Observed arrival · 2026-10-03

CSSV: CSV with a stylesheet on top

cssv.dev Visit website

Editorial interest 82/100 Selection signal · not a rating of the site

CSSV is a plain-text format that pairs CSV data with CSS so a browser can render a styled HTML table from one file.

Landing page captured for the 2026-10-03 issue.

For: Developers and teams sharing styled tabular data
Worth noticing: The conformance matrix maps specification requirements to named tests, with examples checked in Node and headless Chromium.

Field notes

A .cssv file places CSS between two --- fences and RFC 4180 CSV after them; the renderer supplies a fixed table model with data-col, data-row, and data-key hooks. The page also documents deliberate limits: there are no formulas, and cell values are not copied into arbitrary attributes. A conformance matrix links specification requirements to tests, with examples checked in Node and headless Chromium.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

ƒJavaScriptBrowser-side code central

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