Yes. Every tool on PDF24 — JPG to PDF, PDF to JPG, Merge, Split, Compress, Image Compress, and Word to PDF — is 100% free with no hidden charges, premium tiers, or sign-up requirements. The site is supported by non-intrusive advertising, not by charging users.
Help Center
Frequently Asked Questions
Everything you need to know about our PDF tools, privacy-first processing, and browser-based technology.
Absolutely. Most tools process files entirely within your browser using WebAssembly and JavaScript — your data never leaves your device. Tools that require server processing (Word to PDF) transmit files over an encrypted HTTPS connection and delete them immediately after conversion.
No. All tools are purely web-based and work entirely in your browser — Chrome, Firefox, Safari, and Edge — without requiring any plugins, extensions, or software installations.
Yes. Our Merge PDF tool lets you combine as many PDF files as you need into one document. Our JPG to PDF tool lets you select multiple images and convert them all into a single PDF in one step. Both support drag-and-drop reordering before merging.
Yes. Every tool is fully responsive and tested on mobile browsers. You can convert photos from your iPhone or Android gallery, merge documents, or compress PDFs directly from your phone without installing any app.
Our JPG to PDF tool supports JPG, PNG, and WebP images. Our Image Compress tool supports JPG, PNG, and WebP input, with JPEG output. You can mix image types within a single batch.
For browser-based tools (JPG to PDF, Merge PDF, Split PDF, PDF to JPG, Image Compress, PDF Compress), there is no strict server limit because processing happens on your device. The practical limit is your device's available RAM. Most modern computers handle several hundred megabytes without issues.
Our Image Compress and PDF Compress tools use adjustable quality settings. At the default quality level (80%), visual quality is virtually indistinguishable from the original. Lower settings produce smaller files with some reduction in fine detail. You control the balance.
Because most tools process files locally without a server upload step, conversions are near-instantaneous. JPG to PDF, Merge, Split, and Compress all run in your browser's memory and complete in seconds regardless of your internet speed.
For browser-based tools, the entire conversion runs within your device's memory using WebAssembly. We have no technical ability to access your files — they never travel over the network at all. You can verify this by opening your browser's Network tab while using the tool.
Yes. The Merge PDF tool shows thumbnails of all uploaded files which you can drag to reorder before merging. The Split PDF tool shows all pages as a thumbnail grid — click to select the exact pages you want to extract.
All tools work on macOS, Windows, Linux, and ChromeOS. We support Chrome, Firefox, Safari, and Edge. As a web-based platform, no operating system software installation is ever required.
When using Split PDF in JPG export mode, you can choose between Low (100 DPI), Medium (150 DPI), and High (300 DPI) output quality. For PDF export mode, pages are copied at their original resolution with no re-encoding.
No registration, email address, or account creation is required for any tool. We provide instant, friction-free access — open the tool and start immediately.
Yes. Our PDF to JPG tool extracts pages as high-resolution JPEG images. You can select specific pages using the thumbnail grid or type a custom range like '1-5, 8, 12'. All extracted images are packaged into a ZIP file for download.
Once processing is complete, a download button appears immediately. Clicking it saves the file directly to your device's default downloads folder. No email, no link expiry, no waiting.
No. Unlike many services that restrict you to 2-3 conversions per day, PDF24 offers unlimited daily use for all tools and all users. There is no account-based quota of any kind.
Yes. All tools are available for personal, educational, and commercial use at no cost. Because sensitive files are processed locally without server uploads, they are completely safe for confidential business documents.
PDF Compress reduces the file size of existing PDF documents by re-encoding their internal images. Image Compress reduces the size of standalone JPG or PNG image files before you use them elsewhere. If you want to shrink a PDF, use PDF Compress. If you want to shrink photos, use Image Compress.
Technical Overview of Our PDF Tools
Our client-side PDF engine uses WebAssembly to perform complex conversions directly in your browser. When you convert JPG to PDF or compress images, your files stay on your device — providing the highest level of data privacy possible.
Tools like Merge PDF and Split PDF use pdf-lib and PDF.js — open-source libraries that run entirely in your browser — to restructure documents without any server involvement.