"Download History Cleaner" is the easiest way to clear your browser download history for a specified period. You can define the custom period on the options page. Also, you can define the area (zone) in which you want the data to be cleared.

For a more comprehensive cleaner try my eCleaner
https://addons.mozilla.org/firefox/addon/ecleaner-forget-button/

Using this extension it is possible to delete the download history of three different zones:
1. Normal websites,
2. Protected websites (not supported in Firefox yet),
3. Extension zone (not supported in Firefox yet)

Definitions:
-> Extensions zone: Extensions and packaged applications a user has installed (not yet supported in Firefox)
-> Protected websites zone: Websites that have been installed as hosted applications (not yet supported in Firefox)

For bug reports please visit:
https://github.com/andy-portmen/ecleaner

For FAQs please visit:
https://add0n.com/ecleaner.html?from=downloads-cleaner

Install

• License: Mozilla Public License 2.0
• Weekly downloads: 3
• Average daily users: 82
• Rating: 4.0909/5 of 11 ratings
• Created: 2017-07-31 12:19:28
• Last updated: 2020-06-02 05:30:13
• Homepage: https://add0n.com/ecleaner.html?from=downloads-cleaner
• Support site and email
• Donate
• Orig: https://addons.mozilla.org/en-US/firefox/addon/download-history-cleaner/
• API: {baf67409-05cf-40ff-b041-4dbf02279aa1}