Comparison

Stencil vs Svelte

On the evidence we track, Svelte leads this comparison with a composite score of 78/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Stencil full profile →Svelte full profile →

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Stencil61

★Svelte78

Attribute comparison across 2 tools
Attribute	Stencil	SvelteLeader
Vioscale score	61 / 100medium · 71%	78 / 100medium · 71%
Pricing
Free tierpricing.free_tier	-	✓
Modelpricing.model	commercial	open_source
Price levelpricing.price_level	-	free
Security
Disclosure policysecurity.disclosure_policy	-	✓
Scorecardsecurity.scorecard	6.1	7.9
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=sam77-test-stencil-component&per_page=100 · Last 12m: 0	Count: 14 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=svelte&per_page=100 · Last 12m: 12 · Max severity: HIGH
Adoption
Dependent reposadoption.dependent_repos	1	56,439
Github starsadoption.github_stars	13,126	87,991
Package downloads weeklyadoption.package_downloads_weekly	1,375,018	5,781,541
Stackoverflow questionsadoption.stackoverflow_questions	-	9,000
Activity
Commits last 30dactivity.commits_last_30d	37	87
Release
Cadence daysrelease.cadence_days	9	3
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	MIT	MIT
Language
Primarylanguage.primary	TypeScript	JavaScript
Market
Availabilitymarket.availability	-	Available worldwide
Content
Faqcontent.faq	-	8 items

Score

Vioscale score

Stencil61 / 100medium · 71%

Svelte78 / 100medium · 71%

Pricing

Free tier

Stencil–

Svelte✓

Model

Stencilcommercial

Svelteopen_source

Price level

Stencil–

Sveltefree

Security

Disclosure policy

Stencil–

Svelte✓

Scorecard

Stencil6.1

Svelte7.9

Vulnerabilities

StencilCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=sam77-test-stencil-component&per_page=100 · Last 12m: 0

SvelteCount: 14 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=svelte&per_page=100 · Last 12m: 12 · Max severity: HIGH

Adoption

Dependent repos

Stencil1

Svelte56,439

Github stars

Stencil13,126

Svelte87,991

Package downloads weekly

Stencil1,375,018

Svelte5,781,541

Stackoverflow questions

Stencil–

Svelte9,000

Activity

Commits last 30d

Stencil37

Svelte87

Release

Cadence days

Stencil9

Svelte3

History

Stencil20 items

Svelte20 items

License

Spdx

StencilMIT

SvelteMIT

Language

Primary

StencilTypeScript

SvelteJavaScript

Market

Availability

Stencil–

SvelteAvailable worldwide

Content

Faq

Stencil–

Svelte8 items

Capabilities

Feature-by-feature on the axes that matter for frontend ui frameworks. “-” means undocumented, not absent.

Capability comparison for Frontend UI Frameworks
Capability	Stencil	Svelte
Core
Paradigm	Web component compiler	compiler-based component framework
Reusable component model	✓	✓
Rendering
Virtual DOM	✓	✗
Signals / fine-grained reactivity	-	✓
SSR support	-	✓
DX
First-class TypeScript	✓	✗
State
Built-in state management	-	✓
Ecosystem
Official router	-	-
Performance
Runtime size	Tiny (<10kb)	Small (10–40kb)

Core

Paradigm

StencilWeb component compiler

Sveltecompiler-based component framework

Reusable component model

Stencil✓

Svelte✓

Rendering

Virtual DOM

Stencil✓

Svelte✗

Signals / fine-grained reactivity

Stencil-

Svelte✓

SSR support

Stencil-

Svelte✓

First-class TypeScript

Stencil✓

Svelte✗

State

Built-in state management

Stencil-

Svelte✓

Ecosystem

Official router

Stencil-

Svelte-

Performance

Runtime size

StencilTiny (<10kb)

SvelteSmall (10–40kb)

What each one is

The product in its own terms, so the numbers below have context.

Stencil

A TypeScript-based framework for authoring standards-compliant web components and component libraries that run on any browser or framework without framework dependencies.

Independently observed

Svelte

Leader

A framework with an integrated compiler that lets developers create streamlined components using standard HTML, CSS, and JavaScript, minimizing runtime overhead in the browser.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Stencil

Pricing not documented yet.

Svelte

Leader

Open sourceFree tier

as of 2026-08-14verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Stencil	Svelte
WebPlatforms	✓	✓
CLIPlatforms	✓	✗

Platforms

Web

Stencil✓

Svelte✓

CLI

Stencil✓

Svelte✗

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.