - updateTestHarness
+      - updateReadme
+    spec:
+      labels:
+        - chore
+        - dependencies