Shrink a PDF by recompressing the images inside it — your text stays sharp and selectable. Best on scans and photo-heavy documents, and your file never leaves your device.
Shrinks the images inside it. Text stays sharp and selectable.
Add one PDF. It's read on your device — never uploaded to a server.
Smallest, Balanced, or Best quality. Balanced suits most scans and photo-heavy documents.
See exactly how much smaller it got, then save the compressed PDF.
No. The file is read and recompressed entirely in your browser — nothing is sent to a server. It keeps working offline once the page has loaded.
No. Only the images inside the PDF are recompressed. Text and vector graphics are never re-rendered, so they stay perfectly sharp and still selectable and searchable afterwards.
Because almost all the weight in a PDF is its images. A scanned document, a screenshot export, or a photo-heavy brochure can shrink dramatically — often 50% or more. A text-only document has very little to remove, so it may come back nearly the same size, and the tool then leaves your original as it is.
Anything it can't rebuild faithfully is left exactly as it was: image masks, CMYK or indexed-palette images, and less common formats like JPEG 2000, CCITT, or JBIG2. Photos, colour graphics, and images with soft transparency are all handled — including their transparency, which is preserved. Either way a compressed file is never corrupted; the worst case is simply no savings.
Not while it's locked. A PDF that needs a password just to open can't be read — remove the password first, then compress the unlocked copy.
No account, no watermark, and no fixed limit. Since everything runs on your device, very large PDFs are bounded only by your computer's memory.