JSONLint

Spec sheet

Purpose

JSONLint is a validator and formatter for JSON that accepts pasted or typed code and URLs containing JSON.Read 2 Oct 2026 · jsonlint.com

Privacy

The privacy policy says JSON validation happens in the browser and JSON content is not sent to JSONLint servers for processing.Read 2 Oct 2026 · jsonlint.com

Analytics and cookies

The privacy policy says the site uses Google Analytics and cookies for preferences, analytics, and advertising.Read 2 Oct 2026 · jsonlint.com

Chrome extension

The free Chrome extension offers a collapsible JSON tree, image previews, clickable URLs, timestamps, and export to jsonlint.com.Read 2 Oct 2026 · jsonlint.com

Conversions

The site lists converters between JSON and CSV, Excel, SQL, YAML, XML, Java, and Python.Read 2 Oct 2026 · jsonlint.com

Error reporting

The site says its validator identifies errors and reports their line numbers.Read 2 Oct 2026 · jsonlint.com

Extension privacy

The extension page says it operates client-side and does not track or collect data.Read 2 Oct 2026 · jsonlint.com

Mac app

JSONLint Pro offers real-time validation, repair of common JSON errors, formatting, conversions, tree view, and multi-document tabs.Read 2 Oct 2026 · apps.apple.com

Mac app privacy

The Mac app listing says it works offline on the device and requires no account, analytics, tracking, or internet connection.Read 2 Oct 2026 · apps.apple.com

Open source engine

The site says its validator uses @jsonlint/core, which is available to install with npm for use in other projects.Read 2 Oct 2026 · jsonlint.com

URL input

Users can supply a URL containing JSON for JSONLint to retrieve and parse.Read 2 Oct 2026 · jsonlint.com

Web tools

JSONLint lists formatting, minifying, comparison, tree viewing, schema validation, and JSON Path tools.Read 2 Oct 2026 · jsonlint.com

Plans and prices

Every JSONLint plan and price →

Where Specifiction places it

• JSON Tools#23 of 297.2