What is a CHART file?
A .CHART file can be one of several different formats. The most common use is a web chart settings file for the Tridium Niagara Framework, saved in the JSON format. Another frequent use is for rhythm games like Clone Hero. In these games, the .CHART file stores the notes, tempo, and timing of a song using plain text (UTF-8).
Other software also uses this extension. Ursa Software programs, like MacStitch and WinStitch, use .CHART files for cross-stitch embroidery patterns. Additionally, AmiBroker uses the extension for financial chart layout files saved in XML.
How to open CHART files?
If the file is for a rhythm game, you can load it into Clone Hero or edit it using Moonscraper Chart Editor. If it is a web chart settings file, it requires the Niagara Framework. Because many of these files are simple text or data, you can also inspect them using editors like Notepad++ or Visual Studio Code.
Best practices and troubleshooting
If you do not know the source of your .CHART file, look at the text contents. A rhythm game file will usually have sections named `Song]` and `[SyncTrack]`. A web settings file will show structured data brackets. Do not delete these files if they are in a game folder, because the game will lose the song data. If .CHARTviewer.online/ has multiple possible meanings, we recommend using [chart to identify the actual format of your file.
Summary
viewer.online/chart analyzes .CHART files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. Because .CHART files use the known JSON format, viewer.online/chart can safely open and display them online, eliminating compatibility problems.