EXHIBIT 23.1
INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM'S CONSENT
We consent to the incorporation by reference in the Registration Statements of Bridgeline Digital, Inc. on Form S-8 (Nos. 333-213185, 333-208891, 333-170819, 333-188854, 333-181677, 333-181678, 333-234771, 333-264937, 333-276357 and 333-290591) and Form S-3 (No. 333-285176) of our report dated December 18, 2025, and with respect to our audit of the consolidated financial statements of Bridgeline Digital, Inc. as of September 30, 2025 and 2024 and for the years then ended, which report is included in this Annual Report on Form 10-K of Bridgeline Digital, Inc. for the year ended September 30, 2025.
/s/ PKF O’Connor Davies, LLP
New York, New York