Click to upload or drag and drop
PDF files only
No files selected. Drag and drop PDFs or click "Select PDF Files".
50
Your files are processed in your browser - they never leave your device
Click to upload or drag and drop
PDF files only
50
Your files are processed in your browser - they never leave your device
Click to select or drag and drop your large PDF file (up to hundreds of MB, depending on your device memory).
Use the slider to set how much you want to compress. Lower settings preserve quality, higher settings create much smaller files.
Click 'Compress PDF' - the tool processes your large file locally in your browser without uploading anywhere.
Once compression is complete (typically 10-60 seconds for large files), click 'Download PDF' to save it to your device.
Yes, you can compress large PDF files up to several hundred megabytes, depending on your device's available memory. All processing happens locally in your browser at no cost.
The limit depends on your device's RAM and browser capabilities. Most modern devices can handle PDFs up to 200-500 MB. Very large files may take longer or affect performance on older devices.
Quality reduction depends on the compression level you choose and the original file's content. You can adjust the slider to find the right balance between file size reduction and visual quality for your large document.
Yes, completely safe. Since all compression happens in your browser, your large PDF files are never uploaded to any server. They remain entirely on your device throughout the process.
Compression time varies based on file size and your device's processing power. A 100 MB PDF typically compresses within 10-30 seconds. Larger files may take a minute or more.