Why convert ATT to CSV?
A postdata.att file holds field=value pairs from an HTML form submission as plain text. Converting to .csv makes the data easy to open and process in a spreadsheet such as Excel or LibreOffice Calc, where you can filter, sort, or share it. The layout varies by form, so the reformatting step is always manual.
How to convert ATT to CSV
Notepad++ OPEN-SOURCE
Open the .att file in Notepad++, use Find & Replace (Ctrl+H) to replace = with , and & with a newline, add a field,value header row, then File > Save As with a .csv extension.
Excel APP
Open the .att file via Data > From Text/CSV, use the Text to Columns wizard to split on = or &, adjust columns and add headers, then File > Save As > CSV.
LibreOffice Calc FREE
Open the .att file in LibreOffice Calc, use Data > Text to Columns to split on = or &, add headers, then File > Save a Copy > Text CSV.
About these formats
.ATT
Web Form Data File (postdata.att)
An ATT file (most often named postdata.att) is plain text containing the field=value pairs a browser submitted through an HTML form. Open it in any text editor - Notepad, Notepad++, or…
Open .ATT details →
.CSV
Comma-Separated Values
A CSV file stores tabular data as plain text - one row per line, values separated by commas (or semicolons in European locales). Any spreadsheet opens it: Excel, Google Sheets, LibreOffice…
Open .CSV details →Quality & what to watch
- A
postdata.attfile has no fixed structure: the delimiter between pairs may be&(URL-encoded) or a newline - check the actual content before deciding how to split it. - No automated ATT-to-CSV converter exists because each file's structure depends on the specific HTML form that produced it.
- URL-encoded characters (e.g.,
%20for a space) may appear in values; decode them before saving as CSV to get readable data.
Frequently asked questions
Why is there no automated ATT-to-CSV converter?
postdata.att structure depends on the HTML form that produced it; without a consistent schema, automated conversion is not practical.What delimiter should I use when splitting the file?
& between pairs and = between field name and value, but the exact format varies.
