Compress a PDF without ruining its text

What weighs in a PDF is the images: a 600 dpi scan nobody asked to keep that large. We resize them and re-encode them, and nothing else.

What this tool does

Text stays text: nothing is ever rasterized, so the document remains selectable and searchable.
Small images (logos, letterheads, signatures) are left alone.
The report says what was left alone, and why: transparency, CMYK, JPEG 2000, fax.

What it does not do: A PDF without images will not get lighter: its text is already compressed, and nothing here turns text into images to fake a saving.

Nothing is uploaded. Cut your network connection once this page has loaded: the tool keeps working. How to check it yourself.

The other tools

Merge PDFs: Several files, one document, in the order you decide.
Organize pages: Reorder, rotate, delete, duplicate: the whole plan.
Extract pages: Pick pages, take them out into a document of their own.
Delete pages: Remove pages while looking at them; they are not left under the file you get.