SvelteKit arguably has a more sophisticated and flexible system for handling env vars than any other framework. We think we can do better though. Here's what we're working on: github.com/sveltejs/kit... Give it a read and let us know if you have feedback

If you think em dashes are the only sign you've just opened an unsupervised slop PR that has no soul I've got news for you

the single biggest criticism svelte has received over the years is 'you can't have multiple components in a file'. so we fixed it! by making them unnecessary. with declaration tags (svelte.dev/docs/svelte/...), snippets/each blocks/etc can have their own state: svelte.dev/playground/a...

Aaaand he's in - welcome to Svelte Ambassadors!

Maybe I’ll start re-posting this every other day or so. I know everyone is busy. But it’s our ecosystem. Either we take care of our communal garden or we don’t. sveltesociety.dev

prettier-plugin-svelte 4 is out! This is mostly a maintenance release: - Svelte 5 now required (using the modern AST now) - removed deprecated/obsolete formatting options - now with OIDC-based publishing

Had a few thoughts I needed to get out of my head this morning. www.jasnell.me/posts/open-s...

We've just published patch releases of devalue, Svelte, and SvelteKit that fix a number of vulnerabilities. No need to panic — they're all hard to exploit or reliant on experimental features — but we recommend updating as soon as you get a chance. More details in the advisories:

Yes! @svelte.dev goes from 🔴 -> 💚 on the Oxfmt side 🔥 You can now format your Svelte components with Oxfmt too. See oxc.rs/docs/guide/u... for more details

most of these github actions driven breaches are because of pull_request_target. here's some tips of what to look for when reviewing your own workflows. worth noting - it is safe, and necessary, when used correctly 🧵

I'm getting hyped on Svelte again. Not-too-practical-but-fun-example: synced bad apple Using `query.live` from SvelteKit's remote functions, super easy to do. Demo: sve.thomas.rocks/examples/bad...

If you want to see it in action see: sveltekit-query-live.ss10.dev

@svelte.dev is finally on Adopt Ring within Technology Radar www.thoughtworks.com/radar/langua..., so go and adapt!

about to fly to london for @cityjsconf.bsky.social. you should come! unless you don't write javascript for a living in which case you probably shouldn't anyway here's a 20% off link ti.to/cityjsconf-l...

First peek at Svelte 5 + NativeScript 🚀 Big thanks to @paolo.ricciuti.me, @svelte.dev, @syntax.fm and @mainmatter.com

not an april fools joke: svelte is no longer just a web framework (or rather, won't be once we merge @paolo.ricciuti.me's magnum opus). have seen some extremely cool demos of this

📊 Massive LayerChart update (6 months in the making…) Data-driven primitives, overhauled state (transform, brush, series, tooltip), 10+ new components (image, statistical, spatial), canvas improvements, chart export (png, svg), new docs, and so much more! next.layerchart.com/docs/guides/...

Our final beta for the Svelte integration is out. We made some breaking changes to the API to make it feel a little more idiomatic to Svelte, so please take a look and let us know if we got it right! beta.tinybase.org/guides/relea...

In an age of LLMs and streaming text, we need to stop trying to get markdown to play ball and restrict the syntax. I specced a stricter markdown sub(er)set several years ago and wondered if it was strict enough to support true streaming. Turns out penguin flavoured markdown was ahead of its time.

Want!!!!!

Svelte Chicago is back! Join us on March 24th at the M1 Finance office to hear Robert Ismo's talk: Web Serialization and SvelteKit. As always, fellow co-organizer @kenthropic.com will be there to find a way to throw shade at React. #Svelte #ChicagoTech guild.host/events/svelt...

It's been awhile since we talked @svelte.dev on the podcast! Join us with @paolo.ricciuti.me where we talk about some of the cool stuff they've been up to www.youtube.com/watch?v=2r25... open.spotify.com/episode/6dhV...

Great way to stay up to date on all things Svelte

Svelte is now officially a plugin in the Cursor marketplace! Just install the plugin to get: MCP, skills, custom instruction files, the file editor subagent! cursor.com/marketplace/...

Hey friends 👋 🎉 New *sv* version is out 🎉 We tuned the CLI help so: → humans get clearer commands & structure → AI can one-shot project scaffolding with your fav' add-ons 🤖 This was surprisingly fun to test 😄 Give it a try and tell us how it goes!

I made a p5.js wrapper for Svelte you can install with `npm i @‎sveltecraft/p5-svelte` or watch the video where I explain how it's used and making old libraries work in Svelte youtu.be/97bD9ZHwv2U

Modern CSS is just so awesome...all of this with view transitions! svelte.dev/playground/e...

Just merged a relatively significant set of changes to remote functions, especially `query`. It's fairly likely your next upgrade will break your app if you're doing anything decently advanced, but the errors should be pretty helpful/descriptive.

Just released svelte-spa-router version 5, one of the bigger libraries that was still stuck on Svelte 4. If that was your reason to not upgrade to Svelte 5, you can now. What other libraries are blocking you from upgrading to Svelte 5?

Rich and I just worked a combined 3 hours on a tricky bug. AI quickly found out where it breaks and proposed a fix. But it was the wrong fix - we took the time to find out what was the underlying reason and fixed that instead. Always think through what AI proposes to you.

I'll make an appearance on This Week in Svelte, talking a bit about Convex and Svelte. See you there: www.youtube.com/watch?v=hHV7...

This was fun! We talked about - Svelte's new async features - SvelteKit remote functions - How to get the best out of Svelte+AI (Elliott created a crazy potato canon website) ... and just had an all around great time with the community!

A lot of people have asked us "ok, I know the basics, but how do I write good, idiomatic Svelte code"? This best practices document gives you the answer. And if you're using AI, it's also installable as a skill. Good your you, good for your agents.

The Vercel Svelte gang is live tomorrow - come say hi!

myth: LLM-assisted coding means everyone is forced to use The Popular Framework forever reality: agents will happily migrate your entire app to The Good Framework inertia is a powerful drug but we are entering a world without moats, plan accordingly strawberrybrowser.com/blog/react-t...

Rickrolled by Claude

📣 Just Scheduled Could Svelte power terminal and native apps? OSS maintainers working on the customer renderers API are aiming to make multi-platform Svelte a reality. @paolo.ricciuti.me talks through what it takes to make this ambitious API, a reality. Details: www.youtube.com/watch?v=nPac...

Who here is on Svelte 4 yet? Curious to hear what is stopping you from upgrading to Svelte 5, and if we can make things any easier here.

SvelteKit 2 now fully supports Vite 8 SvelteKit 3 will require it - giving additional optimizations and functionality. E.g. SvelteKit 3 will use @rolldown.rs hook filters to spend more compilation time in rust and less in JavaScript. And SvelteKit 3 adapters use only rolldown without esbuild

LET'S GO SVELTE

Almost 3 years since editable.website won 2nd place at @sveltesociety.dev SvelteHack. Since then, I’ve been busy turning this from a prototype into something solid. A way to build CMS-free, in-place editable websites using only Svelte. This is v2. 🥳

What makes Svelte the right choice for modern frontend projects? And when is it not? In this blog post, @paolo.ricciuti.me breaks down the advantages and limitations of Svelte, and what that means for your next product decision. Read the post 👉 mainmatter.com/blog/2026/02... #svelte #sveltekit

Sometimes people ask me why I picked svelte...I put my thoughts in words here and no, it's not just a technical thing. This is my love letter to svelte 🧡

New in Svelte: Comments inside component/element tags!

New LayerChart docs 🎉 next.layerchart.com Massive overhaul including over 700 isolated examples with browsing / cross referencing / StackBlitz editing, AI friendly (llms.txt), component API docs, guides, improved search, showcase, improved design, and more! Details👇

Yesterday we introduced our new @svelte.dev starter kit, today we're bringing our stream package on board: npm i @laravel/stream-svelte Easiest way to consume streamed responses from your backend in your Laravel + Svelte app, hands down www.npmjs.com/package/@lar...

We just released a number of security patches across the Svelte ecosystem. If you use SvelteKit, the Vercel adapter for SvelteKit, Svelte, or devalue, you should upgrade. The Vercel OSS Bug Bounty paid out over $14,000 for these reports!

php is cool now

Welcome to the party, @svelte.dev New starter kit just dropped: Laravel + Svelte + Inertia

🌾 Rich Harris (@rich-harris.dev), creator of Svelte, joins @podrocket.bsky.social to unpack Fine Grained Everything and what comes after React Server Components: why better primitives beat micro-optimizations and what this means for frontend architecture: youtu.be/isp32w1uJ3k?...