Smallpdf
A preset starting point: Basic produced a 441,780-byte file in our historical sample.
Keep in mind: The smallest result in this sample is not a general quality or compression ranking.
Explore Smallpdf ↗Make a scanned PDF small enough to send
Compare three compression routes using the same six-page scan, then check the saved result.
How to choose
Choose a file-size target first. Start with a preset for a quick pass, or use resolution and quality controls when you need to adjust the result.
These are online upload workflows. Results below come from one synthetic file tested on 5 October 2026, with saved-file checks on 9 October. They do not predict the size of your file or establish today's free limits. For sensitive documents, read the guide's local-processing options first.
iLovePDF
Another preset route: Recommended produced 496,536 bytes from the same input.
Keep in mind: Inspect small print and every page; the preset cannot promise a particular target size.
Explore iLovePDF ↗PDF24 Tools
For adjustable controls: 144 DPI and 75% image quality produced 626,429 bytes in this sample.
Keep in mind: This was the online compressor. PDF24 Creator is a separate Windows application and was not tested.
Explore PDF24 Tools ↗Follow the evidence
Collection edited . Individual test dates and limits are shown above. Explore another collection ↗