✨ Why use our PDF Compressor?
Optimize your PDF documents without losing readability. Our compressor uses advanced recompression techniques and metadata stripping to shrink file size while preserving text, vector graphics, and layout integrity. No upload, no queues — everything happens inside your browser using the industry-standard pdf-lib engine.
⚡ Blazing fast
Local processing means instant compression — results in seconds.
🔒 Total privacy
Your PDF never leaves your computer. Perfect for contracts, invoices, and medical records.
📉 Real compression
Re-saves PDF with efficient stream compression + optional metadata removal. Reduce email attachments & storage space.
🔄 No quality loss
We don't downsample images aggressively; keep sharp text and graphics.
How it works: 1. Upload PDF. 2. (Optional) Enable "Remove metadata" to strip hidden information. 3. Click Compress. 4. Download the optimized PDF. The tool automatically calculates size reduction. All operations are client-side, so your files are fully confidential.
❓ Frequently Asked Questions
🔹 Is my data safe when compressing?
Absolutely. The entire compression process runs locally using JavaScript in your browser. No file is uploaded to any server, and we never store or transmit your document. Your privacy is 100% guaranteed.
🔹 How much can I reduce PDF size?
Reduction varies based on original content. Heavily image-based PDFs may see less reduction, while text-heavy or poorly optimized PDFs can shrink 50–80%. Our method removes redundant metadata and applies efficient compression.
🔹 What does "Remove metadata" do?
It strips hidden data like author name, creation tool, timestamps, and custom properties. This not only improves privacy but often reduces file size by a few KB to several MB.
🔹 Does compression affect image or text quality?
No, we preserve original image and font rendering. Our algorithm uses lossless recompression strategies provided by PDF‑Lib, ensuring the visual fidelity remains identical.
🔹 Any file size limit?
There's no enforced limit, but very large PDFs (300+ pages or >100 MB) may take longer due to browser memory constraints. For typical documents, performance is excellent.
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