Legacy notice!

iText 5 is the previous major version of iText's leading PDF SDK. iText 5 has been EOL, and is no longer developed. Switch your project to iText 7, integrating the latest developments.
Check related iText 7 content!

No you can't. This is also true for the reverse, you can't use an iText 7 license for iText 5.

No you can't. Doing so will throw a LicenseKeyException and you won't be able to use it. This is also true for the reverse, you can't use an iText 7 license for iText 5.

If you do want to have a license for the other version, please contact our sales department.