
Selenium
Testsigma
TestMu AI (Formerly LambdaTest)
TestComplete
Ghost Inspector
mabl
BrowserStack
Built on the top of Selenium and Appium, Katalon Studio is a free and powerful automated testing tool for web testing, mobile testing, and API testing.

ScreenshotAPI.net
HTMLCSS to Image API
Bannerbear
Fronty
ApiFlash
HTMLCSStoImg.com
ScreenshotRun
Screenshot & PDF API for Developers. Capture website screenshots, convert HTML to PDF, and generate OG images with a simple API call.

Which is more popular?
Based on our record, Katalon seems to be more popular. It has been mentioned 12 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | katalon.com | captureapi.dev |
| Pricing | ||
| Company | — | Startup from Spain |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Katalon yet.
CaptureAPI is a developer-focused serverless API for capturing website screenshots (PNG, JPEG), converting HTML to PDF, and generating Open Graph images. Built on Playwright + Chromium, it supports 5 viewport presets (Mobile, Tablet, Desktop HD, 4K, Custom), CSS selector targeting, watermarks,...
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
Katalon is recommended for software testing teams and quality assurance professionals who are seeking a cost-effective and versatile automation tool. It's especially well-suited for those who work with diverse technologies and want an all-in-one platform for their test automation needs. Its ease of use makes it accessible for those new to automation, while its advanced features cater to more experienced testers.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Katalon and CaptureAPI.dev.
CaptureAPI.dev's answer:
Named customer references available on request as the user base grows.
CaptureAPI.dev's answer:
CaptureAPI bundles website screenshots, HTML-to-PDF conversion, and OG image generation into a single predictable API endpoint. Unlike heavy headless-browser platforms, it offers a 200/month free tier, transparent flat-rate pricing, and a developer-first design with no per-call billing surprises.
CaptureAPI.dev's answer:
Three reasons: (1) honest free tier — 200 captures/month, no credit card; (2) flat pricing ($9 / $29 / $79) instead of per-call confusion; (3) screenshot, PDF, and OG image generation all in one API rather than three separate services.
CaptureAPI.dev's answer:
Indie developers, side-project builders, and small SaaS engineering teams who need a reliable screenshot/PDF/OG API without enterprise contracts. Common use cases: OG image generation, blog cover screenshots, automated archiving, and product preview generation for landing pages.
CaptureAPI.dev's answer:
CaptureAPI was built by an indie maker tired of stitching together Puppeteer scripts, paying enterprise prices for a single feature, and dealing with hidden rate-limit surprises. It launched in early 2026 as part of the DevToolsmith portfolio with the goal of offering screenshot, PDF, and OG generation under one developer-friendly API.
CaptureAPI.dev's answer:
Next.js 16, TypeScript, Vercel Functions (Fluid Compute), Playwright for headless rendering, Sharp for image processing, Upstash Redis for rate limiting and caching, Stripe for billing, and Sentry for observability. Serverless on EU + US edge for low latency.
Share your experience with using Katalon and CaptureAPI.dev. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Katalon Studio is an integrated environment for API, web, desktop, and mobile testing. It provides a rich feature set for comprehensive testing.
Katalon Studio is a versatile testing platform that provides a comprehensive solution for web, API, mobile, and desktop application testing. It's designed for users of all technical levels and features codeless test...
API testing in Katalon Studio is a comprehensive feature that supports all sorts of REST, SOAP/1.1, and SOAP/1.2 calls. Katalon Studio allows testers to collaborate in multiple ways on their API project, including...
We have no reviews of CaptureAPI.dev yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Katalon True Platform is designed for teams making the transition from fragmented toolstacks to a unified quality system. It covers the full testing lifecycle in one platform: manual testing, test automation, test management, test... - Source: dev.to / 4 months ago
TL;DR: For AI-native test generation from specs, try Kusho AI. For the most complete platform with the newest AI Agent Mode, go Postman. For open-source and Git-native workflows, Bruno or Hoppscotch are your best bets. Enterprise teams... - Source: dev.to / 6 months ago
Overview: Katalon Studio now offers a beta AI test case generator capable of producing test scenarios from OpenAPI/Swagger specifications. - Source: dev.to / 11 months ago
Tracking CaptureAPI.dev since Mar 2026.
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