ToolKitSphereWeb Optimize PDF
Files never leave your browserRecompress a PDF's internal object structure for a smaller file.
One file · up to 100.0 MB · or press Ctrl+V to paste
Upload a PDF to get started
Recompress a PDF's internal object structure for a smaller file.
One file · up to 100.0 MB · or press Ctrl+V to paste
Upload a PDF to get started
Combine multiple PDFs into one file, in the order you choose.
Pull specific pages or ranges out of a PDF into separate files.
Shrink PDF file size with Low/Medium/High presets and see real savings.
Add text, shapes, and freehand marks directly on rendered PDF pages.
Password-protect a PDF with real RC4-128 encryption.
Re-saves a PDF using compressed cross-reference and object streams, which reduces structural overhead — smaller cross-reference tables, fewer redundant indirect objects. This does not implement true PDF linearization ("Fast Web View"), which requires physically reordering the file so the first page's data comes first; that reordering isn't supported by the underlying library. Pair with Compress PDF if image-driven file size is the actual concern.
No. All operations for Web Optimize PDF take place locally in your web browser. No files are uploaded to our servers.
Yes, Web Optimize PDF is 100% free with unlimited usage and no hidden fees or account registration.
Yes! You can use Web Optimize PDF on smartphone and tablet browsers without installing any mobile app.