PDF24 Tools popularized free in-browser PDF processing and is a respectable choice. PDFKits picks up where PDF24 leaves off: 45 tools, a cleaner UI, full AI features, and a privacy posture that is structurally stronger. This page summarizes what PDFKits does differently and which PDF24 features it replaces.
PDF24 has been around since 2007. Its strengths: a broad set of free tools, no per-tool fee, a desktop installer for offline work, and German engineering reputation. The web version is functional, ad-supported, and works in any modern browser.
Three meaningful gaps: (1) UI density — PDF24 packs many tools onto a single screen; PDFKits gives each tool its own page with focused steps. (2) AI features — PDFKits includes Chat with PDF, browser-side OCR via WebAssembly, and smart optimize with no upload to AI servers for OCR. (3) No ads, no sponsored placements — PDFKits has no on-page advertising.
Every PDF24 tool has a PDFKits equivalent: Merge PDF, Split PDF, Compress PDF, PDF to Word, Word to PDF, PDF to JPG, JPG to PDF, Sign PDF, Protect PDF, Unlock PDF, Edit PDF, Add Watermark, Redact PDF, Clean Metadata, and 30 more.
PDF24's web tools mix browser-based processing with server-side fallback. PDFKits is 100% browser-based for non-AI tools — there is no server fallback. Your PDF never leaves your device unless you explicitly use the AI Chat feature. For a deeper comparison, see PDF24 vs PDFKits.