PHPackages markocupic/contao-altcha-antispam - PHPackages - PHPackages [Skip to content](#main-content)[PHPackages](/)[Directory](/)[Categories](/categories)[Trending](/trending)[Leaderboard](/leaderboard)[Changelog](/changelog)[Analyze](/analyze)[Collections](/collections)[Log in](/login)[Sign up](/register) 1. [Directory](/) 2. / 3. [Utility & Helpers](/categories/utility) 4. / 5. markocupic/contao-altcha-antispam ActiveContao-bundle[Utility & Helpers](/categories/utility) markocupic/contao-altcha-antispam ================================= ALTCHA antispam form widget for Contao CMS 0.7.0(4mo ago)56.0k—0%2[2 issues](https://github.com/markocupic/contao-altcha-antispam/issues)GPL-3.0-or-laterPHPPHP ^8.1CI passing Since Feb 11Pushed 4mo ago1 watchersCompare [ Source](https://github.com/markocupic/contao-altcha-antispam)[ Packagist](https://packagist.org/packages/markocupic/contao-altcha-antispam)[ RSS](/packages/markocupic-contao-altcha-antispam/feed)WikiDiscussions main Synced 1mo ago READMEChangelogDependencies (15)Versions (38)Used By (0) [![logo](docs/logo.png)](docs/logo.png) Contao Altcha Antispam ====================== [](#contao-altcha-antispam) This is a [**Contao CMS**](https://contao.org) implementation of [**Altcha**](https://altcha.org/). The extension provides a **front end** **form field** for the **Contao form generator**. [![frontend](docs/frontend_1.png)](docs/frontend_1.png)[![frontend](docs/frontend_2.png)](docs/frontend_2.png)[![frontend](docs/frontend_3.png)](docs/frontend_3.png)**ALTCHA** uses a proof-of-work (POW) mechanism to protect your forms from spam and abuse. Unlike other solutions, **ALTCHA** is **self-hosted**, does not use cookies nor fingerprinting, does not track users, and is **fully compliant** with **GDPR**. [Visit https://altcha.org](https://altcha.org) Installation ------------ [](#installation) You can install the package via composer: ``` composer require markocupic/contao-altcha-antispam ``` Afterwards run the database migration task: ``` php vendor/bin/contao-console contao:migrate ``` Configuration and usage ----------------------- [](#configuration-and-usage) The extension runs out of the box and no further configuration is required. Nevertheless, some parameters can be configured. The **[Complexity](https://altcha.org/docs/v2/complexity/)** can be adjusted by modifying the minimum and maximum values of the randomly generated secret number on the server side (`markocupic_contao_altcha_antispam.range_min` and `markocupic_contao_altcha_antispam.range_max`). A lower maximum value creates a less complex challenge, requiring fewer computational iterations for the client to find a matching solution. Conversely, a higher maximum value increases the complexity, demanding more computational resources and time from the client. Run composer install in your terminal to clear and rebuild cache if you made changes to the `config.yaml` file. ``` # config/config.yaml markocupic_contao_altcha_antispam: algorithm: 'SHA-256' # optional, default is SHA-256 range_min: 290000 # Lower limit for the complexity (optional), default is 10000 range_max: 300000 # Upper limit for the complexity (optional), default is 100000 challenge_expiry: 3600 # optional, default is 3600 ``` keydefault valueinfoRequired`algorithm``SHA-256`Choose between `SHA-256`, `SHA-512` or `SHA-384`no`range_min``10000`**Complexity:** Choose a higher value to increase the complexity/duration. A minimum value of the random number of at least several thousand as a "minimum required complexity" is recomended. [More](https://altcha.org/docs/v2/complexity/)no`range_max``100000`**Complexity:** Choose a higher value to increase the complexity/duration. The maximum value of 100,000 is a good start for most systems. [More](https://altcha.org/docs/v2/complexity/)no`challenge_expiry``3600`Choose an expiration time, so that there is not an infinite amount of time to solve the challenge.noEndpoint (route) ---------------- [](#endpoint-route) Out of the box, the extension will use the `/_contao_altcha_challenge` endpoint to get the challenges. ### Health Score 43 — FairBetter than 91% of packages Maintenance66 Regular maintenance activity Popularity30 Limited adoption so far Community12 Small or concentrated contributor base Maturity52 Maturing project, gaining track record Bus Factor1 Top contributor holds 92.4% of commits — single point of failure How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~19 days Recently: every ~5 days Total 37 Last Release 141d ago PHP version history (2 changes)0.1.0PHP ^8.1 0.1.2PHP ^8.2 ### Community Maintainers ![](https://avatars.githubusercontent.com/u/1525166?v=4)[Marko Cupic](/maintainers/markocupic)[@markocupic](https://github.com/markocupic) --- Top Contributors [![markocupic](https://avatars.githubusercontent.com/u/1525166?v=4)](https://github.com/markocupic "markocupic (73 commits)")[![fritzmg](https://avatars.githubusercontent.com/u/4970961?v=4)](https://github.com/fritzmg "fritzmg (5 commits)")[![rabauss](https://avatars.githubusercontent.com/u/14016098?v=4)](https://github.com/rabauss "rabauss (1 commits)") --- Tags contaoantispamALTCHAform field widget ### Code Quality TestsPHPUnit ### Embed Badge ![Health badge](/badges/markocupic-contao-altcha-antispam/health.svg) ``` [![Health](https://phpackages.com/badges/markocupic-contao-altcha-antispam/health.svg)](https://phpackages.com/packages/markocupic-contao-altcha-antispam) ``` ### Alternatives [sylius/sylius E-Commerce platform for PHP, based on Symfony framework. 8.4k5.6M651](/packages/sylius-sylius)[shopware/platform The Shopware e-commerce core 3.3k1.5M3](/packages/shopware-platform)[sulu/sulu Core framework that implements the functionality of the Sulu content management system 1.3k1.3M152](/packages/sulu-sulu)[codefog/contao-haste haste extension for Contao Open Source CMS 42650.8k139](/packages/codefog-contao-haste)[codefog/contao-news_categories News Categories bundle for Contao Open Source CMS 3183.3k6](/packages/codefog-contao-news-categories)[contao/core-bundle Contao Open Source CMS 1231.6M2.4k](/packages/contao-core-bundle) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)