Gaffa vs. SlimerJS Comparison


Gaffa Gaffa.dev	SlimerJS	+	+
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About Gaffa is a web scraping and browser automation API that gives developers full, real-browser control with a single API call no headless browsers, proxies, CAPTCHA handling, or scaling infrastructure to manage. JavaScript rendering is handled by default, so pages load exactly as they would for a real visitor. Gaffa supports web scraping, AI-powered structured data extraction, screenshot capture, PDF export, infinite-scroll handling, form filling, and converting any webpage into clean, LLM-ready Markdown for AI and RAG pipelines. A rotating residential proxy network ensures reliable access across geographies with automatic anti-bot bypass. Credits are charged only for actual browser execution time and bandwidth used, with no fixed infrastructure costs.		About SlimerJS is a free, open source scriptable browser for web developers, allowing interaction with web pages through external JavaScript scripts. It enables tasks such as opening web pages, clicking links, and modifying content, making it useful for functional tests, page automation, network monitoring, screen capture, and web scraping. Unlike PhantomJS, SlimerJS runs on top of Gecko, the browser engine of Mozilla Firefox, instead of WebKit, and can operate in both headless and non-headless modes. APIs of SlimerJS are similar to the APIs of PhantomJS but there are a few differences in their behavior. However, most of the scripts for PhantomJS run perfectly well with SlimerJS right now.
Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported		Platforms Supported Windows Supported Mac Supported Linux Supported Cloud Not Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Developers, AI engineers, and data teams across startups, agencies, and enterprises in industries such as e-commerce, market research, finance, recruitment, real estate, and AI/ML- any organisation that needs reliable, large-scale web data without managing its own scraping infrastructure.		Audience Web developers interested in a scriptable browser to automate and test web page interactions using JavaScript
Support Phone Support Not Supported 24/7 Live Support Supported Online Supported		Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported
API Offers API Supported		API Offers API Supported
Screenshots and Videos View more images or videos		Screenshots and Videos View more images or videos
Pricing $20 per 5000 credits Gaffa uses a simple credit-based pricing model. Plans start at $20 for 5,000 credits, with no subscription lock-in. Credits cover both browser execution time (1 credit per 30 seconds of runtime) and residential proxy bandwidth (750 credits per GB). A typical browser session, combining short execution time with low proxy bandwidth costs, costs around 3 credits, so 5,000 credits covers roughly 1,600+ typical sessions. All new accounts also receive 500 free credits to get started, no credit card required. Free Version Not Supported Free Trial Supported		Pricing Free Free Version Supported Free Trial Not Supported
Reviews/Ratings Overall 5.0 / 5 ease 5.0 / 5 features 5.0 / 5 design 5.0 / 5 support 5.0 / 5 Read all reviews		Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software
Pros from Real Users Pros Super reliable and straightforward tool. Refined set of features and clear documentation. Our setup couldn't have been much faster and we've not had any issues with the tool in over a year! Our system was using a more expensive competing product, but Gaffa made the transition simple and seamless. We are primarily using it to print PDF reports from our site, but plan to expand its use to other parts of our product and processes. Very easy to get going! Really expressive API. Saved me a lot of time and allowed me to do just what I needed in terms of interacting with sites and getting data back in the right way. Also the dashboard where you can see your previous requests is really useful when debugging!
Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported		Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information Gaffa.dev Founded: 2024 United Kingdom gaffa.dev/		Company Information SlimerJS United States slimerjs.org
Alternatives ScrapeBadger		Alternatives PhantomJS
ZenRows		trifleJS
ScrapingBypass		DocRaptor Expected Behavior
ScrapeUp		blanket.js Blanket.js
ScrapingAnt View All		Karma View All
Categories AI Automation Supported Browser Automation Supported Web Scraping Supported Web Scraping APIs Supported		Categories Headless Browsers Supported

Integrations JavaScript Supported HTML Supported Markdown Supported Mozilla Firefox Not Supported Playwright Supported Puppeteer Supported Selenium Supported View All 6 Integrations		Integrations JavaScript Supported HTML Not Supported Markdown Not Supported Mozilla Firefox Supported Playwright Not Supported Puppeteer Not Supported Selenium Not Supported View All 2 Integrations
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