Compress PDF
Reduce PDF file size with Low / Medium / High compression while keeping readable quality.
Drag & drop files here
or click to browse · choose a compression level below
Compressing PDF…
Ready to download
⚡ How to Use Compress PDF
Select or Drop Files
Choose your input document from your device or drag and drop it into the upload box above.
Instant Processing
Our optimized conversion engine processes your files with sub-pixel typographic layout precision.
Download Converted File
Save your converted output instantly with no watermarks, quality degradation, or account limits.
Why Choose Cluster AI for Compress PDF?
No artificial page limits, paywalls, or forced account registration.
High-fidelity rendering preserves fonts, vector lines, tables, and images.
Uploaded files are purged automatically from our servers to protect your privacy.
Works smoothly on Windows, Mac, Linux, iOS, Android, and Chromebooks.
Frequently Asked Questions
How long does Compress PDF take? ▼
Most conversions complete in less than 2 to 5 seconds depending on file size and page count.
Can I use Compress PDF on my smartphone? ▼
Yes. The tool is fully responsive and functions seamlessly on mobile Safari, Chrome, Firefox, and Edge.