diff --git a/source/generate/index.ts b/source/generate/index.ts
index 1d708be..a3bfece 100644
--- a/source/generate/index.ts
+++ b/source/generate/index.ts
@@ -6,13 +6,14 @@
  * -   series must start with a number followed by an underscore
  */
 
-import fs from "fs" // read and write files
+import fs from "fs"
 
-import { Map, SeriesMap } from "./types"
 import { recursiveParse } from "./recursiveParse"
 import { contentDirectoryPath, mapFilePath, markdownPath } from "./config"
 import { saveIndex } from "./searchIndex"
 
+import { Map, ParseMode, SeriesMap } from "../types/typing"
+
 // searchable data that will be converted to JSON string
 export const map: Map = {
 	date: {},
@@ -53,9 +54,9 @@ if (!fs.lstatSync(markdownPath + "/unsearchable").isDirectory())
 if (!fs.lstatSync(markdownPath + "/series").isDirectory())
 	throw Error(`Cannot find directory: ${markdownPath + "/posts"}`)
 
-recursiveParse("posts", markdownPath + "/posts")
-recursiveParse("unsearchable", markdownPath + "/unsearchable")
-recursiveParse("series", markdownPath + "/series")
+recursiveParse(ParseMode.POSTS, markdownPath + "/posts")
+recursiveParse(ParseMode.UNSEARCHABLE, markdownPath + "/unsearchable")
+recursiveParse(ParseMode.SERIES, markdownPath + "/series")
 
 // sort dates
 let dateKeys: string[] = []
diff --git a/source/generate/parseMarkdown.ts b/source/generate/parseMarkdown.ts
index 13205d6..8446051 100644
--- a/source/generate/parseMarkdown.ts
+++ b/source/generate/parseMarkdown.ts
@@ -28,7 +28,7 @@ const md = markdownIt({
 	})
 	.use(markdownItAnchor, {})
 
-export function parseMarkdown(markdownRaw: string): string {
+export default function parseMarkdown(markdownRaw: string): string {
 	return (
 		md.render(markdownRaw.slice(nthIndex(markdownRaw, "---", 2) + 3)) || ""
 	)
diff --git a/source/generate/recursiveParse.ts b/source/generate/recursiveParse.ts
index df7eae4..1e0a966 100644
--- a/source/generate/recursiveParse.ts
+++ b/source/generate/recursiveParse.ts
@@ -5,287 +5,352 @@ import toc from "markdown-toc" // table of contents generation
 import { JSDOM } from "jsdom" // HTML DOM parsing
 
 import { nthIndex, path2FileOrFolderName, path2URL, writeToJSON } from "./util"
-import { parseMarkdown } from "./parseMarkdown"
+import parseMarkdown from "./parseMarkdown"
 
 import { contentDirectoryPath } from "./config"
 import { addDocument } from "./searchIndex"
 import { map, seriesMap } from "."
 
-// A recursive function that calls itself for every files and directories that it finds
-export function recursiveParse(
-	mode: "posts" | "series" | "unsearchable",
-	fileOrFolderPath: string
-) {
-	if (mode == "unsearchable") {
-		// illegal names
-		if (
-			fileOrFolderPath == "./markdown/unsearchable/posts" ||
-			fileOrFolderPath == "./markdown/unsearchable/series"
-		)
-			throw Error(
-				`Illegal name (posts/series) in path: "${fileOrFolderPath}".`
-			)
+import { MarkdownData, ParseMode, PostData } from "../types/typing"
+
+// path that should not be checked when parsing in unsearchable mode
+const illegalPaths = [
+	"./markdown/unsearchable/posts",
+	"./markdown/unsearchable/series",
+]
+
+interface DataToPass {
+	path: string
+	urlPath: string
+	fileOrFolderName: string
+	markdownRaw: string
+	markdownData: MarkdownData
+	humanizedDuration: string
+	totalWords: number
+}
+
+/**
+ * A recursive function that calls itself for every files and directories that it finds
+ *
+ * @param {ParseMode} mode
+ * @param {string} path - path of file or folder
+ *
+ * @returns {void}
+ */
+export function recursiveParse(mode: ParseMode, path: string): void {
+	// don't parse specific directories when parsing unsearchable content
+	if (mode == ParseMode.UNSEARCHABLE) {
+		if (illegalPaths.includes(path)) {
+			throw Error(`Illegal name (posts/series) in path: "${path}".`)
+		}
 	}
 
-	// get string after the last slash character
-	const fileOrFolderName = path2FileOrFolderName(fileOrFolderPath)
-
-	// ignore if file or directory name starts with a underscore
+	const fileOrFolderName = path2FileOrFolderName(path)
 	if (fileOrFolderName.startsWith("_")) return
 
-	// get data about the given path
-	const stats = fs.lstatSync(fileOrFolderPath)
+	const stats = fs.lstatSync(path)
 
 	// if it's a directory, call this function to every files/directories in it
 	// if it's a file, parse it and then save it to file
 	if (stats.isDirectory()) {
-		fs.readdirSync(fileOrFolderPath).map((childPath) => {
-			recursiveParse(mode, `${fileOrFolderPath}/${childPath}`)
+		fs.readdirSync(path).map((childPath) => {
+			recursiveParse(mode, `${path}/${childPath}`)
 		})
 	} else if (stats.isFile()) {
-		// skip if it is not a markdown file
-		if (!fileOrFolderName.endsWith(".md")) {
-			console.log(`Ignoring non markdown file at: ${fileOrFolderPath}`)
-			return
+		parseFile(mode, path, fileOrFolderName)
+	}
+}
+
+function parseFile(
+	mode: ParseMode,
+	path: string,
+	fileOrFolderName: string
+): void {
+	// skip if it is not a markdown file
+	if (!fileOrFolderName.endsWith(".md")) {
+		console.log(`Ignoring non markdown file at: ${path}`)
+		return
+	}
+
+	const markdownRaw = fs.readFileSync(path, "utf8")
+	const markdownData: MarkdownData = parseFrontMatter(markdownRaw, path, mode)
+
+	// https://github.com/pritishvaidya/read-time-estimate
+	const { humanizedDuration, totalWords } = readTimeEstimate(
+		markdownData.content,
+		275,
+		12,
+		500,
+		["img", "Image"]
+	)
+
+	const dataToPass: DataToPass = {
+		path,
+		urlPath: path2URL(path),
+		fileOrFolderName,
+		markdownRaw,
+		markdownData,
+		humanizedDuration,
+		totalWords,
+	}
+
+	switch (mode) {
+		case ParseMode.POSTS: {
+			parsePost(dataToPass)
+			break
 		}
 
-		// read markdown file
-		const markdownRaw = fs.readFileSync(fileOrFolderPath, "utf8")
-
-		// parse markdown metadata
-		const markdownData = matter(
-			markdownRaw.slice(0, nthIndex(markdownRaw, "---", 2) + 3)
-		).data
-
-		if (!markdownData.title)
-			throw Error(`Title is not defined in file: ${fileOrFolderPath}`)
-
-		const dom = new JSDOM(parseMarkdown(markdownRaw))
-
-		// add .hljs to all block codes
-		dom.window.document.querySelectorAll("pre > code").forEach((item) => {
-			item.classList.add("hljs")
-		})
-
-		markdownData.content = dom.window.document.documentElement.innerHTML
-
-		// https://github.com/pritishvaidya/read-time-estimate
-		const { humanizedDuration, totalWords } = readTimeEstimate(
-			markdownData.content,
-			275,
-			12,
-			500,
-			["img", "Image"]
-		)
-
-		if (mode == "posts") {
-			if (!markdownData.date) {
-				throw Error(`Date is not defined in file: ${fileOrFolderPath}`)
-			}
-
-			// path that will be used as site url (starts with a slash)
-			const urlPath = path2URL(fileOrFolderPath)
-
-			writeToJSON(
-				`${contentDirectoryPath}${urlPath}.json`,
-				JSON.stringify({
-					content: markdownData.content,
-					toc: toc(markdownRaw).json,
-				})
-			)
-
-			// Parse data that will be written to map.js
-			const postData = {
-				title: markdownData.title,
-				preview: "",
-				date: "",
-				readTime: humanizedDuration,
-				wordCount: totalWords,
-				tags: [],
-			}
-
-			// content preview
-			// parsedMarkdown.excerpt is intentionally not used
-			// todo: fix potential improper closing of html tag
-			const slicedContent = markdownData.content.split(" ")
-			if (slicedContent.length > 19) {
-				postData.preview = slicedContent.slice(0, 19).join(" ") + " ..."
-			} else {
-				postData.preview = markdownData.content
-			}
-
-			// date
-			const postDate = new Date(markdownData.date)
-			postData.date = postDate.toLocaleString("default", {
-				month: "short",
-				day: "numeric",
-				year: "numeric",
-			})
-
-			const YYYY_MM_DD = postDate.toISOString().split("T")[0]
-			if (map.date[YYYY_MM_DD]) {
-				map.date[YYYY_MM_DD].push(urlPath)
-			} else {
-				map.date[YYYY_MM_DD] = [urlPath]
-			}
-
-			//tags
-			postData.tags = markdownData.tags
-			if (postData.tags) {
-				postData.tags.forEach((tag) => {
-					if (map.tags[tag]) {
-						map.tags[tag].push(urlPath)
-					} else {
-						map.tags[tag] = [urlPath]
-					}
-				})
-			}
-
-			map.posts[urlPath] = postData
-			addDocument({
-				title: markdownData.title,
-				body: markdownData.content,
-				url: urlPath,
-			})
-		} else if (mode == "unsearchable") {
-			// path that will be used as site url (starts with a slash)
-			const _urlPath = path2URL(fileOrFolderPath)
-			const urlPath = _urlPath.slice(
-				_urlPath
+		case ParseMode.UNSEARCHABLE: {
+			dataToPass.urlPath = dataToPass.urlPath.slice(
+				dataToPass.urlPath
 					.slice(1) // ignore the first slash
 					.indexOf("/") + 1
 			)
 
-			writeToJSON(
-				`${contentDirectoryPath}/unsearchable${urlPath}.json`,
-				JSON.stringify({
-					content: markdownData.content,
-				})
-			)
+			parseUnsearchable(dataToPass)
+			break
+		}
 
-			// Parse data that will be written to map.js
-			map.unsearchable[urlPath] = {
-				title: markdownData.title,
-			}
-
-			addDocument({
-				title: markdownData.title,
-				body: markdownData.content,
-				url: urlPath,
-			})
-		} else if (mode == "series") {
-			if (
-				!fileOrFolderName.includes("_") &&
-				!fileOrFolderName.startsWith("0")
-			)
-				throw Error(
-					`Invalid series post file name at: ${fileOrFolderPath}`
-				)
-
-			if (!markdownData.date) {
-				throw Error(`Date is not defined in file: ${fileOrFolderPath}`)
-			}
-
-			// path that will be used as site url (starts with a slash)
-			let urlPath = path2URL(fileOrFolderPath)
+		case ParseMode.SERIES: {
+			let urlPath = dataToPass.urlPath
 			urlPath = urlPath.slice(0, urlPath.lastIndexOf("_"))
-			urlPath = urlPath.replace(/\/$/, "") // remove trailing slash
+			dataToPass.urlPath = urlPath.replace(/\/$/, "") // remove trailing slash
 
-			writeToJSON(
-				`${contentDirectoryPath}${urlPath}.json`,
-				JSON.stringify({
-					content: markdownData.content,
-					toc: toc(markdownRaw).json,
-				})
-			)
-
-			// Parse data that will be written to map.js
-			const postData = {
-				title: markdownData.title,
-				preview: "",
-				date: "",
-				readTime: humanizedDuration,
-				wordCount: totalWords,
-				tags: [],
-			}
-
-			// content preview
-			// parsedMarkdown.excerpt is intentionally not used
-			// todo: fix potential improper closing of html tag
-			const slicedContent = markdownData.content.split(" ")
-			if (slicedContent.length > 19) {
-				postData.preview = slicedContent.slice(0, 19).join(" ") + " ..."
-			} else {
-				postData.preview = markdownData.content
-			}
-
-			// date
-			const postDate = new Date(markdownData.date)
-			postData.date = postDate.toLocaleString("default", {
-				month: "short",
-				day: "numeric",
-				year: "numeric",
-			})
-
-			const YYYY_MM_DD = postDate.toISOString().split("T")[0]
-			if (map.date[YYYY_MM_DD]) {
-				map.date[YYYY_MM_DD].push(urlPath)
-			} else {
-				map.date[YYYY_MM_DD] = [urlPath]
-			}
-
-			//tags
-			postData.tags = markdownData.tags
-			if (postData.tags) {
-				postData.tags.forEach((tag) => {
-					if (map.tags[tag]) {
-						map.tags[tag].push(urlPath)
-					} else {
-						map.tags[tag] = [urlPath]
-					}
-				})
-			}
-
-			if (fileOrFolderName.startsWith("0")) {
-				map.series[urlPath] = { ...postData, order: [], length: 0 }
-			} else {
-				map.posts[urlPath] = postData
-				addDocument({
-					title: markdownData.title,
-					body: markdownData.content,
-					url: urlPath,
-				})
-				for (const key of Object.keys(map.series)) {
-					if (
-						urlPath.slice(0, urlPath.lastIndexOf("/")).includes(key)
-					) {
-						const index = parseInt(
-							fileOrFolderName.slice(
-								0,
-								fileOrFolderName.lastIndexOf("_")
-							)
-						)
-
-						if (isNaN(index)) {
-							throw Error(
-								`Invalid series index at: ${fileOrFolderPath}`
-							)
-						}
-
-						const itemToPush = {
-							index: index,
-							url: urlPath,
-						}
-
-						if (seriesMap[key]) {
-							seriesMap[key].push(itemToPush)
-						} else {
-							seriesMap[key] = [itemToPush]
-						}
-						break
-					}
-				}
-			}
+			parseSeries(dataToPass)
+			break
 		}
 	}
 }
+
+function parsePost(data: DataToPass): void {
+	const {
+		urlPath,
+		markdownRaw,
+		markdownData,
+		humanizedDuration,
+		totalWords,
+	} = data
+
+	const postData: PostData = {
+		title: markdownData.title,
+		date: "",
+		readTime: humanizedDuration,
+		wordCount: totalWords,
+		tags: [],
+	}
+
+	/**
+	 * Dates
+	 */
+
+	const postDate = new Date(markdownData.date)
+	postData.date = postDate.toLocaleString("default", {
+		month: "short",
+		day: "numeric",
+		year: "numeric",
+	})
+
+	const YYYY_MM_DD = postDate.toISOString().split("T")[0]
+	if (map.date[YYYY_MM_DD]) {
+		map.date[YYYY_MM_DD].push(urlPath)
+	} else {
+		map.date[YYYY_MM_DD] = [urlPath]
+	}
+
+	/**
+	 * Tags
+	 */
+
+	postData.tags = markdownData.tags
+	if (postData.tags) {
+		postData.tags.forEach((tag) => {
+			if (map.tags[tag]) {
+				map.tags[tag].push(urlPath)
+			} else {
+				map.tags[tag] = [urlPath]
+			}
+		})
+	}
+
+	/**
+	 *
+	 */
+
+	map.posts[urlPath] = postData
+	addDocument({
+		title: markdownData.title,
+		body: markdownData.content,
+		url: urlPath,
+	})
+	writeToJSON(
+		`${contentDirectoryPath}${urlPath}.json`,
+		JSON.stringify({
+			content: markdownData.content,
+			toc: toc(markdownRaw).json,
+		})
+	)
+}
+
+function parseSeries(data: DataToPass): void {
+	const {
+		path,
+		urlPath,
+		fileOrFolderName,
+		markdownRaw,
+		markdownData,
+		humanizedDuration,
+		totalWords,
+	} = data
+
+	if (!fileOrFolderName.includes("_") && !fileOrFolderName.startsWith("0"))
+		throw Error(`Invalid series post file name at: ${path}`)
+
+	const postData: PostData = {
+		title: markdownData.title,
+		date: "",
+		readTime: humanizedDuration,
+		wordCount: totalWords,
+		tags: [],
+	}
+
+	/**
+	 * Date
+	 */
+
+	const postDate = new Date(markdownData.date)
+	postData.date = postDate.toLocaleString("default", {
+		month: "short",
+		day: "numeric",
+		year: "numeric",
+	})
+
+	const YYYY_MM_DD = postDate.toISOString().split("T")[0]
+	if (map.date[YYYY_MM_DD]) {
+		map.date[YYYY_MM_DD].push(urlPath)
+	} else {
+		map.date[YYYY_MM_DD] = [urlPath]
+	}
+
+	/**
+	 * Tags
+	 */
+
+	postData.tags = markdownData.tags
+	if (postData.tags) {
+		postData.tags.forEach((tag) => {
+			if (map.tags[tag]) {
+				map.tags[tag].push(urlPath)
+			} else {
+				map.tags[tag] = [urlPath]
+			}
+		})
+	}
+
+	// series markdown starting with 0 is a series descriptor
+	if (fileOrFolderName.startsWith("0")) {
+		map.series[urlPath] = {
+			...postData,
+			order: [],
+			length: 0,
+		}
+	} else {
+		addDocument({
+			title: markdownData.title,
+			body: markdownData.content,
+			url: urlPath,
+		})
+
+		map.posts[urlPath] = postData
+
+		for (const key of Object.keys(map.series)) {
+			if (urlPath.slice(0, urlPath.lastIndexOf("/")).includes(key)) {
+				const index = parseInt(
+					fileOrFolderName.slice(0, fileOrFolderName.lastIndexOf("_"))
+				)
+
+				if (isNaN(index))
+					throw Error(`Invalid series index at: ${path}`)
+
+				const itemToPush = {
+					index: index,
+					url: urlPath,
+				}
+
+				if (seriesMap[key]) {
+					seriesMap[key].push(itemToPush)
+				} else {
+					seriesMap[key] = [itemToPush]
+				}
+				break
+			}
+		}
+	}
+
+	/**
+	 *
+	 */
+
+	writeToJSON(
+		`${contentDirectoryPath}${urlPath}.json`,
+		JSON.stringify({
+			content: markdownData.content,
+			toc: toc(markdownRaw).json,
+		})
+	)
+}
+
+function parseUnsearchable(data: DataToPass): void {
+	const { urlPath, markdownData } = data
+
+	addDocument({
+		title: markdownData.title,
+		body: markdownData.content,
+		url: urlPath,
+	})
+
+	// Parse data that will be written to map.js
+	map.unsearchable[urlPath] = {
+		title: markdownData.title,
+	}
+
+	writeToJSON(
+		`${contentDirectoryPath}/unsearchable${urlPath}.json`,
+		JSON.stringify({
+			content: markdownData.content,
+		})
+	)
+}
+
+/**
+ * todo: accurately calculate start and end of front matter
+ *
+ * @param {string} markdownRaw
+ * @param {string} path
+ *
+ * @returns {MarkdownData}
+ */
+function parseFrontMatter(
+	markdownRaw: string,
+	path: string,
+	mode: ParseMode
+): MarkdownData {
+	const result = matter(
+		markdownRaw.slice(0, nthIndex(markdownRaw, "---", 2) + 3)
+	).data
+
+	if (!result.title) throw Error(`Title is not defined in file: ${path}`)
+
+	if (mode != ParseMode.UNSEARCHABLE && !result.date)
+		throw Error(`Date is not defined in file: ${path}`)
+
+	const dom = new JSDOM(parseMarkdown(markdownRaw))
+
+	// add .hljs class to all block codes
+	dom.window.document.querySelectorAll("pre > code").forEach((item) => {
+		item.classList.add("hljs")
+	})
+
+	result.content = dom.window.document.documentElement.innerHTML
+
+	return result as MarkdownData
+}
diff --git a/source/generate/types.ts b/source/generate/types.ts
deleted file mode 100644
index 06bbe3f..0000000
--- a/source/generate/types.ts
+++ /dev/null
@@ -1,56 +0,0 @@
-export interface Map {
-	// key: YYYY-MM-DD
-	// value: url
-	date: {
-		[key: string]: string[]
-	}
-
-	// key: tag name
-	// value: url
-	tags: {
-		[key: string]: string[]
-	}
-
-	// list of all meta data
-	meta: {
-		tags: string[]
-	}
-
-	// searchable, non-series posts
-	// must have a post date
-	// tag is not required
-	posts: {
-		[key: string]: {
-			title: string
-			date: string
-			tags: string[]
-			preview: string
-		}
-	}
-
-	// series posts have "previous post" and "next post" button so they need to be ordered
-	series: {
-		[key: string]: {
-			title: string
-			length: number
-			order: string[] // url order
-			tags: string[]
-		}
-	}
-
-	// urls of unsearchable posts
-	// it is here to quickly check if a post exists or not
-	unsearchable: {
-		[key: string]: {
-			title: string
-		}
-	}
-}
-
-export interface SeriesMap {
-	// key: url
-	[key: string]: {
-		index: number
-		url: string
-	}[]
-}
diff --git a/source/generate/util.ts b/source/generate/util.ts
index d83b50d..279aaa8 100644
--- a/source/generate/util.ts
+++ b/source/generate/util.ts
@@ -3,7 +3,12 @@ import { relative } from "path"
 
 import { markdownPath } from "./config"
 
-// converts file path to url
+/**
+ * converts file path to url path that will be used in the url (starts with a slash)
+ *
+ * @param {string} pathToConvert
+ * @returns {string}
+ */
 export function path2URL(pathToConvert: string): string {
 	return `/${relative(markdownPath, pathToConvert)}`
 		.replace(/\.[^/.]+$/, "") // remove the file extension
diff --git a/source/src/App.tsx b/source/src/App.tsx
index 9e3ade9..a557773 100644
--- a/source/src/App.tsx
+++ b/source/src/App.tsx
@@ -5,7 +5,7 @@ import { Helmet } from "react-helmet-async"
 import storage from "local-storage-fallback"
 import { isIE } from "react-device-detect"
 
-import { ThemeType } from "./types/styled-comonents"
+import { ThemeType } from "../types/styled-components"
 
 import Loading from "./components/Loading"
 import Navbar from "./components/Navbar"
diff --git a/source/src/components/PostCard.tsx b/source/src/components/PostCard.tsx
index 31d6da0..5312ffa 100644
--- a/source/src/components/PostCard.tsx
+++ b/source/src/components/PostCard.tsx
@@ -1,7 +1,7 @@
 import styled from "styled-components"
 import { useNavigate } from "react-router-dom"
 
-import { Post } from "../types/typings"
+import { PostData } from "../../types/typing"
 
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome"
 import {
@@ -40,6 +40,7 @@ const StyledPostCard = styled(MainContent)`
 const StyledTitle = styled.h1`
 	font-size: 2rem;
 	font-style: bold;
+	margin: 0;
 	margin-bottom: 1rem;
 `
 
@@ -51,15 +52,7 @@ const StyledMetaContainer = styled.small`
 		})};
 `
 
-const StyledPostCardContent = styled.div`
-	color: ${(props) =>
-		theming.theme(props.theme.currentTheme, {
-			light: "grey",
-			dark: "lightgrey",
-		})};
-`
-
-interface _PostDateBase extends Post {
+interface _PostDateBase extends PostData {
 	url: string
 }
 
@@ -72,16 +65,17 @@ const PostCard = (props: Props) => {
 
 	return (
 		<StyledPostCard
-			key={props.postData.url}
-			onClick={() => {
+			onClick={() =>
 				navigate(process.env.PUBLIC_URL + props.postData.url)
-			}}
+			}
 		>
 			<StyledTitle>{props.postData?.title || "No title"}</StyledTitle>
 
+			<br />
+
 			<StyledMetaContainer>
 				<TagList direction="left">
-					{props.postData.tags ? (
+					{props.postData.tags &&
 						props.postData.tags.map((tag) => {
 							return (
 								<Tag
@@ -89,11 +83,9 @@ const PostCard = (props: Props) => {
 									text={tag}
 								/>
 							)
-						})
-					) : (
-						<></>
-					)}
+						})}
 				</TagList>
+				<hr />
 				<FontAwesomeIcon icon={faCalendar} />
 				&nbsp;&nbsp;&nbsp;
 				{props.postData?.date || "Unknown date"}
@@ -110,15 +102,6 @@ const PostCard = (props: Props) => {
 					? props.postData.wordCount + " words"
 					: "unknown words"}
 			</StyledMetaContainer>
-
-			<hr />
-
-			<StyledPostCardContent
-				className="white-link"
-				dangerouslySetInnerHTML={{
-					__html: props.postData.preview,
-				}}
-			/>
 		</StyledPostCard>
 	)
 }
diff --git a/source/src/components/Tag.tsx b/source/src/components/Tag.tsx
index 4687584..2f1fd9b 100644
--- a/source/src/components/Tag.tsx
+++ b/source/src/components/Tag.tsx
@@ -1,7 +1,7 @@
 import { MouseEvent } from "react"
 import styled from "styled-components"
 
-import { faTag } from "@fortawesome/free-solid-svg-icons"
+import { faHashtag } from "@fortawesome/free-solid-svg-icons"
 import { FontAwesomeIcon } from "@fortawesome/react-fontawesome"
 
 import theming from "../styles/theming"
@@ -24,7 +24,7 @@ interface Props {
 const Tag = (props: Props) => {
 	return (
 		<StyledTag onClick={props.onClick || undefined}>
-			<FontAwesomeIcon icon={faTag} /> &nbsp;{props.text}
+			<FontAwesomeIcon icon={faHashtag} /> &nbsp;{props.text}
 		</StyledTag>
 	)
 }
diff --git a/source/src/pages/Page/Meta.tsx b/source/src/pages/Page/Meta.tsx
index c751ceb..f5d10bf 100644
--- a/source/src/pages/Page/Meta.tsx
+++ b/source/src/pages/Page/Meta.tsx
@@ -6,7 +6,7 @@ import {
 	faHourglass,
 } from "@fortawesome/free-solid-svg-icons"
 
-import { FetchedPage } from "../../types/typings"
+import { FetchedPage } from "../../../types/typing"
 import theming from "../../styles/theming"
 
 const StyledMetaContainer = styled.div`
diff --git a/source/src/pages/Page/Toc.tsx b/source/src/pages/Page/Toc.tsx
index 06fb96c..2580652 100644
--- a/source/src/pages/Page/Toc.tsx
+++ b/source/src/pages/Page/Toc.tsx
@@ -8,7 +8,7 @@ import styled from "styled-components"
 
 import theming from "../../styles/theming"
 
-import { FetchedPage } from "../../types/typings"
+import { FetchedPage } from "../../../types/typing"
 
 const StyledTocToggleButton = styled.button`
 	border: none;
diff --git a/source/src/pages/Page/index.tsx b/source/src/pages/Page/index.tsx
index 2460bd1..d4983f8 100644
--- a/source/src/pages/Page/index.tsx
+++ b/source/src/pages/Page/index.tsx
@@ -4,7 +4,7 @@ import { useLocation } from "react-router-dom"
 import styled from "styled-components"
 import { HashLink } from "react-router-hash-link"
 
-import { TocElement, FetchedPage, Map } from "../../types/typings"
+import { TocElement, FetchedPage, Map } from "../../../types/typing"
 
 import MainContent from "../../components/MainContent"
 import Loading from "../../components/Loading"
diff --git a/source/src/pages/PostList.tsx b/source/src/pages/PostList.tsx
index def7c3e..0ad06de 100644
--- a/source/src/pages/PostList.tsx
+++ b/source/src/pages/PostList.tsx
@@ -12,7 +12,7 @@ import PostCard from "../components/PostCard"
 import _map from "../data/map.json"
 import theming from "../styles/theming"
 
-import { Map } from "../types/typings"
+import { Map } from "../../types/typing"
 
 const map: Map = _map
 
diff --git a/source/src/pages/Search/TagSelect.tsx b/source/src/pages/Search/TagSelect.tsx
index 8d34c66..7d063f0 100644
--- a/source/src/pages/Search/TagSelect.tsx
+++ b/source/src/pages/Search/TagSelect.tsx
@@ -5,7 +5,7 @@ import Select from "react-select"
 import theming from "../../styles/theming"
 
 import { Query } from "."
-import { Map } from "../../types/typings"
+import { Map } from "../../../types/typing"
 import _map from "../../data/map.json"
 
 const map: Map = _map
diff --git a/source/src/pages/Search/index.tsx b/source/src/pages/Search/index.tsx
index 679689e..806ea3c 100644
--- a/source/src/pages/Search/index.tsx
+++ b/source/src/pages/Search/index.tsx
@@ -19,7 +19,7 @@ import MainContent from "../../components/MainContent"
 import SearchBar from "./SearchBar"
 import TagSelect, { TagsData } from "./TagSelect"
 
-import { Map } from "../../types/typings"
+import { Map } from "../../../types/typing"
 
 import "react-date-range/dist/styles.css"
 import "react-date-range/dist/theme/default.css"
diff --git a/source/src/styles/globalStyle.tsx b/source/src/styles/globalStyle.tsx
index 177b3fa..a2c0812 100644
--- a/source/src/styles/globalStyle.tsx
+++ b/source/src/styles/globalStyle.tsx
@@ -96,7 +96,7 @@ const kbdCSS = css`
 				dark: "white",
 			})};
 		line-height: 1.4;
-		font-size: 10px;
+		font-size: 13.5px;
 		display: inline-block;
 		box-shadow: ${(props) =>
 			theming.theme(props.theme.currentTheme, {
@@ -108,11 +108,6 @@ const kbdCSS = css`
 				light: "#F7F7F7",
 				dark: "black",
 			})};
-		text-shadow: ${(props) =>
-			theming.theme(props.theme.currentTheme, {
-				light: "0 1px 0 white",
-				dark: "0 1px 0 black",
-			})};
 	}
 `
 
@@ -165,14 +160,15 @@ const blockquoteCSS = css`
 	}
 `
 
-const whiteLinkCSS = css`
-	.white-link a {
-		text-decoration: none;
-		color: ${theming.color.linkColor};
+const headerCSS = css`
+	/* intentionally left out h1 */
 
-		&:visited {
-			color: ${theming.color.linkColor};
-		}
+	h2,
+	h3,
+	h4,
+	h5,
+	h6 {
+		margin-top: 2.5rem;
 	}
 `
 
@@ -182,7 +178,7 @@ const globalStyle = css`
 	${kbdCSS}
 	${tableCSS}
 	${blockquoteCSS}
-	${whiteLinkCSS}
+	${headerCSS}
 
 	body {
 		overflow-x: hidden;
diff --git a/source/src/styles/theming.ts b/source/src/styles/theming.ts
index b89ebda..df819d8 100644
--- a/source/src/styles/theming.ts
+++ b/source/src/styles/theming.ts
@@ -23,7 +23,7 @@ export default {
 		x2_small: "3px",
 		x_small: "8px",
 		small: 0,
-		medium: "14px",
+		medium: "1rem",
 		large: 0,
 		x_large: 0,
 		screen_size1: "1000px",
diff --git a/source/src/types/typings.d.ts b/source/src/types/typings.d.ts
deleted file mode 100644
index 2b4debc..0000000
--- a/source/src/types/typings.d.ts
+++ /dev/null
@@ -1,50 +0,0 @@
-export interface TocElement {
-	slug: string
-	content: string
-	i: number
-	lvl: number
-}
-
-export interface Post {
-	title: string
-	preview: string
-	date: string
-	readTime: string
-	wordCount: number
-	tags?: string[]
-}
-
-export interface Series {
-	title: string
-	preview: string
-	date: string
-	readTime: string
-	wordCount: number
-	order: string[]
-	length: number
-}
-
-export interface FetchedPage {
-	title: string
-	preview: string
-	date: string
-	readTime: string
-	wordCount: number
-	tags: string[]
-	toc: JSX.Element | undefined
-	content: string
-}
-
-interface Map {
-	date: { [date: string]: string[] }
-	tags: { [tag: string]: string[] }
-	meta: { tags: string[] }
-	posts: { [url: string]: Post }
-	series: { [url: string]: Series }
-	unsearchable: { [url: string]: { title: string } }
-}
-
-declare module "*.json" {
-	const data: Map
-	export default data
-}
diff --git a/source/generate/types/markdown-it-task-checkbox.d.ts b/source/types/markdown-it-task-checkbox.d.ts
similarity index 100%
rename from source/generate/types/markdown-it-task-checkbox.d.ts
rename to source/types/markdown-it-task-checkbox.d.ts
diff --git a/source/src/types/react-date-range.d.ts b/source/types/react-date-range.d.ts
similarity index 100%
rename from source/src/types/react-date-range.d.ts
rename to source/types/react-date-range.d.ts
diff --git a/source/src/types/styled-comonents.d.ts b/source/types/styled-components.ts
similarity index 100%
rename from source/src/types/styled-comonents.d.ts
rename to source/types/styled-components.ts
diff --git a/source/types/typing.ts b/source/types/typing.ts
new file mode 100644
index 0000000..0046da3
--- /dev/null
+++ b/source/types/typing.ts
@@ -0,0 +1,90 @@
+export enum ParseMode {
+	POSTS,
+	SERIES,
+	UNSEARCHABLE,
+}
+
+export interface TocElement {
+	slug: string
+	content: string
+	i: number
+	lvl: number
+}
+
+export interface Base {}
+
+export interface PostData {
+	title: string
+	date: string
+	readTime: string
+	wordCount: number
+	tags?: string[]
+}
+
+export interface Series {
+	title: string
+	date: string
+	readTime: string
+	wordCount: number
+	order: string[]
+	length: number
+	tags?: string[]
+}
+
+export interface FetchedPage {
+	title: string
+	date: string
+	readTime: string
+	wordCount: number
+	tags: string[]
+	toc?: JSX.Element
+	content: string
+}
+
+export interface Map {
+	// key: YYYY-MM-DD
+	// value: url
+	date: { [key: string]: string[] }
+
+	// key: tag name
+	// value: url
+	tags: {
+		[key: string]: string[]
+	}
+
+	// list of all meta data
+	meta: {
+		tags: string[]
+	}
+
+	// searchable, non-series posts
+	// must have a post date
+	// tag is not required
+	posts: {
+		[key: string]: PostData
+	}
+
+	// series posts have "previous post" and "next post" button so they need to be ordered
+	series: { [key: string]: Series }
+
+	// urls of unsearchable posts
+	// it is here to quickly check if a post exists or not
+	unsearchable: { [key: string]: { title: string } }
+}
+
+export interface SeriesEntry {
+	index: number
+	url: string
+}
+
+export interface SeriesMap {
+	// key: url
+	[key: string]: SeriesEntry[]
+}
+
+export interface MarkdownData {
+	content: string
+	date: string
+	title: string
+	tags: string[]
+}