PDF24 Compare PDF vs Smallpdf

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.

Smallpdf is a PDF service with tools for editing, converting, compressing, organizing, sharing, protecting and scanning documents. Users can add text, shapes, images and freehand annotations, create forms and use OCR. It supports electronic signatures, including signing, requesting signatures and tracking documents. Files can be stored, managed and shared across devices, and the mobile app supports PDF scans, document organization and file sharing. Smallpdf is available on the web, Windows, iOS and Android, and also supports a Chrome extension. Integrations include Google Workspace and Dropbox. Thirty PDF tools are available for free, and the free trial lasts seven days. Pro costs $12 a month, billed monthly per user. Team costs $10 a month per user and covers 2 to 100 users, with a minimum of two seats. Smallpdf says it uses 256-bit TLS encryption for information transfer and is ISO/IEC 27001 certified and compliant with GDPR, CCPA and nFADP. Customer support is available around the clock.