This month brings a few new features to Svelte and SvelteKit and quite a few new libraries from around the community.

Also, in case you missed it last month, the Svelte maintainers released patches for 5 vulnerabilities across the Svelte ecosystem. So be sure you’re up to date by reading the blog post, CVEs affecting the Svelte ecosystem (https://svelte.dev/blog/cves-affecting-the-svelte-ecosystem).

Now, without further ado, let’s dive in…

What’s new in Svelte & SvelteKit (#What’s-new-in-Svelte-SvelteKit)

• To support newer browsers that allow it, you can now customize elements using CSS and rich HTML content (svelte@5.47.0, Docs (https://developer.chrome.com/blog/a-customizable-select), #17429 (https://github.com/sveltejs/svelte/pull/17429))

• Svelte’s CSS parser is now exported from svelte/compiler as parseCss. It’s a partial but lightweight CSS AST parser that is currently being used in SvelteKit (svelte@5.48.0, #17496 (https://github.com/sveltejs/svelte/pull/17496))

• A ShadowRootInit object can now be passed to attachShadow() when shadow root is created with a customElement (svelte@5.49.0, Docs (https://svelte.dev/docs/svelte/custom-elements#Component-options), #17088 (https://github.com/sveltejs/svelte/pull/17088))

• A breaking change in SvelteKit’s remote functions removes buttonProps from experimental remote form functions. Use <button {…myForm.fields.action.as(‘submit’, ‘register’)}>Register when creating mutliple submit buttons instead (kit@2.50.0, Docs (https://svelte.dev/docs/kit/remote-functions#form-Multiple-submit-buttons), #15144 (https://github.com/sveltejs/kit/pull/15144))

• Node: The server’s keepAliveTimeout and headersTimeout options can now be configured by setting the corresponding environment variable (sveltejs/adapter-node@5.5.0, Docs (https://svelte.dev/docs/kit/adapter-node#Environment-variables-KEEP_ALIVE_TIMEOUT-and-HEADERS_TIMEOUT), #15125 (https://github.com/sveltejs/kit/pull/15125))

• Vercel: Remote function calls can now be found under the /_app/remote route in observability (sveltejs/adapter-vercel@6.3.1, #15098 (https://github.com/sveltejs/kit/pull/15098))

For a full list of changes - including all the important bugfixes that went into the releases this month - check out the Svelte compiler’s CHANGELOG (https://github.com/sveltejs/svelte/blob/main/packages/svelte/CHANGELOG.md) and the SvelteKit / Adapter CHANGELOGs (https://github.com/sveltejs/kit/tree/main/packages).

Community Showcase (#Community-Showcase)Apps & Sites built with Svelte (#Community-Showcase-Apps-Sites-built-with-Svelte)

• Frame (https://getframe.vercel.app/) is a high-performance media conversion utility built on the Tauri v2 framework. It provides a native interface for FFmpeg operations, allowing for granular control over video and audio transcoding parameters

• LogTide (https://logtide.dev/) is an open-source alternative to Datadog, Splunk, and ELK. Designed for developers and European SMBs who need GDPR compliance, data ownership, and simplicity without the complexity of managing an ElasticSearch cluster

• funcalling (https://www.funcalling.com/) is a P2P calling app with built in board games, word games, and motion capture games (Reddit post (https://www.reddit.com/r/sveltejs/comments/1qgrq2c/i_built_a_p2p_calling_app_with_built_in_board/) includes a video demo)

• book by book (https://bookbybook.app/) lets you sync book data, covers, and pricing to a Square POS in seconds. You can import distributor orders from Ingram, Edelweiss & PubEasy—no spreadsheets or manual entry

• zsweep (https://zsweep.com/) is a minimalist, keyboard-driven Minesweeper game played with Vim motions

• PulseKit (https://trypulsekit.com/) provides professional feedback management to collect and prioritize customer feedback

• Bitphase (https://bitphase.app/) is a modern web-based chiptune tracker designed for creating music on retro sound chips

• CapCheck (https://capcheck.ai/) is a fact checker AI for images, videos, audio, text and URLs

• Distill (https://www.distillintelligence.com/competitor-finder) (last mentioned in July) has been updated with a new competitor finder to make it easier to track direct and indirect competitors in a market

• Pelican (https://pelican.alexey.work/) lets you generate SVG vector graphics and ASCII art from text prompts. With multi-step refinement, AI sees its output and improves it iteratively

Learning Resources (#Community-Showcase-Learning-Resources)This Week in Svelte

• Ep. 127 (https://www.youtube.com/watch?v=eTchw_QU3aQ) — Changelog

• Ep. 128 (https://www.youtube.com/watch?v=58Ol4FbMjz4) — Changelog

To Read

• Bundling a SvelteKit app into a single binary (https://gautier.dev/articles/sveltekit-sea) by Gautier Ben Aïm

Libraries, Tools & Components (#Community-Showcase-Libraries-Tools-Components)UI Components and Animations

• mapcn-svelte (https://github.com/MariusLang/mapcn-svelte) is a Svelte port of mapcn built on MapLibre GL, styled with Tailwind, works seamlessly with shadcn-svelte

• AgnosticUI Local (v2) (https://github.com/AgnosticUI/agnosticui) is a CLI-based UI component library that copies Lit web components directly into your project

• Motion Core (https://github.com/motion-core/motion-core) is a collection of animated Svelte components powered by GSAP and Three.js

• Tilt Svelte (https://github.com/Savy011/tilt-svelte) is a smooth 3D tilt Svelte attachment based on vanilla-tilt.js

State Management

• Reddo.js (https://github.com/eihabkhan/reddojs) is a tiny undo/redo utility package for JavaScript, React, Vue, and Svelte

• svstate (https://github.com/BCsabaEngine/svstate) provides deep reactive proxy with validation, snapshot/undo, and side effects — built for complex, real-world applications

• rune-sync (https://github.com/antepodeum/rune-sync) synchronizes reactive state across various storage backends

Plugins, Compilers and Runtimes

• fastify-svelte-view (https://github.com/matths/fastify-svelte-view) is a Fastify plugin for rendering Svelte components with support for SSR (Server-Side Rendering), CSR (Client-Side Rendering), and SSR with hydration

• kit-on-lambda (https://github.com/beesolve/kit-on-lambda) is an adapter for running SvelteKit on AWS Lambda. It supports deployment to Node.js and Bun runtimes bundled with esbuild/Bun

• voca (https://github.com/treyorr/voca) is a self-hostable, stateless, and fast WebRTC signaling server written in Rust with frontend SDKs

• @svelte-safe-html/core (https://github.com/patel-vansh/svelte-safe-html-core) statically analyzes .svelte files and detects unsafe {@html} insertions

• sveltekit-discriminated-fields (https://www.npmjs.com/package/sveltekit-discriminated-fields) provides type-safe discriminated union support for SvelteKit remote function form fields

• svelte-fast-check (https://github.com/astralhpi/svelte-fast-check) is a type and Svelte compiler warning checker for Svelte/SvelteKit projects that claims to be up to 24x faster than the built-in svelte-check

That’s it for this month! Let us know if we missed anything on Reddit (https://www.reddit.com/r/sveltejs/) or Discord (https://discord.gg/svelte).

Until next time 👋🏼!

• Reference: https://svelte.dev/blog/whats-new-in-svelte-february-2026

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