03
REBUILD
pdf-lib, locally
The document rebuilds in your browser tab. Nothing leaves your machine. No upload, no server queue, no compression-as-a-service quota.
What it actually does
02
RE-ENCODE
JPEG at target DPI
Embedded images downsample to your DPI choice (web 72, screen 150, print 300) and re-encode to JPEG via mozjpeg. Vector and text content pass through untouched.
04
KEEP
Original untouched
The compressed copy saves to your downloads. The source PDF stays exactly where you dropped it from. Nothing is logged, nothing persists.
How it works
- Open morph.cool in any modern browser. No install, no account, no card.
- Drop a PDF — or a folder of PDFs — onto the drop zone. No 100 MB cap; your machine's memory is the limit.
- Pick a target: web (72 DPI, smallest), screen (150 DPI, balanced), or print (300 DPI, archival).
- Watch Morph re-encode embedded images and rebuild the file. Text, vectors, form fields, signatures pass through.
- Download the smaller copy. Original stays on your machine, untouched.
0Bytes uploaded
0Typical Δ size
0Text preserved
Why PDF compressors feel like a tax
The freemium PDF sites democratized PDF tools and then locked the gate at the same place: ~100 MB free upload cap, two operations per hour, a queue when traffic is high, ads on the wait page, and every byte still uploaded to their servers. The rest run the same dance under different brands. The pattern is identical: server-uploads as the business model, file-size caps as the upgrade lever, and your document as the toll. Morph runs pdf-lib in your browser and removes every part of that loop. Same encoder math (mozjpeg-equivalent), no upload, no cap, no quota.
Where the enterprise suite still wins
The enterprise PDF suites still have the deepest audit trail, OCR-on-scan accuracy, and PDF/A archival validation in the industry — if you're working in a regulated environment that requires documented PDF/A-2 conformance or PDF/UA accessibility tagging, that's a different product than this one. Morph is the daily-driver browser version for everyone else who just wants the file under 10 MB so it'll attach to the email.
Frequently asked
How is this different from the desktop PDF suite?
Morph runs pdf-lib locally in your browser tab — no upload, no licence, no cloud sign-in.
How is this different from the freemium PDF sites?
The freemium PDF sites cap free uploads at roughly 100 MB per file and limit free users to two operations per hour before locking the page behind a paywall. All of them upload your PDF to their server. Morph runs locally — no upload, no file-size cap beyond your machine's memory, no hourly quota.
How much smaller will my PDF be?
Depends on the source. Image-heavy PDFs (scanned contracts, receipts photographed with a phone) often shrink 60-90 percent at the screen-DPI setting. Text-and-vector PDFs (designed reports, ebooks) only shrink 5-15 percent because they were already compact.
Will my text and signatures still work?
Yes. Morph only touches embedded raster images — text, vector shapes, form fields, hyperlinks, and embedded fonts pass through unchanged. Cryptographic signatures are not modified, so the signature remains valid.
Are PDFs really safe?
Yes. The original PDF stays where you dropped it from — Morph never modifies the source file. The compressed copy is downloaded to your machine. Nothing is uploaded, nothing is logged, nothing persists once you close the tab.
Can I compress a folder of PDFs?
Yes — drop a folder, drop fifty files. The free tier has no batch limit. The only constraint is your device's available memory.
Nothing leaves your device · Free for what you make, credits for what we run