PDF24 Compare PDF vs PDFMerged

PDF24 Compare PDF compares two versions of a PDF and marks text that has changed, been added, or been removed. Readers can view the documents side by side, as an overlay, or with a slider. The comparison runs directly in a browser without installation, and PDF24 says the files are not uploaded to its servers. Google Drive is listed as a file-selection option. Use is free, with no registration or time restrictions. PDF24 says transfers are SSL secured and server files are automatically deleted after one hour. For offline processing, PDF24 Creator keeps files on the local PC, but it can only be installed on Windows; Linux and Mac are not supported. PDF24 Tools can be installed from a browser on Android or iPhone and iPad, though it is not distributed through Google Play or the App Store. PDF24 says its online tools are available to companies free of charge and without restriction, and a data-processing agreement can be requested.

PDFMerged combines multiple PDFs into one document in a browser and can include JPG, JPEG, and PNG images. Files can be dragged into a preferred order before merging. It requires no installation or account sign-up, and processing happens client-side; the maker says files are not uploaded to or stored on its servers. The Free plan costs nothing and allows unlimited file size and PDF count, subject to available device memory. Password-protected PDFs must be unlocked first. The maker says merging preserves original PDF quality, resolution, and formatting. Its privacy policy says it collects anonymous counts of files merged, language preference, basic browser information, and merge timestamps, but not IP addresses, file names, or file contents. The policy also says it does not use third-party analytics, advertising, or tracking services. The tool is browser-based and listed for Android, iOS, Linux, macOS, Windows, and web. The terms say the service is provided as available and uninterrupted access is not guaranteed.