Professional PDF Compressor - Exact Target Size
Now compress PDFs to your desired file size! Our tool automatically adjusts image quality to hit your target.
Exact Target Size
Get output size close to your desired value
Smart Quality Adjustment
Reduces image quality only as needed
Fast Iterative Compression
Binary search finds optimal quality in seconds
100% Private
All processing locally, no server upload
Works Anywhere
Desktop, tablet, mobile
Completely Free
No signup, no watermarks
✨ Why Our PDF Compressor Stands Out
Unlike server‑based tools, our compressor works entirely inside your browser using pdf.js and binary search optimization. Your PDF is rendered, quality adjusted to hit your exact target size, and embedded into a new PDF – all without uploading anything.
- ✅ Zero data transfer – 100% local processing
- ✅ Smart quality adjustment – automatically finds best JPEG quality
- ✅ Exact target size – as close as possible to your desired KB/MB
- ✅ Instant preview – see original vs compressed size instantly
📖 How to Compress PDF to Exact Size
Upload PDF
Drag & drop or click to select PDF (Max 5MB)
Enter Target Size
Choose KB or MB and enter desired output size (must be smaller than original)
Click & Download
Press compress – tool automatically adjusts quality to hit target
❓ Frequently Asked Questions
💡 Expert Tips for Best Results
For most accurate target size compression, use single‑page PDFs with high‑resolution images. Our binary search algorithm quickly finds optimal JPEG quality. For text‑heavy PDFs, compression may be limited.
- 🎯 Max file size 5MB ensures ultra‑fast client‑side processing.
- 📏 Target size validation – must be smaller than original.
- 🖼️ JPEG quality adjustment – reduces quality only as needed.
- ⚡ Binary search – finds perfect quality in under 10 iterations.