PDFfit runs a full PDF engine (Ghostscript, compiled to WebAssembly) inside your browser tab. Drop a PDF, pick a target, and it rewrites the file locally — downsampling images and rebuilding the document the same way desktop tools do.
Most "compress PDF" sites upload your document to their servers. PDFfit never does: there is no upload, no queue, and nothing to delete afterwards. Turn off your network after the page loads — it still works.
Yes. Compressing one file at a time is free, forever, with no limits per day.
A one-time purchase unlocks batch compression and the Max preset. No subscription.
Scanned and image-heavy PDFs typically shrink 60–90%. Text-only PDFs are often already tight — if we can't make it smaller, you keep your original.
Yes — same tool, one click from your toolbar, still fully offline.