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WordPress Template Hierarchy

Every Template in wordpress has a corresponding php file. I have added the php files that each template uses. Below is a table with further explanations for each template.

WP Template NameCorresponding php fileDescription of php file.
All archives archive.phpIIf you do not have a category–specific template (category.php) or tag-specific template (tag.php), WordPress will fall back to the general archive template: archive.php.
Example You have a navigation menu with 3 categories:ProteinsDietFats
When a user clicks on any of these, WordPress loads the corresponding category archive page. If there is:No category-{slug}.phpNo category.php Then WordPress will use:archive.php
Author archivesauthor.php
Category archivesCategory.php

The hierarchy for Categories:

.1) category-{slug}.php e.g., category-news.php

2)category-{id}.php e.g., category7.php

3)Category.php
4) Archive.php
5) index.php
Date archivesdate.php
Tag Archivestag.php
Blog home1. If your homepage display is set to Static page as homepage + post page is set as homepage + post 

1)Home.php 
2) index.php 

2. If your homepage displays is set to “A static page”:Homepage (the page set as “Homepage”):

1) front-page.php → if it exists
2) else
page-{slug}.php or page-{id}.php
3) else page.php
4) else index.php
Home.php is used for the homepage if front-page.php and if your reading-settings are set to  latest posts 
Or if your reading settings are set to “A static page” + “posts page” 
Front Pagefront-page.phpfront-page.php is only used if a static homepage is selected. It is never used when “Your latest posts” is selected.It’s never used for normal pages that are not a static homepage. 
Pages For a normal page that is not set to static homepage: this is the hierarchy 
1)Page-{slug}.php
2) Page-{id}.php
3)Page.php
4)index.php

Template hierarchy: if a page is set to a static page + home page. This is the hierarchy

1)Front-page.php
2)page-{slug}.php
(e.g., page-home.php)
3) Page-{id}.php
4) page.php
5) Index.php

If a homepage is set to show your latest posts wordpress does not treat it as a page and this will be the hierarchy   
1) Home.php
2) index.php		Used for all wordpress pages.
If the Page is set as a static Homepage, then front-page.php gets top priority.
If it’s just a normal Page (not the homepage), front-page.php is ignored.
If the Page is set as a static Homepage but no front-page.php exists then the homepage is likely rendered by page.php 
 
Pages no titlepage.php
index.phpindex.phpIf no php files exist for all the other templates (page.php, home.php , archive.php etc) they all default to index.php and the wordpress post, page, archive page etc will all display content based on what index.php tells it to do. 
searchsearch.php
Single PostSingle.php


Single post hierarchy

1)  Single-post-{slug}.php e.g.,
single-post-how-to-code.php
(❗Rarely used — must be created manually)

2) Single-post.php Template for all single post entries (not pages or CPTs)

3) Single.php
General fallback for any single post or custom post type

4) Singular.php
General fallback for all singular content (posts, pages, CPTs)

5) index.php Final fallback		This is used for each of your posts. When you click a post it uses the Single posts template.
Single item: postSingle-post.php Single.php 
Page: 404404.php