Observed arrival · 2026-09-09
FlatFilePro, for files where every character has a job
A browser-based converter that turns CSV, JSON, or delimited text into fixed-width files, and positional files back into CSV.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
FlatFilePro performs both directions of the conversion locally in the browser. Its builder exposes field widths, padding, constants, delimiters, line endings, and multiple row layouts, then previews the first 20 records before download. The reverse workflow accepts TXT or DAT records up to 2 MB and can suggest columns from sample data. Layouts can be saved as .ffspec files, while output is constrained to ASCII without a BOM.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue