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HTML PDF API VS PDFik

Compare HTML PDF API VS PDFik and see what are their differences

DocRaptor
As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more sponsored
Contents:
  1. ยป Base Details
  2. ยป Reviews
  3. ยป Alternatives

HTML PDF API logo HTML PDF API

Easily generate PDF documents from HTML code with our powerful API

PDFik logo PDFik

Async API that turns URLs or HTML into PDFs: signed webhooks on every plan, free test mode, 150 MB files, guaranteed 24-hour deletion, official JS/Python/Java SDKs. Free tier: card verified, not charged.
  • HTML PDF API Landing page
    Landing page //
    2018-12-13
  • PDFik Async HTML/URL to PDF API โ€” submit a job, get a signed webhook
    Async HTML/URL to PDF API โ€” submit a job, get a signed webhook //
    2026-08-13
  • PDFik Console: usage, rendering metrics and API keys
    Console: usage, rendering metrics and API keys //
    2026-08-13
  • PDFik Plans: free tier plus paid subscriptions, all limits published
    Plans: free tier plus paid subscriptions, all limits published //
    2026-08-13
  • PDFik Quickstart: first PDF in about 60 seconds
    Quickstart: first PDF in about 60 seconds //
    2026-08-13

PDFik is an asynchronous PDF generation API for developers: send a public URL or raw HTML, get back a job ID, and receive a signed webhook when the PDF is ready โ€” no polling loops required (polling endpoints exist too). Rendering runs on sandboxed headless Chromium, so modern CSS, web fonts and JavaScript-heavy pages come out pixel-accurate.

What makes it different:

  • Delivery you can trust. Every webhook is HMAC-signed and available on every plan, including Free. Failed deliveries are retried on a 2/5/15/30/60-second ladder (6 attempts in total) and then parked in a dead-letter queue โ€” a lost callback is an incident on our side, not silence on yours.
  • Honest, two-meter billing. Plans meter rendered PDFs and generated gigabytes separately โ€” downloads never debit your data quota. Every limit is published on the pricing page.
  • Free test mode. Pass "test": true to exercise the full pipeline โ€” statuses, webhooks, signatures, downloads โ€” without spending your quota.
  • Files up to 150 MB on every plan, including Free.
  • Privacy by default. Generated documents are guaranteed deleted within 24 hours; per-job credentials are encrypted end to end.
  • Typed SDKs for JavaScript/TypeScript, Python and Java, plus copy-paste quickstarts for curl.

The Free plan includes 100 PDFs and 0.5 GB per month (card verified, never charged), and there is a no-account sandbox on the homepage to try a real render first. Paid plans start at $29/month (Starter, 5,000 PDFs / 10 GB) with a 99.5% SLA on all paid tiers.

HTML PDF API

Website
htmlpdfapi.com
Pricing URL
Official HTML PDF API Pricing
$ Details
-
Release Date
-
Edit details

PDFik

Website
pdfik.net
Pricing URL
Official PDFik Pricing
$ Details
freemium $29 / Monthly (Starter, 5,000 PDFs / 10 GB)
Release Date
2026 August
Startup details
Country
Poland
Founder(s)
Vitalii Nemudryi
Employees
1 - 9
Edit details

HTML PDF API features and specs

  • Ease of Use
    HTML PDF API provides a straightforward interface for converting HTML content to PDFs, making it accessible for developers of all skill levels.
  • High-Quality Output
    The service generates high-fidelity PDF documents that accurately capture the design and functionality of the original HTML.
  • Customization
    Offers extensive customization options, including the ability to set page size, margins, headers, footers, and custom CSS.
  • API Integration
    Easily integrates with various programming languages and environments through RESTful API calls, enhancing its versatility in different projects.
  • Cloud-Based Service
    Being a cloud-based service, it eliminates the need for local installations and maintenance, reducing the burden on local resources.
  • Security
    Supports HTTPS, ensuring that data transmitted to and from the service is encrypted and secure.

Possible disadvantages of HTML PDF API

  • Cost
    Depending on your usage, HTML PDF API can become expensive, particularly for large-scale operations requiring high volume or premium features.
  • Dependency on Internet Connectivity
    Being a cloud-based service, it requires a stable internet connection, which can be a limitation in environments with poor connectivity.
  • Latency
    Network latency can affect the speed of PDF generation, which may impact time-sensitive applications.
  • Rate Limiting
    Usage may be subject to rate limiting, potentially hindering the performance of high-demand applications or requiring additional cost to increase limits.
  • Privacy Concerns
    Sensitive data needs to be transmitted to a third-party server for processing, which could raise privacy and compliance concerns depending on jurisdiction and data sensitivity.
  • Potential Downtime
    As with any cloud-based service, there is a risk of downtime or service disruptions due to server issues or maintenance.

PDFik features and specs

  • URL to PDF
    Render any public webpage into a pixel-accurate PDF (sandboxed Chromium)
  • HTML to PDF
    Send raw HTML, get a PDF back
  • Async job API
    Submit a job, get notified when the PDF is ready โ€” no polling loops (polling works too)
  • Signed webhooks
    HMAC-signed, on every plan incl. Free; failed deliveries retried, then dead-lettered
  • Free test mode
    "test": true exercises the full pipeline without spending quota
  • Large files
    Up to 150 MB per file on every plan, including Free
  • Privacy
    Generated PDFs guaranteed deleted within 24 hours
  • SDKs
    Typed JavaScript/TypeScript, Python and Java clients
  • Honest billing
    Rendered PDFs and generated GB metered separately โ€” downloads never debit quota
  • SLA
    99.5% on all paid tiers

Analysis of HTML PDF API

Overall verdict

  • Overall, HTML PDF API is a solid choice for those seeking a reliable and powerful tool for HTML to PDF conversion. It balances advanced features with ease of use, making it suitable for both technical and less technical users.

Why this product is good

  • HTML PDF API (htmlpdfapi.com) is considered good by many users due to its ease of use, reliability, and ability to convert HTML content to PDF format efficiently. It supports a variety of advanced features like custom headers/footers, PDF encryption, and more, which are crucial for many applications. Furthermore, it is valued for providing an API that integrates well with different programming languages and environments, making it accessible for developers across platforms.

Recommended for

  • Developers needing to automate PDF generation from HTML templates.
  • Businesses requiring dynamic report generation in PDF format.
  • Web applications that need to provide downloadable content or invoices as PDF files.
  • Educational institutions looking to convert web content to PDFs for offline access.

Category Popularity

0-100% (relative to HTML PDF API and PDFik)

HTML PDF API

PDFik

HTML To PDF
93 93%
HTML To PDF
7% 7
PDF Tools
91 91%
PDF Tools
9% 9
PDF Conversion API
90 90%
PDF Conversion API
10% 10
PDF Converter
100 100%
PDF Converter
0% 0

Questions & Answers

As answered by people managing HTML PDF API and PDFik.

Why should a person choose your product over its competitors?

PDFik's answer:

Many PDF APIs convert file size into "credits" that quietly eat into your document count; PDFik meters rendered PDFs and generated gigabytes separately and publishes every limit on the pricing page. Signed webhooks with automatic retries and a dead-letter queue ship on all plans โ€” a lost callback is an incident on our side, not silence on yours. The Free plan renders files up to 150 MB, while budget competitors typically cap free tiers at 1โ€“2.5 MB. And "test": true lets you integrate against the real pipeline โ€” statuses, webhooks, signatures โ€” without touching quota. Your card is verified, never charged.

How would you describe the primary audience of your product?

PDFik's answer:

Developers and engineering teams who generate documents from their backends โ€” invoices, receipts, reports, tickets โ€” and anyone tired of maintaining their own wkhtmltopdf builds or a self-managed Puppeteer/Chromium fleet. If you want page-to-PDF rendering to be an API call with a signed callback instead of a service you babysit, PDFik was built for you.

What's the story behind your product?

PDFik's answer:

PDFik came from running page-to-PDF rendering in production the hard way: patched wkhtmltopdf builds, then a self-managed fleet of headless browsers. The takeaway: rendering belongs behind an async API with honest limits. PDFik is founder-built and bootstrapped, and in a category full of asterisks โ€” hidden credit math, vague retention โ€” it bets on published limits, signed webhooks, and guaranteed 24-hour deletion of generated documents.

Which are the primary technologies used for building your product?

PDFik's answer:

Rendering runs on sandboxed headless Chromium driven by Playwright โ€” one isolated browser context per job. The public API is Python/FastAPI; jobs flow through AWS SQS to autoscaled workers on EKS (ARM/Graviton), with PostgreSQL, Redis, and S3 behind them. The dashboard is Next.js/TypeScript, and the official SDKs ship in TypeScript, Python, and Java.

What makes your product unique?

PDFik's answer:

PDFik is async-first: submit a URL or raw HTML, get a job ID back, and an HMAC-signed webhook tells you when the PDF is ready โ€” on every plan, including Free. Billing runs on two published meters โ€” rendered PDFs and generated gigabytes, counted separately โ€” and downloads never debit your quota. Add to that a free test mode that exercises the full pipeline without burning quota, 150 MB files even on the Free plan, and guaranteed deletion of generated documents within 24 hours.

User comments

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What are some alternatives?

When comparing HTML PDF API and PDFik, you can also consider the following products

PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request

pdflayer - Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.

PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.

DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more

HTML2PDF.fr - HTML2PDF is a HTML to PDF converter that allows the conversion of valid HTML 4.

PDF Toolkit API - Create PDF documents from HTML, including invoices & receipts, reports and general archiving, dashboards and more.

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