Increase the long product description and image ALT text limit in PrestaShop 8/9

PP-M034S
SEO & Optimization
  • 8.x | 9.x
  • EN, FR, IT, DE, PL
  • 1.2.1
  • 2026-04-22

PP Limit Manager removes the length restriction applied to the long product description and product image ALT text in the new PrestaShop 8 and 9 product form. The module allows you to enter substantially longer content without the risk of it being truncated during form validation.

Administrators get safe configuration, full Multistore support and no core modifications. Developers get predictable behaviour based on a form hook together with limit control aligned with the actual column type in the database.

PP Limit Manager for PrestaShop 8/9 | Description & ALT
PP Limit Manager for PrestaShop 8/9 | Description & ALT
PP Limit Manager for PrestaShop 8/9 | Description & ALT
PP Limit Manager for PrestaShop 8/9 | Description & ALT
26.70 € Tax excluded

Additional services:

Installation +29.10 €

Information Parameters:

  • 1.2.1
  • Store Version PHP Version
    8.x 8.1 – 8.3
    9.x 8.1 – 8.5
  • 2026-04-22
  • EN, FR, IT, DE, PL
  • ✅
  • ✅
  • ✅
  • ❌

What the module actually solves

  • It removes the default limit for the long product description in the modern product form, which can block extended HTML content.
  • It increases the practical limit for product image ALT text, which in standard PrestaShop is tied to the image_lang.legend field and the Image model validation.
  • It combines both settings in one place, so the marketing team, SEO team and store administrator can work from one consistent Product panel.

Key benefits

  • One Product configuration: the long description and image ALT text are managed from one shared Product limits form.
  • No changes to the PrestaShop core: the module works through hooks, runtime configuration and controlled storage operations only where they are genuinely needed.
  • Full Multistore compatibility: settings can be saved per shop, shop group or globally.
  • Higher-quality product content: the shop can publish richer descriptions, fuller specifications and more descriptive image ALT text.
  • An architecture ready for growth: the module name and design do not lock it into one field, but create a base for future limit categories.

Module feature scope

1. Product long description

The module increases the validation limit for the long product description in the Back Office, so editing extended descriptions no longer ends with the form being blocked.

  • Support for very extensive HTML content, such as tables, FAQs, instructions, expert sections and expanded SEO descriptions.
  • Respect for the actual storage capacity, because the module analyses the product_lang.description column type and does not exceed the safe range.
  • No core interference, because the logic is based on the product form hook instead of manual system changes.

2. Product image ALT text (legend)

The module extends the capabilities of the product image ALT field, which in PrestaShop is stored as legend in the image_lang table.

  • Configurable ALT text limit from the module panel, with no manual database work.
  • Synchronised validation and storage, so the form and data saving remain consistent.
  • Controlled expansion of the image_lang.legend column when the current storage capacity is too small for the configured limit.

Back Office features

1. Consolidated Product form

Instead of several scattered sections, the administrator gets one clear Product limits configuration.

  • Shared settings save for the long description and image ALT text.
  • Faster administration without switching between separate forms.
  • Lower risk of mistakes when rolling out settings across different shops.

2. Multistore compatibility

The module saves configuration while respecting the active administrative context.

  • Separate settings for a single shop, a group or the whole network.
  • Consistent limit reading during product editing.
  • Practical implementation for installations with different content requirements.

3. Safe technical logic

The solution combines form validation with detection of the actual database capabilities.

  • Checks the product_lang.description column type for the long description.
  • Checks the type and capacity of image_lang.legend for image ALT text.
  • No core overrides and more predictable shop updates.

4. Help tab with ppupdater

The module includes a separate Help tab, which organises access to the update component and supporting materials.

  • Easier module maintenance without searching for information outside its configuration.
  • Consistent administrative interface based on category tabs.
  • A better base for further development of future categories and overrides.

Which shops benefit most from this module

PP Limit Manager is particularly useful wherever the product page is an important sales and knowledge asset: technical, B2B, industrial, construction, beauty, premium, home decor, automotive, medical shops, and anywhere a product needs a detailed description and precise information alongside images.

It is also a good fit for multilingual shops and SEO or content teams working with long descriptions, tables, FAQ sections, user instructions and broader materials that support conversion.

Impact on SEO, UX and team workflow

A fuller product description helps cover more buying and informational intent, while more descriptive image ALT text supports content structure, accessibility and additional semantic context for the product page.

From the team perspective, this means fewer blocks at the form level, fewer requests sent to a developer and smoother content deployment without manual workarounds. From the business perspective, it simply means more room for sales arguments, technical data and SEO content where the customer genuinely needs it.

Important implementation information

Note: the module does not modify PrestaShop core files, but for image ALT text settings it may perform a controlled change to the image_lang.legend column if the current storage capacity is too small. This means the database user should have permission to execute ALTER TABLE.

For installations upgraded from an older module version, an upgrade to version 1.2.0 or a reinstall is recommended to activate the new hooks and full support for the product image ALT text limit. After saving the configuration, it is worth clearing the PrestaShop cache and checking product saving again in the appropriate Multistore context.

Download:

PrestaShop module installation (625.83KB)

Universal documentation describing the module installation process for PrestaShop.

Instrukcja produktu (97.32KB) 

## [1.2.1] - 2026-04-22

### Added

- Support for managing the product image ALT text limit from the module configuration.
- Back Office integration for product image form validation and UI feedback aligned with the configured ALT text limit.

### Changed

- Extended the runtime limit handling to cover product image ALT text based on the real `image_lang.legend` storage capacity.
- Added the hooks and update path required to activate the new product image ALT text solution in product editing.

## [1.0.0] - 2026-02-17

### Added

- Initial release of the module.

FAQs

  • Which limits does PP Limit Manager increase?

    The module increases the product long-description limit and the practical limit of the image ALT field stored as image_lang.legend.

  • Are the modules compatible with my version of PrestaShop?

    Each module in our store contains information about compatibility with specific PrestaShop versions. Please check this information carefully before purchasing. If you are not sure, contact us.

  • Does the module modify PrestaShop core files?

    No. It works through hooks, runtime configuration, and controlled storage operations, without manual core modifications.

  • Do the settings work in multistore?

    Yes. Depending on the active context, configuration can be saved for an individual store, a group of stores, or globally.

  • Can a long description contain extensive HTML?

    Yes. The solution supports rich content such as tables, instructions, FAQ sections, and detailed SEO descriptions, within the capacity of the database column.

  • Can increasing the ALT limit require database permissions?

    Yes. If the current image_lang.legend column capacity is too small, the module can make a controlled column change that requires ALTER TABLE permission.

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