Sign X PDF
Compress a PDF in your browser
Compress a PDF directly in your browser with Sign X PDF. Processing stays on your device instead of uploading the file to Sign X PDF servers. No account is required. Download the smaller PDF when you finish.
Your PDF is processed locally in your browser and is not uploaded to Sign X PDF servers.
Use this tool in your browser
Enable JavaScript to edit PDFs locally in your browser. No upload is required once the page assets have loaded.
What this tool does
Load a PDF, choose a target size where available, run compression in the browser, and download the result.
How to use it
- Open a PDF in the workspace.
- Choose compression settings.
- Run compress and review the result size.
- Download the compressed PDF.
How local processing works
Compression uses on-device processing after the tool assets load. The PDF is not uploaded to Sign X PDF servers for compression.
Limitations
- How small a file can become depends on content (scans vs text).
- Heavy compression can reduce visual quality of images inside the PDF.
FAQ
Will compression always reach my target size?
Not always. Image-heavy scans compress differently from text PDFs. The tool reports the size it achieved.
Is the PDF uploaded to compress it?
No. Compression is designed to run locally in your browser.