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Featured Product FlexExt

Character Limit for Option Inputs & Textareas

Official Character Limit for Option Inputs & Textareas | FlexExt.dev

Product Code: FLX-CHAR-LIMIT-PRO • Availability: In Stock

Video Demo FlexExt Character Limit Pro (Products & Options) with Live Counter
Key Highlights & Features
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FlexExt Character Limit Pro (Products & Options) provides precise character count restrictions and live interactive counters for custom text inputs in OpenCart 4 and OpenCart 3. Ideal for personalized gifts, custom engravings, embroidery, greeting cards, and print-on-demand products, it prevents text overflow and production errors with real-time feedback and validation enforcement.

Character Limit Pro Showcase Banner

Prevent Costly Custom Printing & Engraving Errors

When customers enter engraving messages that exceed the physical space on jewelry, awards, or custom items, merchants waste time contacting buyers for revisions. FlexExt sets strict minimum and maximum character limits with dynamic color-changing live counters as buyers type.

Live Real-Time Counter

Interactive countdown badge (e.g., "18 / 25 characters remaining") updates instantly with every keystroke.

Min & Max Length Rules

Define both minimum required characters and hard maximum limits per text field and textarea option.

Visual Warning States

Badge transitions smoothly from neutral to warning (orange) and danger (red) as the maximum limit is approached.

Dual Validation Enforcement

Enforced both client-side via JavaScript and server-side in PHP to prevent bypass via developer tools.

Product & Option Overrides

Set global limits on the master Option, or override limits on individual products (e.g. Ring vs Necklace).

Theme Compatible

100% compatible with Journal 3 and standard OpenCart default themes with zero core file modifications.

Technical Specifications
Compatibility4.1.0.4, 4.1.0.3, 4.1.0.2, 4.1.0.1, 4.1.0.0, 4.0.2.3, 4.0.2.2, 4.0.2.1, 4.0.2.0, 4.0.1.1, 4.0.1.0, 4.0.0.0, 3.0.5.1, 3.0.5.0, 3.0.4.1, 3.0.4.0, 3.0.3.9, 3.0.3.8, 3.0.3.7, 3.0.3.6, 3.0.3.5, 3.0.3.3, 3.0.3.2, 3.0.3.1, 3.0.3.0, 3.0.2.0, 3.0.1.3, 3.0.1.2, 3.0.1.1, 3.0.1.0, 3.0.0.0
PHP VersionPHP 8.3, PHP 8.2, PHP 8.1, PHP 7.4
OpenCart 4 Installation
  1. Download flexext_char_limit_oc4.ocmod.zip.
  2. Go to OpenCart Admin > Extensions > Installer and upload the zip file.
  3. Go to Extensions > Extensions > Modules and locate FlexExt Character Limit Pro, then click Install.
  4. Click Edit, enter your Commercial License Key, configure limits, and click Save.
OpenCart 3 Installation
  1. Download flexext_char_limit_oc3.ocmod.zip.
  2. Go to OpenCart Admin > Extensions > Installer and upload the zip package.
  3. Go to Extensions > Modifications and click Refresh.
  4. Go to Extensions > Modules, install and configure FlexExt Character Limit Pro.
v1.0.0 Official Release
  • Initial official production release for OpenCart 4.x and OpenCart 3.x.
  • Maximum character length enforcer for product text and textarea options.
  • Real-time client-side character counter showing remaining characters dynamically.
  • Strict server-side validation preventing cart addition when limit is exceeded.

Yes, Character Limit for Option Inputs & Textareas with Live Counter is officially built with dual-engine architecture natively supporting OpenCart 4 (4.0.0.0 through 4.1.0.0+) and OpenCart 3 (3.0.0.0 through 3.0.3.9+). Separate, optimized packages are provided for each platform.

Absolutely. All FlexExt extensions undergo continuous regression testing against Journal 3, the default OpenCart theme, and major Bootstrap 5 and Bootstrap 3 storefront templates with zero layout interference.

The extension supports PHP 7.4, 8.0, 8.1, 8.2, and 8.3. The codebase is strictly typed and optimized for modern PHP JIT compilation and opcache performance.

Upon purchasing the extension on flexext.dev, you receive a unique Commercial License Key in your customer account. Simply paste this key into the module settings in your OpenCart admin to instantly unlock all features.

Not at all. Performance is our primary benchmark. The extension uses indexed database queries, lightweight vanilla JavaScript without heavy third-party dependencies, and zero Cumulative Layout Shift (Zero CLS).

Yes, licenses allow activation on local and staging development environments (such as localhost, *.test, *.local, or dev/staging subdomains) alongside your primary live production domain.

No. All modifications are strictly implemented via standard OCMOD XML (in OC3) or native Event Interceptors and Extension Controllers (in OC4). Your core OpenCart system files remain 100% untouched.

Yes, 100%. The frontend layout dynamically adapts to all viewports including smartphones (iOS / Android), tablets, and high-resolution 4K desktop screens with touch gesture support.

You can download updated .ocmod.zip packages directly from your flexext.dev customer portal. Upgrades preserve all previously saved settings and database records without data loss.

Uninstallation cleanly deregisters controllers and template injections. Your product catalog, orders, and customer databases remain completely intact and safe.

Yes, full multi-store support is built into the architecture. You can configure individual rules, settings, and behaviors per store instance from a single OpenCart administrative panel.

Yes, the extension does not harvest or transmit sensitive customer personal data to third-party tracking services without explicit administrator configuration.

Comprehensive step-by-step documentation is included in the package and on the product tab. If you encounter any edge cases, our technical engineering team provides dedicated assistance via flexext.dev.

No. All frontend outputs and routing respect standard OpenCart SEO keywords, canonical URLs, and are fully compatible with server-side caching modules such as Redis, Memcached, or Varnish.

We stand behind our software with a 100% functionality guarantee. If the extension does not work as advertised on a supported OpenCart installation and our support team cannot resolve it, you receive a full refund.