“Captain, We found PDFs!”

From http://www.lostintechnology.com

Having trouble finding the right document online? Found a great document, but you really wanted it in PDF format?  Today,  we present you with four PDF search engines which allow you to search, preview and download almost any file in PDF format.

Search PDF

Search PDF is a simple PDF search tool that helps you find and download ebooks, tutorials and any documents in PDF format. You can either search from the website directly or use the provided search extension and add it to your Firefox search bar. Each result can be opened up with Scribd’s iPaper viewer, which is a handy way to glance over a multi-page document without having to launch anything on your system.

Features:

• Find and download tutorials, ebooks and other types of PDF files online.
• Save downloaded documents as PDF.
• View search results with Scribd’s iPaper viewer.
• No sign-up or registration needed.

PDFGeni

PDFgeni is a dedicated pdf search engine for PDF ebooks, sheets, forms and documents. You can either search for PDF files directly on the website directly or download the Firefox search plugin provided. It also provides an iPhone Edition of the same web application.

Key Features:

• Download and save books and documents in PDF format.
• Preview PDF files online.
• Free and no registration required.

PDFse

PDFse is an ebook and PDF search engine powered by the Google Search API. You can search for documents, reports and almost any information stored in PDF format and download them onto your system. It even displays the most searched documents on PDFse as a tag cloud.

Features:

• PDF search engine powered by the Google search API
• Search and download any files in PDF format.
• A tag cloud displays the most searched documents on the homepage.

Data-Sheet

Data-Sheet is a similar PDF search engine, where in you can search for documents, ebooks, datasheets, manuals and download them. It displays the recent and most popular datasheet searches. It also provides you with relevant images to the search query made.

Key Features include:

• Provides recent and most popular datasheet searches.
• Displays relevant images to the search query made.