Free PDF Compressor – Reduce PDF Size Online
Optimize PDF files instantly without losing quality.
ToolCraftr is a free PDF compressor that reduces file size by optimizing the internal structure of your documents. Our online PDF optimizer efficiently removes redundant data while maintaining the visual integrity of your files. Perfect for sharing via email or web upload.
Why compress PDFs?
Faster Uploads – Smaller files upload quicker to websites, emails, and portals.
Save Storage Space – Reduce storage costs and keep your device clutter-free.
Email Attachment Limits – Send large documents without hitting size caps.
Improved Performance – Optimized PDFs load faster for viewers.
Key Features
Structure Optimization
Cleans up internal PDF structure by removing unused objects and compressing streams.
Fast Processing
Compression happens instantly in your browser. No queue, no waiting.
100% Private
Files are processed locally. Your sensitive documents never leave your device.
Preserve Quality
Retains original image quality and text sharpness while reducing size.
Detailed Stats
See exact original size, optimized size, and percentage reduction.
Free Download
Download your optimized PDF immediately without watermarks.
How PDF optimization works
PDFs often contain redundant data, unused fonts, and uncompressed object streams. Our tool analyzes the file structure and removes these inefficiencies.
By using object streams and removing unmatched cross-reference table entries, we can significantly reduce file size without altering the visual content.
Common Questions
How does the compression work?
Our tool optimizes the internal structure of your PDF. It removes redundant objects, compresses object streams, and cleans up unused data without affecting the visual quality of your document.
Does it compress images?
Currently, this tool focuses on structural optimization and does not re-compress images. This ensures your images retain their original quality while still reducing the overall file size.
Is my PDF uploaded to a server?
No. All compression happens locally in your browser. Your PDF file never leaves your device, ensuring maximum privacy and security.
How much space can I save?
Results vary depending on the PDF. Files with inefficient structures can see significant reductions, while already optimized files may see smaller changes.
Ready to compress your PDF?
No sign-up, no installation. Start optimizing your PDF files now.