#40 in Code AssistantsUpdated 2026-08

JSFiddle

by jsFiddle · Browser playground for HTML, CSS and JavaScript

18.5 — BenchRank score out of 100

Homepage

Visit website See full Code Assistants ranking

Overview

JSFiddle is an online editor with separate HTML, JavaScript and CSS panes and a result panel that renders the combined output. Fiddles can be started from boilerplates including jQuery, React, React + JSX, Preact, TypeScript, CoffeeScript, SCSS, CSS Grid, Bootstrap, PostCSS and Tailwind, with libraries pulled in from CDNJS and recent fiddles kept against an account.

Best for: Front-end developers testing HTML, CSS and JavaScript snippets in the browser without local setup.
Pricing: The page advertises free use and a 'Go PRO' upgrade, but shows no prices.
Runs on: Web

Strengths and trade-offs

Strengths

Live result pane beside HTML, CSS and JavaScript editors
Boilerplates for React, Preact, TypeScript, SCSS and Bootstrap
External libraries available through CDNJS
AI code completion listed as a feature

Trade-offs

Carbon ads are displayed in the editor
Collections are marked PRO, so gated behind a paid plan
No prices published for the PRO plan on the captured page
Only front-end languages shown; no server-side runtime

How this score is made up

Each dimension is scored out of 100 and combined into the headline score using fixed weights.

MCP support: 0 out of 100
Documentation: 50 out of 100
Agent friendliness: 9 out of 100
Changelog: 0 out of 100
Marketing site structure: 20 out of 100
Operational trust: 40 out of 100

Measured, but not part of the score

Useful to know, but not a mark for or against the product — so these do not affect the ranking.

Openness: 60 out of 100
Maintenance: 100 out of 100

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