Randomized Grid Tumblr Theme

I run a photo-only Tumblr that shows off my dog, and I’d like every visit to feel fresh. The main thing I need is a theme whose feed re-orders (shuffles) the photo posts each time the blog loads.

Right now I’m experimenting with the built-in “Curly” theme, but I’m completely open to other themes or even a lightweight custom build if that makes the randomising easier to maintain. The only style requirements I’m firm on are:

• a clean grid layout with large, border-free images
• no clutter—titles, captions and notes can appear on hover or below, whichever is simpler

Navigation can be infinite scroll or classic pagination; whichever approach you find most reliable for keeping the shuffle effect snappy.

What I’ll need from you
• an edited or brand-new Tumblr theme (HTML/CSS/JavaScript) that randomises the order of posts on every load
• installation instructions I can follow, plus a quick run-through of any settings I should know about for future tweaks
• a brief note on any limitations (e.g. maximum posts per page, potential impact on load time) so I can plan around them

If there’s a cleaner way to achieve this—such as calling the Tumblr API directly inside the theme or leveraging an existing shuffling script—feel free to propose it. I’m comfortable giving you temporary dashboard access or installing code snippets myself, whichever you prefer.

Thanks for helping me make this little dog blog extra fun!