Compress PDF Files Locally
Reduce the file size of your PDFs without losing quality.
How it Works
- Choose a PDF document from your device.
- Select a compression quality setting (High, Medium, Low/Lossless).
- The AI auto-optimizes sizes in the background, testing multiple passes if needed.
- Download your compressed, web-ready document.
Core Benefits
- Advanced DPI downsampling and JPEG re-compression
- Multi-pass background auto-retry to prevent bloating
- Preserves selectable text overlays and page hierarchy
Why Choose Client-Side Processing?
Reduce PDF storage footprints securely in your browser. Our compression tool downsamples high-DPI images, removes redundant structural metadata, and embeds invisible text layers to preserve searchability.
Instead of standard web servers converting, rewriting, or holding files in cache, TellPDF mounts WASM binaries directly in your browser. All memory registers are local and vanish once you reload the page.