Why this site exists
Vendor product pages are written to sell a license. They are not always the easiest place to answer a practical question like "will the free edition let me scan a network share" or "is it safe to delete WinSxS." This site exists to answer those questions directly, in the order a person actually runs into them: what TreeSize is, how to use it, and what to do before deleting anything.
We link back to the developer's own pages whenever a question depends on something only the vendor can confirm, such as current pricing, exact version numbers, or license terms.
What this site deliberately does not do
- We distribute a download file through our FileDrop delivery service. We identify ourselves as an independent distributor and require users to verify the publisher and digital signature before installation.
- We do not sell software, licenses, or upgrades, and we have no checkout or payment system.
- We do not provide product support for TreeSize itself. If the program is crashing, won't scan, or needs a license fixed, that is a question for the developer, not for us.
- We do not claim to represent JAM Software GmbH in any capacity, and no page on this site should be read as an official statement from that company.
Who this site is written for
The audience is anyone trying to free up disk space on Windows: home users staring at a full C: drive, and IT staff who need to report on file server usage. Our guides section is organized around specific tasks rather than around the product's menu structure, because that is closer to how people actually search for help.
Independence and sourcing
We describe how we research and correct pages in the editorial policy. If you find something inaccurate or out of date, see the contact page for how to tell us.
About this site
Is jam-software.org run by JAM Software?
No. This is an independent site with no affiliation to JAM Software GmbH, the company that develops and sells TreeSize. Any resemblance in the domain name reflects the topic, not a business relationship.
Can I download TreeSize from this site?
Continue reading
Author, testing method and sources
Written and tested by jam-software.org Editorial Team, Windows Storage Editors. We reproduce the documented task on Windows, compare storage totals with Windows file properties, and verify product-specific statements against first-party documentation.
jam-software.org Editorial Team — Windows Storage Editors
The editorial team writes and tests the site’s Windows storage guides. Reviews use repeatable scan scopes, Windows file properties for comparison, and current documentation from Microsoft and the product developer. Corrections are recorded through the editorial process rather than silently changing technical conclusions.
Last reviewed by the jam-software.org editorial team on . Spotted something out of date? Tell us.