California Department of Transportation

DRISI-HQ: File Help

Information About Different File Formats

(and how to download software to read them).


The State of California makes no warranty of any kind, express or implied, with respect to the software products which are the subject of this Page. User assumes all risk and liability for loss, damage, claims or expense resulting from use, possession or resale of any software products furnished by any companies linked to on this website.

HTML File Format (.htm, .html, .shtml)

HTML Format LogoClick to expand and collapse panel
HTML (.htm or .html) is the standard file format (markup language) for web pages. A standard web browser will read and display the page. HTML is the best file choice for quickly viewing a file online as it loads more quickly than PDF and WORD, and no additional software is needed. HTML files are not usually the best choice to print content being viewed on the screen; however, you may copy and paste from most HTML pages, and you may do a screen copy of any full page (shift/Print Screen/paste). For ease of printing, look for a PDF or WORD version.

Microsoft WORD File Format (.doc, .docx)

Microsoft Word LogoClick to expand and collapse panel
Microsoft Word Document format (.doc, .docx) is the file format for many documents and reports on our site written in Microsoft Word. View, print, and copy Word documents, even if you don't have Word installed with the free Word Viewer from Microsoft. This download is a replacement for Word Viewer 2003 and all previous Word Viewer versions. Microsoft Office Word Viewer Download.

Microsoft Excel Format (.xls, .xlsx, .xlt, or .xltx)

Microsoft Excel LogoClick to expand and collapse panel
Excel Spreadsheet format (.xls, .xlsx .xlt, or .xltx) With Excel Viewer, you can open, view, and print Excel files, even if you don't have Excel installed. You may also copy data from Excel Viewer to another program. However, you cannot edit data, save a workbook, or create a new workbook. This download is a replacement for Excel Viewer 97 and all previous Excel Viewer versions. To download the free viewer, click here: Get Excel Viewer.

Microsoft PowerPoint Format(.PPT, .PPTX)

PowerPoint LogoClick to expand and collapse panel
PowerPoint is a presentation software that we use on our websites to post slide shows. Microsoft Office PowerPoint 2010 Viewer lets you view full-featured presentations created in PowerPoint 97 and later versions, without owning the software. The PowerPoint 2010 Viewer also supports opening password-protected Microsoft PowerPoint presentations. You can view and print presentations, but you will need a complete PowerPoint version of the software to do any editing. To download the free viewer, click on: Get PowerPoint Veiwer for 1997 Version and Later.

Adobe Acrobat (.PDF) Reader File Format

Get Acrobat ReaderClick to expand and collapse panel
The PDF file format is a good choice for printing reports and other documents, viewing graphically intensive documents, and keeping documents in their original format. View and interact with PDF files that contain a wide variety of content types, including drawings, email messages, spreadsheets, videos, and other multimedia elements. PDF is a very common format for viewing documents on the Internet, so installing the Acrobat Reader will be useful on other websites as well. To download the latest version of Acrobat Reader or to find out more about the product, Click here to get Adobe Reader.

Adobe Flash Format (.fla., .swf)

Microsoft Word LogoClick to expand and collapse panel
Adobe® Flash® Player is a cross-platform browser-based application that allows viewing of interactive applications, enhanced content, and videos across many screens and browsers. Flash Player is optimized for high performance on mobile screens and is used to give the viewer a more immersive web experience. To get Flash Player, click on: Get Flash Player.

Zip File Formats

7zip TrademarkClick to expand and collapse panel
Files archived in a Zip file are compressed to save space. We use this format throughout our website for very large files so they may be downloaded more quickly. Many files on the internet are in a compressed format. Typically, these files will have a .zip extension. Zipped files must be unzipped (or decompressed) before viewing. Besides the popular ZIP format, there are many other compression formats, such as Stuffit (.sit) files (for Mac users) and uuencoded (.uue), BinHex (.hqx), ARC (.arc), Arj (.arj), and gzip (.gz) formats, etc. One of the most reliable and efficient compression utilities is 7zip. To get 7zip, click on: Get 7zip .

Other File Formats (.gif, .jpg, .jpeg, .tiff)

Gimp Trade MarkClick to expand and collapse panel
OTHER FILE FORMATS: TIFF, GIF, JPG (or JPEG), are graphic file formats (or pictures). One good open source application for viewing and editing graphic files is Gimp. Gimp may be downloaded at CNET