Jeffrey van Rossum: I build & ship my own products · vanrossum.dev    

       vanrossum.dev 

I build & ship my own products
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 ![](https://vanrossum.dev/images/jeffrey-portrait.webp) Jeffrey van Rossum

  vanrossum.dev  

  [      vanrossum.dev ](https://vanrossum.dev)                      

  ![Jeffrey van Rossum](https://vanrossum.dev/images/jeffrey-portrait-dark.webp) ![Jeffrey van Rossum](https://vanrossum.dev/images/jeffrey-portrait.webp) Hi, I'm Jeffrey van Rossum 👋
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I'm a product engineer from the Netherlands. I've been building things for the web since 2004.

I make SaaS apps and WordPress plugins, and I design, build, sell and support them myself. Most recently I launched [Datalumo](https://datalumo.app/) (search and AI chat over your own content). I also maintain a handful of open-source projects.

I take freelance work for the right projects. I'm based in the Netherlands and work remotely, also with international clients. I often travel in Asia, including Hong Kong. A lot of that work is WordPress, Laravel, APIs and AI. You can find me on [X](https://x.com/jeffreyrossum), [GitHub](https://github.com/jeffreyvr), [YouTube](https://www.youtube.com/@jeffrey.rossum) and [Instagram](https://www.instagram.com/jeffrey.rossum/), or reach me by [email](/contact).

 Products 

 [              Datalumo · Datalumo reads your website, docs and files, then answers your visitors' questions with AI.  SaaS ](https://datalumo.app/) [       Send to API for Gravity Forms · Forward Gravity Forms entries to virtually any REST API. Pick a method, authenticate, map your fields, and go.  €39 ](https://vanrossum.dev/products/gf-send-to-api) [         VoiceThisText.com · A SaaS for generating, hosting, and distributing text-to-speech audio across several TTS models.  SaaS ](https://voicethistext.com/) 

 Open-source [ GitHub github.com/jeffreyvr ](https://github.com/jeffreyvr) 

 [         TailPress  · WordPress starter theme with Tailwind CSS, Vite, and an installer.  1.5k ★ ](https://tailpress.io/) [         DropBlockEditor  · Livewire-powered block editor for Laravel apps.  122 ★ ](https://github.com/jeffreyvr/dropblockeditor) [               WP Settings  · Build settings pages for WordPress plugins without wrestling the Settings API.  89 ★ ](https://github.com/jeffreyvr/wp-settings) [         Paver Editor  · Drag-and-drop block editor built for PHP developers.  48 ★ ](https://pavereditor.com/) [          WP Meta Box  · Register custom meta boxes in WordPress plugins with less boilerplate.  6 ★ ](https://github.com/jeffreyvr/wp-meta-box) [        TailPress Installer  · Installer for TailPress.  4 ★ ](https://tailpress.io/) [       Easy Liveblogs  · Liveblogs for WordPress, cover live events with real-time, chronological updates.  4 ★ ](https://github.com/jeffreyvr/easy-liveblogs) [        WP Mail  · Send polished, responsive WordPress emails with a fluent API.  3 ★ ](https://github.com/jeffreyvr/wp-mail) [        TailPress Framework  · Framework for TailPress.  15.2k ↓ ](https://tailpress.io/) [       Contextr  · Analyze text with AI, spam, sentiment, moderation, with confidence scores.  50 ↓ ](https://github.com/jeffreyvr/contextr) 

 Writing [all posts](https://vanrossum.dev/posts) 

 [ 2026 How I use AI in my work 09/26 ](https://vanrossum.dev/posts/how-i-use-ai-in-my-work) [  Introducing Datalumo 08/26 ](https://vanrossum.dev/posts/introducing-datalumo) [  DocSigner: sign PDFs in your browser 07/26 ](https://vanrossum.dev/posts/docsigner-sign-pdfs-in-your-browser) [  I sold 143 licenses and never asked for feedback 07/26 ](https://vanrossum.dev/posts/i-sold-143-licenses-and-never-asked-for-feedback) [ 2025 Simplifying WordPress Emails with a Fluent API 07/25 ](https://vanrossum.dev/posts/simplifying-wordpress-emails-with-a-fluent-api) 

 [      ](https://vanrossum.dev/en/freelance-wordpress-developer "WordPress") [    ](https://vanrossum.dev/en/freelance-laravel-developer "Laravel")                

 Freelance? Yes, for the right projects. Based in the Netherlands, working with Dutch and international clients. I usually reply within a day. [more about freelance](https://vanrossum.dev/freelance) 

 [reach out →](https://vanrossum.dev/contact) 

 Whereabouts 

   © 2026 Jeffrey van Rossum 

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