Compress PDF makes a document small enough to email or upload to a portal that rejects anything over a few megabytes. It picks its method by looking at the file first: text-heavy documents get a lossless structural optimisation, which keeps the text perfectly crisp, while image-heavy documents are recompressed where the actual weight is.
That distinction matters. Tools that rasterise everything make text documents blurry and often larger, not smaller. Here, a contract stays sharp and a folder of scans gets genuinely lighter.
How to use
Upload the PDF that is too large.
Run it — the tool analyses the pages and chooses lossless optimisation or image recompression accordingly.
Check the new size and download; if it is still too big, try the grayscale option for scans.
FAQ
How much smaller will my file get?
It depends entirely on what is inside. Scanned or photo-heavy PDFs often shrink dramatically; a text-only PDF is already efficient and may only lose a little weight.
Will my text get blurry?
Not for text-heavy documents — those are optimised losslessly and the text stays exactly as sharp as the original.
Is the file uploaded to a server?
No. Analysis and compression both run in your browser, which is why it works for confidential contracts and medical documents.
The result is barely smaller. What now?
That usually means the PDF was already well optimised. For scans, the grayscale option removes colour information and typically saves a lot more.