The Seattle Post-Intelligencer will move its content completely to the Web after the paper's parent company, Hearst Corp., failed to find a buyer for the 146 year-old paper, the Associated Press reported Tuesday.

The last print edition ran on Monday with the headline "You've meant the world to us." The edition was to be delivered accompanied by 20 to 24 pages of photos documenting the paper's history.

The P-I's transition to an online-only format follows a similar move by the Christian Science Monitor last year and calls into question how the newspaper will sustain itself based on marginal online revenue.

The new P-I Web site will likely be a pared down version of the print edition, with heavy reliance on blogs and links to other news sites. However, the online edition will include some of the paper's well loved reporters, including some columnists and Pulitzer Prize-winning cartoonist David Horsey, the AP reported in an article posted by NOLA.com.

The P-I, which had a staff of 181, will move 20 employees into the newsroom for the new edition and another 20 to sell ads.

The Seattle Times, which remains the only mainstream daily in the city, plans to deliver a copy of its paper to every P-I subscriber on Wednesday morning.