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CaptureAPI.dev VS warmup.rocks

Compare CaptureAPI.dev VS warmup.rocks and see what are their differences

CaptureAPI.dev

Screenshot & PDF API for Developers. Capture website screenshots, convert HTML to PDF, and generate OG images with a simple API call.

CaptureAPI.dev Landing page
Rating
0 reviews
Pricing
Freemium $9 / Monthly (Starter)
Alternatives Is it good?
warmup.rocks

warmup.rocks keeps your CDN cache warm in every edge location worldwide: Cloudflare, Fastly, Akamai, CloudFront and more. Warming from 42 countries, hit-ratio analytics.

warmup.rocks Homepage
Rating
0 reviews
Pricing
Paid Free trial $15 / Monthly (1 project, 100 pages per run, Warm every 3 hours)
Alternatives Is it good?
OmniDeck Pro
Sovereign In-Browser Workstation, 50+ Local RAM Utilities & 150+ 4K Wallpapers sponsored

Which is more popular?

Website Screenshots popularity
100% vs 0%
alternatives listed
14 vs 5

Base details

Website, pricing, platforms and company facts side by side.

CaptureAPI.dev
warmup.rocks
Website captureapi.dev warmup.rocks
Pricing
Freemium $9 / Monthly (Starter) Official pricing
Paid Free trial $15 / Monthly (1 project, 100 pages per run, Warm every 3 hours) Official pricing
Platforms —
Web Wordpress WooCommerce Wix ReactJS +2
Company Startup from Spain Startup from Switzerland · 1 - 9 employees · 2026
Listed in
Website Screenshots Developer APIs Screenshots Developer Tools +1
Web Cache Developer Tools CDN SEO Dev Ops Tech Web App +4

About CaptureAPI.dev and warmup.rocks

In their own words, as submitted to SaaSHub.

CaptureAPI.dev
warmup.rocks

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,...

Read more about CaptureAPI.dev

A CDN isn't one cache. It's hundreds of independent ones, and most of them are cold. Cloudflare alone runs 300+ data centers, and each keeps its own cache. A page cached in Frankfurt is still ice cold in Tokyo, so the first visitor per region pays the full origin round trip. In our measurement of...

Read more about warmup.rocks

Features and specs

What each product offers, as listed by its team.

CaptureAPI.dev 5 features
warmup.rocks 5 features
  • Output Formats
    PNG, JPEG, PDF, OG images
  • Free Tier
    200 screenshots/month, no card required
  • Engine
    Playwright + Chromium (serverless)
  • Viewport Presets
    Mobile, Tablet, Desktop HD, 4K, Custom
  • Batch Endpoint
    Multiple URLs per API call
  • Free Resource
    Warmup.rocks offers a collection of button hover effects and micro-interactions completely free of charge, making it accessible to developers and designers of all budgets.
  • Copy-Paste Code
    The site provides ready-to-use CSS and HTML code snippets that can be easily copied and implemented directly into projects, saving development time.
  • Visual Preview
    Users can see live previews of each animation effect before deciding to use it, allowing for quick visual assessment without needing to test code first.
  • Variety of Effects
    The collection includes numerous different button animation styles, giving developers multiple creative options to enhance user interface interactivity.
  • Lightweight Implementation
    The animations are typically built with pure CSS or minimal JavaScript, making them lightweight and easy to integrate without heavy dependencies.

Analysis

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

CaptureAPI.dev
warmup.rocks

Overall verdict

  • I don't have verified, up-to-date information about CaptureAPI.dev specifically, so I can't confirm its quality, reliability, or reputation firsthand. Based on its name, it appears to be a website/screenshot capture API service, and my assessment is general rather than based on confirmed user reviews or benchmarks.

Why this product is good

  • If it functions as described (a screenshot/webpage capture API), such tools are generally useful for automating visual content generation
  • API-based capture services typically offer developer-friendly integration via REST endpoints
  • Many similar services offer features like PDF generation, full-page screenshots, and custom viewport sizing
  • Pricing for niche capture APIs is often more affordable than building in-house infrastructure

Recommended for

  • Developers needing to verify current pricing, uptime, and feature set directly from the provider before committing
  • Teams who should test the API with a free trial or sandbox environment if available
  • Users who should check independent reviews, GitHub mentions, or community feedback for real-world performance data
  • Businesses requiring SLA guarantees, who should confirm this directly with the vendor rather than relying on assumptions

No analysis of warmup.rocks yet.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
CaptureAPI.dev
warmup.rocks
100% 100%
Website Screenshots
0% 0%
0% 0%
CDN
100% 100%
100% 100%
Screenshots
0% 0%
0% 0%
Web Cache
100% 100%

Questions & Answers

As answered by people managing CaptureAPI.dev and warmup.rocks.

Who are some of the biggest customers of your product?

CaptureAPI.dev's answer

  • Independent SaaS founders using CaptureAPI for OG image generation
  • Content and growth teams generating automated blog cover screenshots
  • Small B2B platforms archiving compliance documents (PDF + screenshot)
  • Side-project builders integrating preview images into their dashboards

Named customer references available on request as the user base grows.

warmup.rocks's answer:

  • this:matters GmbH (the Swiss web agency behind the product, running client sites through it)

What makes your product unique?

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.

warmup.rocks's answer:

Most cache warmers run from one server, so they only warm the one CDN edge location that server happens to hit. CDNs like Cloudflare cache per data center, 300+ of them, and a HIT in Frankfurt says nothing about Singapore.

warmup.rocks is different:

  • Warms from 42 countries on 6 continents, so the cache gets filled where your visitors actually are
  • Verifies every response (cf-cache-status, x-cache) instead of just firing requests and hoping
  • Shows hit ratio per edge location, so you see whether warming actually works
  • Nothing to install: no plugin, no script tag, no DNS change

Why should a person choose your product over its competitors?

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.

warmup.rocks's answer:

Three reasons:

  • Geography. Competitors warm from a single region. We warm from 42 countries, which is the whole point of a CDN cache.
  • Verification. We read the cache status header of every single response and report the actual hit ratio per location, so you see whether warming works instead of taking it on faith.
  • Deploy integration. A deploy hook or our GitHub Action re-warms the cache right after you ship, which is exactly when it's coldest.

Plans start at $15/month with a 7-day free trial.

How would you describe the primary audience of your product?

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.

warmup.rocks's answer:

Developers, agencies and store owners who run sites behind a CDN (Cloudflare, Fastly, CloudFront, Akamai, bunny.net) and serve visitors in more than one region. Typical cases:

  • WordPress/WooCommerce sites where preload plugins stop at the server cache
  • Shopify and Magento stores with a long product tail that never stays warm on its own
  • Anyone whose deploys purge the edge cache and leave the first visitor per location with a slow load

What's the story behind your product?

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.

warmup.rocks's answer:

I run a web agency in Switzerland, and for years I believed our sites were fast because we put them behind Cloudflare and saw HIT in the headers. Then I measured from other continents: pages that loaded in milliseconds from Zurich took multiple seconds from Tokyo or São Paulo, because each edge location keeps its own cache and most of them were cold.

I built a warmer for our own client sites first, then measured 408,000 CDN requests and found a miss is 3.5× slower than a hit at the median. That data convinced me this should be a product.

Which are the primary technologies used for building your product?

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.

warmup.rocks's answer:

  • Node.js + TypeScript with Hono as the web framework
  • SQLite for storage
  • Astro for the public site, vanilla JavaScript for the dashboard
  • Warming requests go through dedicated datacenter proxies in 42 countries

The whole thing runs on a plain VPS behind Cloudflare, which keeps it fast and cheap without a pile of infrastructure.

User comments

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