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YAML Validator is a free, privacy-first tool for validating, formatting, and viewing YAML files โ available as a Chrome extension and a website.
---Paste or type YAML into the editor. YAML Validator auto-detects the schema (e.g., spots apiVersion + kind and picks Kubernetes) and validates both syntax and structure in one click. If the detected schema doesn't match, it suggests the right one with a single-click switch.
Everything runs client-side โ your files never leave your machine. No accounts, no server processing, no data collection. Works offline, loads instantly.
Whether you're writing Kubernetes manifests, debugging a CI pipeline, or reviewing a Helm chart on GitHub โ YAML Validator catches errors before they reach production. The Chrome extension currently has around 800 users worldwide.
Available in 54 languages.
Notepad++ YAMLValidator.devNotepad++ is recommended for programmers, developers, and writers who need a robust text editor with advanced features. It's ideal for anyone using Windows who wants a free, efficient, and customizable editing solution capable of handling a wide range of file types and coding languages.
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YAMLValidator.dev's answer:
It validates YAML against real schemas โ generic YAML, Kubernetes, Docker Compose, GitHub Actions, GitLab CI, Helm, OpenAPI, and more โ not just syntax checking. Everything runs client-side, so your config files never leave your machine. It works both as a Chrome extension (with GitHub integration for collapsible code blocks) and as a standalone website.
YAMLValidator.dev's answer:
DevOps engineers, SREs, and backend developers who work with Kubernetes manifests, Docker Compose files, CI/CD pipelines (GitHub Actions, GitLab CI, CircleCI, Azure Pipelines), Helm charts, and OpenAPI specs. Anyone who edits YAML config files and wants instant validation without leaving the browser.
YAMLValidator.dev's answer:
I am software engineer and extension(and lately site) was made out of frustration with debugging YAML indentation errors in CircleCI schemes and Kubernetes deployments. A misplaced space in a YAML file can break an entire deployment, and generic text editors don't catch schema-level mistakes. YAML Validator was built to catch those errors before they reach production โ directly in the browser, with zero setup.
YAMLValidator.dev's answer:
JavaScript/TypeScript, CodeMirror (editor), js-yaml (parsing), Ajv (JSON Schema validation), Lit (web components), and Tailwind CSS. Built as a Chrome Extension (Manifest V3) with Vite as the bundler. Schemas are pre-compiled at build time for performance and CSP compliance
YAMLValidator.dev's answer:
YAML Validator is a free, open-use tool โ it doesn't track users or require accounts. It's used by individual developers and teams working with Kubernetes, Docker, and CI/CD pipelines. As a privacy-first browser tool, there's no customer list by design. The browser extension currently has around 800 users worldwide.
YAMLValidator.dev's answer:
There's simply no other Chrome extension that does this. Most online YAML tools are web-only, require an internet connection, and only check syntax. YAML Validator runs entirely offline, validates against 11+ schemas with auto-detection (Kubernetes, Docker Compose, GitHub Actions, and more), and enriches GitHub with collapsible code blocks for YAML files. It's fast, private, and requires zero setup โ install and go.
I've been using it for a long time, I can say that it has become my main tool in my work. First, you need to get used to using it and look at all the functionality. Overall, it's useful for me!
Based on our record, Notepad++ seems to be more popular. It has been mentiond 176 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I would like to recommend notepad++. It does the job and I especially like it for multi-document and the other feautures like regex replace and plugins, etc... https://notepad-plus-plus.org. - Source: Hacker News / about 1 year ago
Are you transitioning from Windows to Linux but struggling to replace tools like Notepad++ or WinMerge? Thanks to Wine and Bottles, you can now run Windows-only applications natively on Linux. This guide will show you how to install Windows apps on Linux effortlessly, perfect for .NET developers or anyone needing Windows tools in a Linux environment. - Source: dev.to / over 1 year ago
Then we need to modify Cargo.toml file located in your folder that you created with the above command, right click and edit I use notepad++ (to download notepad++ use this link (https://notepad-plus-plus.org/) so you will get the option to edit file directly. - Source: dev.to / over 1 year ago
Always working in the js-fundamentals.js file Open the file with any text editor. For now, use Notepad++. - Source: dev.to / over 1 year ago
Where to get it: Https://notepad-plus-plus.org/ Plugin: inside Plugin Admin. - Source: dev.to / over 1 year ago
VS Code - Build and debug modern web and cloud applications, by Microsoft
YAMLine - Yamline offers a suite of online YAML tools, including a Comparator, Formatter, Validator, and various converters for formats like JSON and Properties.
Sublime Text - Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features. Fully customizable with macros, and syntax highlighting for most major languages.
ValidKube - ValidKube combines the best open-source tools to help ensure Kubernetes YAML best practices, hygiene & security.
GNOME - An easy and elegant way to use your computer, GNOME is designed to put you in control and get things done.
yamlfmt - An extensible command line tool or library to format yaml files. - GitHub - google/yamlfmt: An extensible command line tool or library to format yaml files.