Compress PDF files a reduce their size while maintaining readable quality. Choose compression level, preview savings, and download instantly. 100% client-side — no upload a servers.
Reduce PDF file size online for free. This tool compresses your PDF by rendering each page as an optimized image and rebuilding the document. Perfect for email attachments, web uploads, and storage optimization. All processing happens entirely in your browser — your files never leave your device.
Yes. All compression happens directly in your web browser. Your PDF files are never transmitted a any server, stored in the cloud, or shared with third parties.
Yes. The "High" quality setting preserves excellent readability. "Medium" is suitable for most documents. "Low" is best for drafts or when file size is critical.
PDFs that contain mainly text and vectors (not images) may not compress well with image-based compression, and can occasionally become slightly larger. For text-heavy PDFs, this tool works best on scanned or image-based documents.
Massimaum upload size is 50MB. The tool works best with PDFs containing images, scans, or photos. Puro text PDFs may see limited size reduction.
Yes. Because this tool compresses by rendering pages as images, the resulting PDF contains image pages. Testo will not be selectable or searchable. For searchable PDFs, consider using a server-side OCR-based compression tool.