Umbraco Forms Breaking Changes in v19, 5 new Umbraco AI providers released, H5YR.com updates and much more...

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UMB.FYI 2026-05-13

UMBRAAD

UMBRAAD

2026-05-21 from 10:20 to 18:00 (Europe/Copenhagen) - Online

[ #umbraad ]

UMBRAAD - Umbraco Accessibility Awareness Day

2026-05-21 from 09:00 to 17:00 ((UTC) Coordinated Universal Time) -

[ #accessibility ] [ #umbraad ]

Umbraco HQ

[Breaking change]: Remove the built-in Bootstrap 3 horizontal forms theme from Umbraco Forms (2 minute read)

Umbraco Forms 19 removes the bootstrap3-horizontal theme, which was incompatible with Bootstrap 4 and 5, as Bootstrap 3 reached end-of-life in July 2019. Developers are advised to create custom themes for their Bootstrap versions. The change reduces maintenance and avoids misleading developers regarding theme compatibility.

[ ] [ #theming ] [ #umbracoforms ]

[Breaking change]: Replace Pikaday with native HTML date input in the Umbraco Forms default theme (3 minute read)

In Umbraco Forms 19, the Date field type transitions from using Pikaday and Moment.js to a native <input type="date">, enhancing performance and simplifying model binding. This change eliminates hidden shadow fields and third-party dependencies, ensuring consistent ISO date formatting across browsers. Custom themes must be updated accordingly.

[ ] [ #umbracoforms ]

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[Breaking change]: Remove jQuery Validation support from Umbraco Forms client-side scripts (2 minute read)

Umbraco Forms 19 removes the jQuery Validation alternative, making aspnet-client-validation the sole supported client-side validation framework. The legacy umbracoforms-conditions.js is also deleted, simplifying maintenance and eliminating jQuery dependencies. Users must update their sites to restore @Html.RenderUmbracoFormDependencies(Url) and remove jQuery validation scripts.

[ ] [ #javascript ] [ #umbracoforms ]

Community

Carlini-style software vulnerability hunting, on a budget (20 minute read)

Nicholas Carlini discussed using Anthropic's Claude models for automated vulnerability discovery in software. Liam Laverty replicated this approach in the Umbraco-CMS repository using a heuristics-based method, achieving significant cost reduction—under $20 compared to Carlini's $40k—while identifying potential vulnerabilities and improving documentation, although no CVEs were found.

[ #ai ] [ #security ]

Designing an AI Agent skill for adding a page type to Umbraco (12 minute read)

Paul Seal discusses the development of AI skills for Umbraco, focusing on creating a skill to add page types. The team established naming conventions, document organization, and page categorization to streamline feature scaffolding. The goal is to automate feature addition while maintaining consistency, with plans for further enhancements and community collaboration.

[ ] [ #ai ]

Bootstrapping Umbraco ModelsBuilder on an empty site (3 minute read)

Sebastiaan Janssen outlines a solution for Umbraco developers facing a "chicken-and-egg" problem where strongly-typed views fail to compile due to missing models. By disabling Razor compile-on-build, switching ModelsBuilder to manual mode, and generating models in the backoffice, developers can successfully start the site and resolve the issue.

[ ] [ #modelsbuilder ]

AI Semantic Ranking with ExamineX and Azure Search (3 minute read)

SDKits announces AI Semantic Ranking support in ExamineX for Azure Search, enhancing search relevance by understanding query meanings. It employs deep learning models to re-rank results after an initial keyword search, providing useful outputs and extracted captions. Semantic ranking is included in ExamineX versions 6.2 and up, with Azure's Free tier offering 1,000 queries/month.

[ #ai ] [ #examinex ] [ #search ]

Events

Sydney Umbraco Meetup - Umbraco 18: What's Next - May 2026 - Hybrid Event

2026-05-14 from 18:00 to 20:00 (Australia/Sydney) - Webcoda, 501/80 Cooper Street, Surry Hills, Sydney, AU

Umbraco Virtual - AI Show & Share

2026-05-14 from 18:00 to 19:30 (Europe/Copenhagen) - Online

[ #ai ] [ #virtual ]

The London Umbraco Meetup - Umbraco & AI evening hackathon

2026-05-14 from 18:00 to 21:00 (Europe/London) - Novicell UK, 21-33 Great Eastern Street, London, GB

[ #ai ] [ #hackathons ]

Oslo Umbraco Meetup - Umbraco AI Hackathon: Building the Future of the Backoffice (Together)

2026-05-18 from 14:00 to 20:00 (Europe/Oslo) - Nova Consulting Group, Karl Johans gt. 16, Oslo, NO

[ #ai ] [ #hackathons ]

Umbraco Kent Meetup - Hybrid - Monday 18th May 2026 @ 7pm

2026-05-18 from 19:00 to 21:00 (Europe/London) - Dragon Coworking (Rochester), 7-8 New Road Avenue, Rochester, GB

[ #virtual ]

Umbraco US Meetup Group - Exploring Umbraco Compose

2026-05-19 from 13:00 to 14:00 (America/New_York) - Online

[ #virtual ]

Brisbane Umbraco Meetup

2026-05-20 from 18:00 to 20:00 (Australia/Brisbane) - Zeroseven, 340 Adelaide St, Brisbane City, AU

Umbraco India User Group - The Future of Search in Umbraco Starts Here

2026-05-20 from 16:00 to 17:00 (Asia/Kolkata) - Online

[ #search ] [ #virtual ]

Umbraco Community Hour - Virtual Meetup

2026-05-20 from 13:00 to 14:00 (Europe/Copenhagen) - Online

[ #virtual ]

umBristol Talks - May 2026

2026-05-20 from 18:00 to 21:00 (Europe/London) - Runway East Bristol Bridge, 1 Victoria Street, Bristol, GB

[ ]

Manchester and North West Umbraco Meetup - Matt Wise - Vibe Coder to AI Engineer

2026-05-21 from 18:00 to 20:00 (Europe/London) - CTI Digital, South Central, 11 Peter Street, Manchester, M2 5QR, Manchester, GB

[ #ai ]

Packages

Diplo Translator

Diplo Translator adds a Translate action to the Umbraco Dictionary tree using Umbraco AI.

[ #ai ] [ #translations ]

Umbraco.Community.AI.Chatbot

Drops a public-facing, AI-powered chat widget on a website's frontend.

[ #ai ] [ #search ]

Webwonders.Umbraco.BlockPicker

A block picker property editor for Umbraco.

[ #propertyeditors ]

Umbraco.Community.AiVisibility

Make your Umbraco site visible to AI search engines (ChatGPT, Claude, Perplexity, Gemini, Bing Copilot) and give editors visibility into who's reading the site.

[ #ai ] [ #search ]

Umbraco.AI.Mistral

Mistral provider for Umbraco AI

[ #ai ]

Umbraco.AI.TogetherAI

Together AI provider for Umbraco AI

[ #ai ]

Umbraco.AI.FireworksAI

Fireworks AI provider for Umbraco AI

[ #ai ]

Umbraco.AI.HuggingFace

Hugging Face Inference Providers integration for Umbraco AI

[ #ai ]

Umbraco.AI.DeepSeek

DeepSeek provider for Umbraco AI

[ #ai ]

Social

The new H5YR.com widget is now LIVE!

[ ]

H5YR.com is now on Umbraco 17

[ ] [ #umbracocms ]

H5YR embeddable widget details

Adam Shallcross AI based search package progress

[ ] [ #ai ] [ #search ]

Forum

God Mode v17 now available

Miscellaneous

May 2026 Cloud Release Notes

[ #infrastructure ]

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