
Urlbox
ScreenshotOne
ScreenshotAPI.net
Screenshot Machine
HTMLCSS to Image API
CaptureKit.dev
URL2PNG
ApiFlash is a powerful serverless screenshot API built with Chromium and AWS Lambda. It can easily scale to millions of screenshots per day and has an ever growing number of satisfied big clients.

YAMLine
ValidKube
yamlfmt
YAML
JSON to YAML
JSON Formatter & Validator
KuberLogic
Validate YAML syntax and schemas for Kubernetes, Docker Compose, GitHub Actions, and more. Free, private, runs entirely client-side (browser extension and website).

Which is more popular?
Based on our record, ApiFlash seems to be more popular. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | apiflash.com | yamlvalidator.dev |
| Pricing | — | |
| Platforms | — | |
| Company | — | 2024 |
| Listed in |
In their own words, as submitted to SaaSHub.


ApiFlash is loaded with nice features to make sure you are able to make the pixel perfect screenshots you need to make. Full page screenshots, true IP-geolocated screenshots, proxies, user-agent, viewport dimensions ...
YAML Validator is a free, privacy-first tool for validating, formatting, and viewing YAML files — available as a Chrome extension and a website. What it does Syntax validation — catch indentation errors, duplicate keys, and malformed YAML instantly Schema validation — validate against 11+...
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


No analysis of ApiFlash yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing ApiFlash and YAMLValidator.dev.
YAMLValidator.dev's answer:
It validates YAML against real schemas — generic YAML, Kubernetes, Docker Compose, GitHub Actions, GitLab CI, Helm, OpenAPI, and more — 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 — 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 — 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 — install and go.
Share your experience with using ApiFlash and YAMLValidator.dev. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


ApiFlash is fast and cheap (Chrome on AWS Lambda, $7/mo for 1,000) but has only Third-party MCP wrappers — fine for a quick experiment, riskier for production. ScreenshotAPI.net Has a broad parameter set (element capture, video, PDF,... - Source: dev.to / 2 months ago
I built a screenshot API called ApiFlash. https://apiflash.com Quite a few of my clients use it to add "always up to date" screenshots to their documentation. - Source: Hacker News / almost 3 years ago
Hello. I'm currently using apiflash to grab pictures from several sites and I love its simplicity (a REST-API you can invoke from curl and build your request on their site). The only downside is that their free plan is a little scarce... Source: over 4 years ago
Tracking YAMLValidator.dev since Apr 2026.
When comparing ApiFlash and YAMLValidator.dev, you can also consider the following products.

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Yamline offers a suite of online YAML tools, including a Comparator, Formatter, Validator, and various converters for formats like JSON and Properties.
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Fast and reliable screenshot API built to handle millions of screenshots a month.
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ValidKube combines the best open-source tools to help ensure Kubernetes YAML best practices, hygiene & security.
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Generate beautiful website screenshots using our fast website screenshot API.
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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.
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