diff --git a/data/home/content/consulting/index.md b/data/home/content/consulting/index.md
index 5baca2b..3ffef2c 100644
--- a/data/home/content/consulting/index.md
+++ b/data/home/content/consulting/index.md
@@ -1,6 +1,7 @@
 ---
 type: page
 title: Consulting
+transformation: snark.replaceLinks
 language: en
 ---
 
@@ -20,7 +21,7 @@ Our research, which primarily includes open source projects, has already been ap
             <img src="images/pic03.jpg" alt="" />
         </span>
         <header class="major">
-            <h3><a href="consulting/research"  class="link">Research</a></h3>
+            <h3><a href="${homeRef}/consulting/research"  class="link">Research</a></h3>
             <p>Analytics, prototyping and research for fundamental science and industry.</p>
         </header>
     </article>
@@ -29,7 +30,7 @@ Our research, which primarily includes open source projects, has already been ap
             <img src="images/pic04.jpg" alt="" />
         </span>
         <header class="major">
-            <h3><a href="consulting/expert"  class="link">Expert activity</a></h3>
+            <h3><a href="${homeRef}/consulting/expert"  class="link">Expert activity</a></h3>
             <p>Analysis and improvement of existing scientific software and projects.</p>
         </header>
     </article>
@@ -38,7 +39,7 @@ Our research, which primarily includes open source projects, has already been ap
             <img src="images/pic05.jpg" alt="" />
         </span>
         <header class="major">
-            <h3><a href="consulting/architecture"  class="link">Architecture</a></h3>
+            <h3><a href="${homeRef}/consulting/architecture"  class="link">Architecture</a></h3>
             <p>Design the architecture for scientific and technological applications.</p>
         </header>
     </article>
@@ -47,7 +48,7 @@ Our research, which primarily includes open source projects, has already been ap
             <img src="images/pic06.jpg" alt="" />
         </span>
         <header class="major">
-            <h3><a href="consulting/development"  class="link">Development</a></h3>
+            <h3><a href="${homeRef}/consulting/development"  class="link">Development</a></h3>
             <p>The development and support of open-source and in-house solutions( libraries, frameworks and end-user application).</p>
         </header>
     </article>
diff --git a/src/main/kotlin/space/kscience/snark/HtmlData.kt b/src/main/kotlin/space/kscience/snark/HtmlData.kt
index ad44fea..b64c3a1 100644
--- a/src/main/kotlin/space/kscience/snark/HtmlData.kt
+++ b/src/main/kotlin/space/kscience/snark/HtmlData.kt
@@ -6,19 +6,23 @@ import kotlinx.html.FlowContent
 import kotlinx.html.TagConsumer
 import space.kscience.dataforge.data.Data
 import space.kscience.dataforge.data.await
-import space.kscience.dataforge.meta.Meta
 import space.kscience.dataforge.meta.get
 import space.kscience.dataforge.meta.int
 import space.kscience.dataforge.meta.string
 
 
 //TODO replace by VisionForge type
-typealias HtmlFragment = context(PageBuilder, TagConsumer<*>) () -> Unit
+//typealias HtmlFragment = context(PageBuilder, TagConsumer<*>) () -> Unit
+
+fun interface HtmlFragment {
+    fun TagConsumer<*>.renderFragment(page: PageBuilder)
+    //TODO move pageBuilder to a context receiver after KT-52967 is fixed
+}
 
 typealias HtmlData = Data<HtmlFragment>
 
-fun HtmlData(meta: Meta, content: context(PageBuilder, TagConsumer<*>) () -> Unit): HtmlData =
-    Data(content, meta)
+//fun HtmlData(meta: Meta, content: context(PageBuilder) TagConsumer<*>.() -> Unit): HtmlData =
+//    Data(HtmlFragment(content), meta)
 
 internal val HtmlData.id: String get() = meta["id"]?.string ?: "block[${hashCode()}]"
 internal val HtmlData.language: String? get() = meta["language"].string?.lowercase()
@@ -26,5 +30,5 @@ internal val HtmlData.language: String? get() = meta["language"].string?.lowerca
 internal val HtmlData.order: Int? get() = meta["order"]?.int
 
 context(PageBuilder) fun FlowContent.htmlData(data: HtmlData) = runBlocking(Dispatchers.IO) {
-    data.await().invoke(this@PageBuilder, consumer)
+    with(data.await()) { consumer.renderFragment(this@PageBuilder) }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/space/kscience/snark/KtorSiteBuilder.kt b/src/main/kotlin/space/kscience/snark/KtorSiteBuilder.kt
index 7a6c766..ad575f1 100644
--- a/src/main/kotlin/space/kscience/snark/KtorSiteBuilder.kt
+++ b/src/main/kotlin/space/kscience/snark/KtorSiteBuilder.kt
@@ -14,7 +14,6 @@ import io.ktor.server.routing.createRouteFromPath
 import io.ktor.server.routing.get
 import io.ktor.server.routing.routing
 import kotlinx.html.HTML
-import space.kscience.dataforge.context.Context
 import space.kscience.dataforge.data.DataTree
 import space.kscience.dataforge.meta.Meta
 import space.kscience.dataforge.meta.withDefault
@@ -57,7 +56,7 @@ internal class KtorSiteBuilder(
         val pageBaseUrl: String,
         override val meta: Meta = this@KtorSiteBuilder.meta,
     ) : PageBuilder {
-        override val context: Context get() = this@KtorSiteBuilder.context
+        override val snark: SnarkPlugin get() = this@KtorSiteBuilder.snark
         override val data: DataTree<*> get() = this@KtorSiteBuilder.data
 
         override fun resolveRef(ref: String): String = resolveRef(pageBaseUrl, ref)
diff --git a/src/main/kotlin/space/kscience/snark/PageBuilder.kt b/src/main/kotlin/space/kscience/snark/PageBuilder.kt
index 7acada4..d675f9e 100644
--- a/src/main/kotlin/space/kscience/snark/PageBuilder.kt
+++ b/src/main/kotlin/space/kscience/snark/PageBuilder.kt
@@ -1,5 +1,6 @@
 package space.kscience.snark
 
+import space.kscience.dataforge.context.Context
 import space.kscience.dataforge.context.ContextAware
 import space.kscience.dataforge.data.*
 import space.kscience.dataforge.meta.Meta
@@ -16,6 +17,11 @@ internal fun Name.toWebPath() = tokens.joinToString(separator = "/"){
 }
 
 interface PageBuilder : ContextAware {
+
+    val snark: SnarkPlugin
+
+    override val context: Context get() = snark.context
+
     val data: DataTree<*>
 
     val meta: Meta
diff --git a/src/main/kotlin/space/kscience/snark/SiteLayout.kt b/src/main/kotlin/space/kscience/snark/SiteLayout.kt
index f86469d..a964c71 100644
--- a/src/main/kotlin/space/kscience/snark/SiteLayout.kt
+++ b/src/main/kotlin/space/kscience/snark/SiteLayout.kt
@@ -10,6 +10,7 @@ import space.kscience.dataforge.meta.Meta
 import space.kscience.dataforge.meta.get
 import space.kscience.dataforge.meta.getIndexed
 import space.kscience.dataforge.meta.string
+import space.kscience.dataforge.misc.Type
 import space.kscience.dataforge.names.Name
 import space.kscience.dataforge.names.NameToken
 import space.kscience.dataforge.names.asName
@@ -109,11 +110,14 @@ fun SiteBuilder.pages(
 }
 
 
+
+@Type(SiteLayout.TYPE)
 fun interface SiteLayout {
 
     context(SiteBuilder) fun render(item: DataTreeItem<*>)
 
     companion object {
+        const val TYPE = "snark.layout"
         const val LAYOUT_KEY = "layout"
         const val ASSETS_KEY = "assets"
         val INDEX_PAGE_TOKEN = NameToken("index")
@@ -134,6 +138,7 @@ fun interface SiteLayout {
     }
 }
 
+
 object DefaultSiteLayout : SiteLayout {
     context(SiteBuilder) override fun render(item: DataTreeItem<*>) {
         pages(item)
diff --git a/src/main/kotlin/space/kscience/snark/SnarkPlugin.kt b/src/main/kotlin/space/kscience/snark/SnarkPlugin.kt
index 41df20d..42d8f57 100644
--- a/src/main/kotlin/space/kscience/snark/SnarkPlugin.kt
+++ b/src/main/kotlin/space/kscience/snark/SnarkPlugin.kt
@@ -18,6 +18,7 @@ import space.kscience.dataforge.misc.DFExperimental
 import space.kscience.dataforge.misc.Type
 import space.kscience.dataforge.names.Name
 import space.kscience.dataforge.names.asName
+import space.kscience.dataforge.names.parseAsName
 import space.kscience.dataforge.workspace.FileData
 import space.kscience.dataforge.workspace.readDataDirectory
 import java.nio.file.Path
@@ -36,12 +37,12 @@ interface SnarkParser<out R> {
 
     val priority: Int get() = DEFAULT_PRIORITY
 
-    fun parse(snark: SnarkPlugin, meta: Meta, bytes: ByteArray): R
+    fun parse(context: Context, meta: Meta, bytes: ByteArray): R
 
-    fun reader(snark: SnarkPlugin, meta: Meta) = object : IOReader<R> {
+    fun reader(context: Context, meta: Meta) = object : IOReader<R> {
         override val type: KType get() = this@SnarkParser.type
 
-        override fun readObject(input: Input): R = parse(snark, meta, input.readBytes())
+        override fun readObject(input: Input): R = parse(context, meta, input.readBytes())
     }
 
     companion object {
@@ -56,7 +57,7 @@ internal class SnarkParserWrapper<R : Any>(
     override val type: KType,
     override val fileExtensions: Set<String>,
 ) : SnarkParser<R> {
-    override fun parse(snark: SnarkPlugin, meta: Meta, bytes: ByteArray): R = bytes.asBinary().readWith(reader)
+    override fun parse(context: Context, meta: Meta, bytes: ByteArray): R = bytes.asBinary().readWith(reader)
 }
 
 /**
@@ -79,6 +80,14 @@ class SnarkPlugin : AbstractPlugin() {
         context.gather(SnarkParser.TYPE, true)
     }
 
+    private val layouts: Map<Name, SiteLayout> by lazy {
+        context.gather(SiteLayout.TYPE, true)
+    }
+
+    private val textTransformations: Map<Name, TextTransformation> by lazy {
+        context.gather(TextTransformation.TYPE, true)
+    }
+
     fun readDirectory(path: Path): DataTree<Any> = io.readDataDirectory(path) { dataPath, meta ->
         val fileExtension = meta[FileData.META_FILE_EXTENSION_KEY].string ?: dataPath.extension
         val parser: SnarkParser<Any> = parsers.values.filter { parser ->
@@ -90,11 +99,20 @@ class SnarkPlugin : AbstractPlugin() {
             byteArraySnarkParser
         }
 
-        parser.reader(this, meta)
+        parser.reader(context, meta)
     }
 
-    fun layout(meta: Meta): SiteLayout = when (meta[SiteLayout.LAYOUT_KEY]) {
-        else -> DefaultSiteLayout
+    internal fun layout(layoutMeta: Meta): SiteLayout {
+        val layoutName = layoutMeta.string
+            ?: layoutMeta["name"].string ?: error("Layout name not defined in $layoutMeta")
+        return layouts[layoutName.parseAsName()] ?: error("Layout with name $layoutName not found in $this")
+    }
+
+    internal fun textTransformation(transformationMeta: Meta): TextTransformation {
+        val transformationName = transformationMeta.string
+            ?: transformationMeta["name"].string ?: error("Transformation name not defined in $transformationMeta")
+        return textTransformations[transformationName.parseAsName()]
+            ?: error("Text transformation with name $transformationName not found in $this")
     }
 
     override fun content(target: String): Map<Name, Any> = when (target) {
@@ -107,6 +125,9 @@ class SnarkPlugin : AbstractPlugin() {
             "jpg".asName() to SnarkParser(ImageIOReader, "jpg", "jpeg"),
             "gif".asName() to SnarkParser(ImageIOReader, "gif"),
         )
+        TextTransformation.TYPE -> mapOf(
+            "replaceLinks".asName() to TextTransformation.replaceLinks
+        )
         else -> super.content(target)
     }
 
diff --git a/src/main/kotlin/space/kscience/snark/parsers.kt b/src/main/kotlin/space/kscience/snark/SnarkTextParser.kt
similarity index 75%
rename from src/main/kotlin/space/kscience/snark/parsers.kt
rename to src/main/kotlin/space/kscience/snark/SnarkTextParser.kt
index eb0658d..ee8a0f7 100644
--- a/src/main/kotlin/space/kscience/snark/parsers.kt
+++ b/src/main/kotlin/space/kscience/snark/SnarkTextParser.kt
@@ -7,8 +7,10 @@ import kotlinx.html.unsafe
 import org.intellij.markdown.flavours.commonmark.CommonMarkFlavourDescriptor
 import org.intellij.markdown.html.HtmlGenerator
 import org.intellij.markdown.parser.MarkdownParser
+import space.kscience.dataforge.context.Context
 import space.kscience.dataforge.io.IOReader
 import space.kscience.dataforge.meta.Meta
+import space.kscience.dataforge.meta.get
 import java.awt.image.BufferedImage
 import javax.imageio.ImageIO
 import kotlin.reflect.KType
@@ -17,8 +19,13 @@ import kotlin.reflect.typeOf
 abstract class SnarkTextParser<R> : SnarkParser<R> {
     abstract fun parseText(text: String, meta: Meta): R
 
-    override fun parse(snark: SnarkPlugin, meta: Meta, bytes: ByteArray): R =
+    override fun parse(context: Context, meta: Meta, bytes: ByteArray): R =
         parseText(bytes.decodeToString(), meta)
+
+    fun transformText(text: String, meta: Meta, page: PageBuilder): String =
+        meta[TextTransformation.TEXT_TRANSFORMATION_KEY]?.let {
+            with(page){ page.snark.textTransformation(it).transform(text)}
+        } ?: text
 }
 
 
@@ -26,9 +33,9 @@ internal object SnarkHtmlParser : SnarkTextParser<HtmlFragment>() {
     override val fileExtensions: Set<String> = setOf("html")
     override val type: KType = typeOf<HtmlFragment>()
 
-    override fun parseText(text: String, meta: Meta): HtmlFragment = {
+    override fun parseText(text: String, meta: Meta): HtmlFragment = HtmlFragment { page ->
         div {
-            unsafe { +text }
+            unsafe { +transformText(text, meta, page) }
         }
     }
 }
@@ -44,10 +51,10 @@ internal object SnarkMarkdownParser : SnarkTextParser<HtmlFragment>() {
         val parsedTree = markdownParser.buildMarkdownTreeFromString(text)
         val htmlString = HtmlGenerator(text, parsedTree, markdownFlavor).generateHtml()
 
-        return {
+        return HtmlFragment { page ->
             div {
                 unsafe {
-                    +htmlString
+                    +SnarkHtmlParser.transformText(htmlString, meta, page)
                 }
             }
         }
diff --git a/src/main/kotlin/space/kscience/snark/StaticSiteBuilder.kt b/src/main/kotlin/space/kscience/snark/StaticSiteBuilder.kt
index e4671e6..dbc796b 100644
--- a/src/main/kotlin/space/kscience/snark/StaticSiteBuilder.kt
+++ b/src/main/kotlin/space/kscience/snark/StaticSiteBuilder.kt
@@ -3,7 +3,6 @@ package space.kscience.snark
 import kotlinx.html.HTML
 import kotlinx.html.html
 import kotlinx.html.stream.createHTML
-import space.kscience.dataforge.context.Context
 import space.kscience.dataforge.data.DataTree
 import space.kscience.dataforge.meta.Meta
 import space.kscience.dataforge.meta.withDefault
@@ -67,7 +66,8 @@ internal class StaticSiteBuilder(
     inner class StaticPageBuilder : PageBuilder {
         override val data: DataTree<*> get() = this@StaticSiteBuilder.data
         override val meta: Meta get() = this@StaticSiteBuilder.meta
-        override val context: Context get() = this@StaticSiteBuilder.context
+        override val snark: SnarkPlugin get() = this@StaticSiteBuilder.snark
+
 
 
         override fun resolveRef(ref: String): String = resolveRef(baseUrl, ref)
diff --git a/src/main/kotlin/space/kscience/snark/TextTransformation.kt b/src/main/kotlin/space/kscience/snark/TextTransformation.kt
new file mode 100644
index 0000000..2438d18
--- /dev/null
+++ b/src/main/kotlin/space/kscience/snark/TextTransformation.kt
@@ -0,0 +1,22 @@
+package space.kscience.snark
+
+import space.kscience.dataforge.misc.Type
+import space.kscience.dataforge.names.NameToken
+
+@Type(TextTransformation.TYPE)
+fun interface TextTransformation {
+    context(PageBuilder) fun transform(text: String): String
+
+    companion object {
+        const val TYPE = "snark.textTransformation"
+        val TEXT_TRANSFORMATION_KEY = NameToken("transformation")
+
+        val replaceLinks: TextTransformation = object : TextTransformation {
+            context(PageBuilder) override fun transform(text: String): String {
+                return text.replace("\${homeRef}", homeRef)
+            }
+        }
+    }
+}
+
+