Lotus Convert
Shrink a PDF down to a smaller file size.
Drop your PDF in and your browser will clear out unnecessary data and repack it more efficiently. It works best on PDFs with a lot of fonts or metadata. If yours is mostly scanned images, don't expect a huge difference.
How this actually works
Compressing repackages the PDF's internal structure — clears out redundant data, consolidates things — using a library that runs right in your browser. Works best on PDFs full of text and fonts. If yours is mostly scanned images, don't expect much of a difference, since we're not touching the images themselves.
About Lotus Convert
This is a small set of tools built by one woman who got tired of "free" converters that make you upload a file just to change its format. Everything here runs in your own browser instead, so there's no server in the middle holding your files. No huge company behind it, no investors, just something built to work the way a tool like this should.
The site is supported by ads (you'll see them on the page) rather than accounts or subscriptions — that's what keeps every tool free with no file limits and no watermark. See the privacy policy for details on how those ads work.