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Your Open-Source Library vs Iron Software

What you have today vs. what you're switching to

OPEN-SOURCE

Free to adopt. Not free to keep

  • Engineering time you can't bill

    Your time is lost to glue code, wrappers, and edge-case fixes. Waste of time rewriting codes & keeping it.

  • No SLA on security patches

    When the next CVE drops, your team owns the fix.

  • Rendering gaps in production

    Modern CSS, Flexbox, Grid, and JavaScript fail in legacy engines. Some libraries don't render HTML at all.

  • Nothing for procurement to sign

    No vendor statement. The compliance answer is a GitHub readme.

IRON SOFTWARE

Iron Software fits now & every release after

  • Save Engineering time

    Built-in production-ready APIs that reduce custom glue code, maintenance overhead, and monthly product releases.

  • Vendor-managed security

    Active releases, patched CVEs, and security disclosures you can hand to audit.

  • Modern Chromium Rendering

    Full HTML5, CSS3, Flexbox, Grid, and JavaScript support

  • Commercial license, OEM included

    Redistribution, SaaS, embedding. Vendor statements available for audit.

Compare PDF libraries

Iron Software, PDFsharp, QuestPDF, PuppeteerSharp, and wkhtmltopdf at a glance

IronSoftwarePDFsharpQuestPDFPuppeteer Sharpwkhtmltopdf
Rendering engine Chromium, embedded None (coordinate API) None (fluent API) Chromium, external process QtWebKit, ~2012
HTML & CSS supportFull HTML5/CSS3, Flexbox, Grid, JavaScript None natively (CSS 2.1 via add-on) No HTML parserFull (it is Chrome)Limited; no Flexbox or Grid
LicenseCommercial, perpetual from $999MITCommunity under $1M revenue, then commercialMITLGPL, repository archived
Maintenance statusActive, regular releasesActive communityActiveActiveArchived July 2024
Known unpatched CVEs None outstanding None inherent None inherent None, you manage ChromeCVE-2022-35583 (9.8), CVE-2020-21365 (7.5)
Operational overheadNuGet onlyNuGet onlyNuGet onlyBrowser process, pooling, crash recoveryNative binary management + CVEs
Vendor support24/7, real engineersCommunity onlyCommunity onlyCommunity only None, abandoned
Audit / vendor statementAvailable on request None None None None

Outgrowing your open-source library?

Tell us what you're using and where you're hitting limits. We'll match you with the right path.

  • CVE patching, rendering, license, or scale.
  • Engineer-led response within 1 business day.
  • If Iron isn't the right fit, we'll tell you.
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Before you commit

Tutorials, feature walkthroughs, and real C# code in action.

Check out the IronPDF Youtube channel

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