diff --git a/src/pt/mangaonline/build.gradle b/src/pt/mangaonline/build.gradle
new file mode 100644
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--- /dev/null
+++ b/src/pt/mangaonline/build.gradle
@@ -0,0 +1,12 @@
+ext {
+    extName = 'Manga Online'
+    extClass = '.MangaOnline'
+    extVersionCode = 1
+    isNsfw = true
+}
+
+apply from: "$rootDir/common.gradle"
+
+dependencies {
+    implementation(project(':lib:randomua'))
+}
diff --git a/src/pt/mangaonline/res/mipmap-hdpi/ic_launcher.png b/src/pt/mangaonline/res/mipmap-hdpi/ic_launcher.png
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diff --git a/src/pt/mangaonline/res/mipmap-xhdpi/ic_launcher.png b/src/pt/mangaonline/res/mipmap-xhdpi/ic_launcher.png
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diff --git a/src/pt/mangaonline/res/mipmap-xxxhdpi/ic_launcher.png b/src/pt/mangaonline/res/mipmap-xxxhdpi/ic_launcher.png
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diff --git a/src/pt/mangaonline/src/eu/kanade/tachiyomi/extension/pt/mangaonline/MangaOnline.kt b/src/pt/mangaonline/src/eu/kanade/tachiyomi/extension/pt/mangaonline/MangaOnline.kt
new file mode 100644
index 000000000..35720c3b1
--- /dev/null
+++ b/src/pt/mangaonline/src/eu/kanade/tachiyomi/extension/pt/mangaonline/MangaOnline.kt
@@ -0,0 +1,204 @@
+package eu.kanade.tachiyomi.extension.pt.mangaonline
+
+import android.app.Application
+import android.content.SharedPreferences
+import android.util.Log
+import androidx.preference.PreferenceScreen
+import eu.kanade.tachiyomi.lib.randomua.addRandomUAPreferenceToScreen
+import eu.kanade.tachiyomi.lib.randomua.getPrefCustomUA
+import eu.kanade.tachiyomi.lib.randomua.getPrefUAType
+import eu.kanade.tachiyomi.lib.randomua.setRandomUserAgent
+import eu.kanade.tachiyomi.network.GET
+import eu.kanade.tachiyomi.network.interceptor.rateLimitHost
+import eu.kanade.tachiyomi.source.ConfigurableSource
+import eu.kanade.tachiyomi.source.model.Filter
+import eu.kanade.tachiyomi.source.model.FilterList
+import eu.kanade.tachiyomi.source.model.MangasPage
+import eu.kanade.tachiyomi.source.model.Page
+import eu.kanade.tachiyomi.source.model.SChapter
+import eu.kanade.tachiyomi.source.model.SManga
+import eu.kanade.tachiyomi.source.online.ParsedHttpSource
+import eu.kanade.tachiyomi.util.asJsoup
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import okhttp3.HttpUrl.Companion.toHttpUrl
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.Response
+import org.jsoup.nodes.Document
+import org.jsoup.nodes.Element
+import uy.kohesive.injekt.Injekt
+import uy.kohesive.injekt.api.get
+import java.text.SimpleDateFormat
+import java.util.Locale
+import java.util.concurrent.TimeUnit
+
+class MangaOnline : ParsedHttpSource(), ConfigurableSource {
+    override val lang = "pt-BR"
+
+    override val supportsLatest = true
+
+    override val name = "Manga Online"
+
+    override val baseUrl = "https://mangaonline.biz"
+
+    private var genresSet: Set<Genre> = emptySet()
+
+    private val preferences: SharedPreferences =
+        Injekt.get<Application>().getSharedPreferences("source_$id", 0x0000)
+
+    override val client: OkHttpClient =
+        network.cloudflareClient.newBuilder()
+            .setRandomUserAgent(
+                preferences.getPrefUAType(),
+                preferences.getPrefCustomUA(),
+            )
+            .rateLimitHost(baseUrl.toHttpUrl(), 1, 2, TimeUnit.SECONDS)
+            .build()
+
+    override fun setupPreferenceScreen(screen: PreferenceScreen) {
+        addRandomUAPreferenceToScreen(screen)
+    }
+
+    override fun chapterFromElement(element: Element) = SChapter.create().apply {
+        name = element.selectFirst("a")!!.ownText()
+        date_upload = element.selectFirst("a span.date")?.ownText()!!.toDate()
+        setUrlWithoutDomain(element.selectFirst("a")!!.absUrl("href"))
+    }
+
+    override fun chapterListSelector() = "div.episodiotitle"
+
+    override fun imageUrlParse(document: Document) = ""
+
+    override fun latestUpdatesFromElement(element: Element) = SManga.create().apply {
+        title = element.selectFirst("h3 a")!!.ownText()
+            .replace("Capítulo\\s+([\\d.]+)".toRegex(), "")
+            .trim()
+
+        thumbnail_url = element.selectFirst("img")?.absUrl("src")
+
+        val mangaUrl = element.selectFirst("h3 a")!!.absUrl("href")
+            .replace("-capitulo-[\\d-]+".toRegex(), "")
+            .replace("capitulo", "manga")
+
+        setUrlWithoutDomain(mangaUrl)
+    }
+
+    override fun latestUpdatesNextPageSelector() = null
+
+    override fun latestUpdatesRequest(page: Int) = GET("$baseUrl/capitulo/page/$page")
+
+    override fun latestUpdatesParse(response: Response): MangasPage {
+        val mangesPage = super.latestUpdatesParse(response)
+
+        return MangasPage(
+            mangesPage.mangas.distinctBy { it.title },
+            mangesPage.hasNextPage,
+        )
+    }
+
+    override fun latestUpdatesSelector() = popularMangaSelector()
+
+    override fun mangaDetailsParse(document: Document) = SManga.create().apply {
+        val containerInfo = document.selectFirst("div.content > div.sheader")
+        title = containerInfo!!.selectFirst("h1")!!.ownText()
+        thumbnail_url = containerInfo.selectFirst("img")?.absUrl("src")
+        description = containerInfo.selectFirst("p:last-child")?.ownText()
+        genre = containerInfo.select("div.sgeneros a")
+            .map { it.ownText() }
+            .filter { it.length > 1 }
+            .joinToString()
+    }
+
+    override fun pageListParse(document: Document): List<Page> {
+        return document.select("img[loading=lazy]").mapIndexed { i, it ->
+            Page(i, imageUrl = it.absUrl("src"))
+        }
+    }
+
+    override fun popularMangaFromElement(element: Element) = SManga.create().apply {
+        title = element.selectFirst("h3 a")!!.ownText()
+        thumbnail_url = element.selectFirst("img")?.absUrl("src")
+        setUrlWithoutDomain(element.selectFirst("h3 a")!!.absUrl("href"))
+    }
+
+    override fun popularMangaNextPageSelector() = null
+
+    override fun popularMangaRequest(page: Int): Request = GET("$baseUrl/mais-vistos/")
+
+    override fun popularMangaSelector() = "div.content .item"
+
+    override fun searchMangaFromElement(element: Element) = popularMangaFromElement(element)
+
+    override fun searchMangaNextPageSelector() = ".pagination > .current + a"
+
+    override fun searchMangaRequest(page: Int, query: String, filters: FilterList): Request {
+        if (query.isNotBlank()) {
+            val url = "$baseUrl/search".toHttpUrl().newBuilder()
+                .addPathSegment(query)
+                .build()
+            return GET(url)
+        }
+
+        val path = when (val genre = (filters.first() as GenreList).selected) {
+            Genre.GLOBAL -> "$baseUrl/${genre.id}"
+            else -> "$baseUrl/genero/${genre.id}"
+        }
+
+        return GET("$path/page/$page")
+    }
+
+    override fun searchMangaSelector() = popularMangaSelector()
+
+    override fun getFilterList(): FilterList {
+        CoroutineScope(Dispatchers.IO).launch {
+            fetchMangaGenre()
+        }
+
+        genresSet += Genre.GLOBAL
+
+        return FilterList(
+            GenreList(
+                title = "Gêneros",
+                genres = genresSet.toTypedArray(),
+            ),
+        )
+    }
+
+    private fun fetchMangaGenre() {
+        try {
+            val request = client
+                .newCall(GET("$baseUrl/generos/"))
+                .execute()
+
+            val document = request.asJsoup()
+
+            genresSet = document.select(".wp-content a").map { element ->
+                val id = element.absUrl("href")
+                    .split("/")
+                    .last { it.isNotEmpty() }
+                Genre(element.ownText(), id)
+            }.toSet()
+        } catch (e: Exception) {
+            Log.e("MangaOnline", e.stackTraceToString())
+        }
+    }
+
+    private fun String.toDate() =
+        try { dateFormat.parse(trim())!!.time } catch (_: Exception) { 0L }
+
+    private val dateFormat = SimpleDateFormat("dd/MM/yyyy", Locale("pt", "BR"))
+}
+
+data class Genre(val name: String, val id: String) {
+    override fun toString() = name
+
+    companion object {
+        val GLOBAL = Genre("Todos", "manga")
+    }
+}
+
+class GenreList(title: String, private val genres: Array<Genre>) : Filter.Select<Genre>(title, genres) {
+    val selected get() = genres[state]
+}