The default PrestaShop install offers a neutral theme in shades of gray, enabling sellers to quickly and freely start their activity, whatever their business line.
More than 700 themes are available through the PrestaShop Addons marketplace. They were created either by the PrestaTeam or the PrestaShop community, and are sold at reasonable prices – some even free.
As a graphic designer/web developer, you too can put your themes up for sale on the PrestaShop Addons site, and earn 70% of the selling price.
Anyone with some knowledge of CSS and image manipulation can create a custom theme for PrestaShop. Provided you know PHP as well, you can build a whole new theme for your shop. Thanks to a tried and tested theme system, any shop can quickly sport a theme tailored to its needs.
That theme system is based on a template engine, called Smarty, which allows web-designers and developers to easily build their own theme, with little technical knowledge.
All web-designers and developers should use the following tools:
- Firefox: Firebug is a free extension for easy comparison and debugging between your CSS and the output.
- Firefox/Chrome: Web Developer adds many handy web developer tools to your browser.
- Safari/Chrome: enable the Web Inspector.
- Opera: Dragonfly, a fully-featured debugging environment.
- Internet Explorer 8+: Developer Tools are available through the Tools menu.
Internet Explorer users can also make use of Firebug lite.
Concepts and technical information
How a theme works
A PrestaShop theme is a set of files which you can edit in order to change the look of your online shop.
Here are a few important tidbits:
- All themes have their files located in the
- Each theme has its own sub-folder, in the main themes folder.
- Each theme is made of template files (
/tpl), image files (
.png), one or more CSS files (
- Each theme has a
preview.jpgimage file in its folder, enabling the shop-owner to see what the theme looks like directly from the back-office, and select the theme appropriately.
Here is an overview of the file structure of a PrestaShop theme (here, the default one):
/cssfolder contains all CSS files.
/imgfolder contains all images.
/langfolder contains the theme's translations. Its access rights should be set at CHMOD 666 (for instance), so that the back-office translation tool can read and write into it.
- The root of the folder contains TPL files only (Smarty files), as well as the
/js folder are optional, the module can perfectly work without them, it's up to you to create them.
All of your theme's text string should be enclosed in a Smarty function, like so:
This will enable anyone to translate the theme into his own language, using the internal translation tool, which you can find in the PrestaShop back-office, under the "Tools" tab and its "Translation" sub-tab. In the "Modify translations" section, use the drop-down menu, choose "Back Office translation", then click on the flag of the language you wish to translate strings into. All the back-office strings will then be displayed, and the strings for your theme are those whose sections are not prefixed with "Admin*".
Having data sent to a theme
PrestaShop uses a 3-tier architecture, in order to clearly separate concerns: it uses...
- a presentation tier: the user interface.
- an application tier: controls the data flow from and to the other two tiers. Also called "business tier".
- a data tier: the databases themselves.
Thanks to the
l() function, the
hello.tpl file can display text in the user's language of choice.
The PrestaShop file structure
The PrestaShop developers have done their best to clearly and intuitively separate the various parts of the software.
Here is how the files are organized:
/admin: contains all the PrestaShop files pertaining to the back-office. When accessing this folder with your folder, you will be ask to provided proper identification, for security reasons. Important: you should make sure to protect that folder with a
/cache: contains temporary folders that are generated and re-used in order to alleviate the server's load.
/classes: contains all the files pertaining to PrestaShop's object model. Each file represents (and contains) a PHP class, and its methods/properties.
/config: contains all of PrestaShop's configuration files. Unless asked to, you should never edit them, as they are directly handled by PrestaShop's installer and back-office.
/controllers: contains all the files pertaining to PrestaShop controllers – as in Model-View-Controller (or MVC), the software architecture used by PrestaShop. Each file controls a specific part of PrestaShop.
/css: contains all CSS files that are not attached to themes – hence, these are mostly used by the PrestaShop back-office.
/docs: contains some documentation. Note: it should be deleted in a production environment.
/download: contains your digital products, which can be downloaded: PDFs, MP3s, etc.
/img: contains all of PrestaShop's default images, icons and picture files – that, those that do not belong to the theme. This is were you can find the pictures for product categories (
/csub-folder, those for the products (
/psub-folder) and those for the back-office itself (
/install: contains all the files related to PrestaShop's installer. You will be required to deleted after installation, in order to increase security.
/localization: contains all of PrestaShop's localization files – that is, files that contain local information, such as currency, language, tax rules and tax rules groups, states and the various units in use in the chosen country (i.e., volume in liter, weight in kilograms, etc.).
/log: contains the log files generated by PrestaShop at various stages, for instance during the installation process.
/mails: contains all HTML and text files related to e-mails sent by PrestaShop. Each language has its specific folder, where you can manually edit their content if you wish.
/modules: contains all of PrestaShop's modules, each in its own folder. If you wish to definitely remove a module, first uninstall it from the back-office, then only can you delete its folder.
/override: this is a special that appeared with PrestaShop 1.4. By using PrestaShop's regular folder/filename convention, it is possible to create files that override PrestaShop's default classes or controllers. This enables you to change PrestaShop core behavior without touching to the original files, keeping them safe for the next update.
/themes: contains all the currently-installed themes, each in its own folder.
/tools: contains external tools that were integrated into PrestaShop. For instance, this were you'll find Smarty (template/theme engine), FPDF (PDF file generator), Swift (mail sender), PEAR XML Parser (PHP tool).
/translations: contains a sub-folder for each available language. However, if you wish to change the translation, you must do so using the PrestaShop internal tool, and not edit them directly in this folder.
/upload: contains the files that would be uploaded by clients for customizable products (for instance, a picture that a client wants printed on a mug).
/webservice: contains files that enable third-party applications to access PrestaShop through its API.
Customizing the default theme
Follow the following steps below to create your own theme out of the PrestaShop default theme.
1. Copy the default theme
- Locate the
../themesdirectory in your PrestaShop install, and create a copy of the default
- Rename the duplicate.
2. Modify the CSS sheet
- In the customized theme folder (e.g.,
../themes/MyStoreTheme/), locate the
- Open the
global.cssfile and change it according to your needs. This is where you are only limited by your creativity – and your knowledge of CSS.
maintenance.cssfile, located in the same folder, controls the layout of the Maintenance Mode page.
- New or modified images must be placed in the new theme's
Tips from the PrestaShop development team
- Where possible, use CSS instead of HTML (e.g., only use tables for tabular data, not for layout).
- Validate your XHTML and CSS code using the W3C tools: HTML validator, CSS validator.
- Reduce images and pictures size by using compression. Yahoo!'s SmushIt is an excellent tool for that.
- Test your theme on several Web browsers, not only Internet Explorer. Mozilla Firefox, WebKit browsers (Apple Safari, Google Chrome) and Opera are all to be considered, but you should most of all check that it works well the browsers your website is mostly visited with. If your website has not launched yet, have a look at your country browser stats. For instance, here are the browser stats for France, from 2010 to 2011.
- Keep filenames in lowercase.
- Remember that the homepage text and logo are modifiable directly via the Back Office. Go to the back-office, "Modules" tab then "Themes" sub-tab.
3. Create a preview screen shot
Once your customized theme is ready, you must place a file representing the theme, called
preview.jpg, in the theme's root folder (e.g.,
../themes/MyStoreTheme). This file must be a 100 × 100 pixels
4. Test your theme
- Go to back-office's "Preferences" tab, then its "Appearance" and its "Themes" section.
- Select the new theme and click Save..
Share your themes!
Show off your hard work, get feedback, and build your reputation by sharing your theme in the Themes section of our Forum!
You can also sell theme to PrestaShop users through our Addons website!
Creating your own theme
Integration: where the hooks and modules are
One of the key point of integrating content within a PrestaShop theme is to know where said content is displayed, and therefore where the various hooks and modules are located.
Here is a graphical representation of where they are, for each page. You will find:
- The name of the block.
- The block's id, in order to target it with CSS.
- The block's folder or template file, if you need to make changes to it.
Main content areas
Category central column
Account forms & order steps
Account creation form
Terms & Conditions and carrier choice
Payment module choice