If you've been using PDF24 Tools but want something faster, ad-free, or with better AI features, this page ranks the top 5 PDF24 alternatives we tested in May 2026: PDFKits, Smallpdf, iLovePDF, Sejda, and Adobe Acrobat Online. Each is scored on privacy, free tier, ads, AI features, and tool breadth.
PDFKits processes everything in your browser via WebAssembly. No upload, no ads, 46 tools, 7 languages, AI Chat with PDF. Free with no signup or watermarks. The closest spiritual successor to PDF24, but rebuilt with modern browser APIs and no server-side fallback.
Smallpdf has the polished UI in this category. Downsides: every operation requires uploading your file to their servers, free tier limited to 2 tasks per day, and the €9/month Pro tier is needed for unlimited use. Pick Smallpdf for occasional polished workflows you don't mind uploading.
iLovePDF offers ~25 tools and a generous free tier. Like Smallpdf, every operation routes through their servers. Free tier limits: 25 MB max file size, watermark on output for premium features. Picked by users who value tool breadth over privacy.
Sejda produces high-quality results, especially for OCR and conversion. Free tier limits: 3 tasks per hour, 200 pages or 50 MB per file. Hybrid model: some tools run in-browser, others on servers. Best for one-off precision work.
Adobe Acrobat's free online tools are limited to 2 operations per file before requiring sign-in. The full Acrobat Pro DC is €25/month. Pick Adobe only if you need its enterprise features (LiveCycle, Sign workflows) — for general PDF tasks, the free alternatives match or exceed it.
For most users replacing PDF24 in 2026, PDFKits is the strongest fit: same free-and-browser-based principle, but with better privacy guarantees, modern AI features, and a cleaner UI. Try it without signup: pick any tool from our tools list.