Software & Apps File Types What Is an ANB File? How to open, edit, & convert ANB files Share Pin Email Print ANB Files. File Types Design Cryptocurrency MS Office Windows Linux Google Drive Apps File Types Backup & Utilities View More By Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated October 15, 2019 A file with the ANB file extension is an Analyst's Notebook Analytical Chart file. These files are built from the IBM i2 Analyst's Notebook program and contain a visual representation of how different pieces of information, like emails, images, reports, etc., are associated with one another. You can read more about these types of ANB files at the IBM Knowledge Center. Other ANB files you find have nothing at all to do with IBM's software and are likely part of a video game, Shovel Knight being one example. This type of ANB file is typically found stored within an archive file with either the .PAK or .ZIP file extension. How to Open an ANB File ANB files are created using IBM i2 Analyst's Notebook but can be opened for free with the IBM i2 Chart Reader program. There are some questions and links you must click through before finding the actual download link for the most recent version of i2 Chart Reader, but they're all self-explanatory. You'll also need to sign up for a free IBM user ID if you don't already have one. Try this i2 Chart Reader download if the one from IBM's site doesn't work. You should be able to open ANB files used in a video game with a file extractor program, like the free 7-Zip tool, given that the file is contained in an archive. However, I don't think you can actually use these files with the game unless they're placed in the correct folders where the game can reach them. In other words, there's probably no way to manually open these types of files in the game. If an ANB file doesn't open in either of these programs, it most likely means that it's an entirely different format. One thing you can do is open the ANB file in a free text editor and see if you can pick out some legible text that may point you in the direction of the program that created your file. If you still can't open your ANB file even after trying these suggestions, be sure you're not confusing it with a file of a similarly named extension, like an MNB or XNB file. If you find that an application on your PC does try to open the SRF file but it's the wrong application or if you would rather have another installed program open SRF files you can change the default program for a specific file extension. How to Convert an ANB File If any program can convert or export an ANB file to a different format, we suspect it's IBM's own i2 Analyst's Notebook software, but we haven't verified that. We're unaware of any file converters that can save an ANB file used in video games to any other format. With this format, specifically, we assume there's no reason for it to exist in any other format anyway.