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Compress, merge & split PDFs offline. Fast, private, no sign-up needed.
Shrink big PDFs down to a fraction of their size — right on your phone, no internet required. PDF Compressor is a fast, private PDF toolkit that compresses, merges, splits and previews your documents without ever uploading them anywhere. Every single operation — compression, merging, page extraction — runs 100% on your device. Your files never leave your phone. 📉 COMPRESS PDFs • Three one-tap quality presets: Light, Balanced, and Strong • Or target an exact output size in KB/MB — perfect for email attachment limits or form uploads • Typically shrinks scanned documents and image-heavy PDFs by 70–90% • Clear before/after size comparison so you always know exactly what you're getting 🔗 MERGE PDFs • Combine as many PDF files as you want into a single document • Drag files into exactly the order you need before merging • Great for combining scanned pages, invoices, reports, or chapters into one file ✂️ SPLIT & EXTRACT PAGES • Pull a specific page range out of any PDF into its own file • No need to send the whole document when only a few pages matter ⚡ BATCH COMPRESS • Select multiple PDFs at once and compress them all with the same quality setting • Save time when you have a folder full of documents to shrink 👁️ BUILT-IN PDF VIEWER • Preview any PDF page-by-page before and after processing — no need to leave the app or open a separate viewer 🔒 PRIVATE BY DESIGN • No account, no sign-up, no login • No file ever leaves your device — compression, merging and splitting all happen locally • Works completely offline once installed • No hidden data collection on your documents ✅ SIMPLE, FAST, RELIABLE • Clean, modern interface — no clutter, no confusing settings • Recent files list so you can quickly re-open, re-share, or re-download anything you've processed • Save results directly to your device or share instantly to WhatsApp, Gmail, Drive, or any app that accepts PDFs WHO IS THIS FOR? • Students submitting assignments with strict file-size limits • Professionals emailing scanned documents, invoices, or reports • Anyone whose PDF is "too large to upload" on a government, banking, or job-application portal • Anyone who wants to combine multiple PDFs into one, or split one PDF into parts, without installing bulky desktop software WHY CHOOSE PDF COMPRESSOR? Unlike many PDF tools that upload your documents to a server for processing — a real privacy risk for sensitive files like ID cards, contracts, or medical records — PDF Compressor does everything locally. There's nothing to wait for, nothing to trust a third party with, and it works even with no signal or Wi-Fi. Download PDF Compressor now and stop struggling with oversized PDFs.