Features
Features: seven things, in the order you meet them.
Or skip all of it — the button up top is the real thing, and it takes a paste.
01
Your text stays.
Paste, and it's exactly where you put it — editable, for the whole session. The tree arrives beside it when you ask, and folds away when you want room.
02
Broken input explains itself.
Dots on the lines, plain sentences, one button. Nothing changes until you say so, and undo is right there when it does. Or fix it yourself — it re-reads as you type.
How fixing works →03
Logs and CSVs ask once, beside your text.
Separator, header row, log pattern — asked with a live preview next to the lines you pasted. Never in a dialog over them. Never twice.
How a file is read →04
Every row carries its own tools.
Hover a row: Copy and Focus, right after the text. A value that holds packed data always shows Unpack — a finding about your data, not a feature you have to know about.
Unpacking, in the docs →05
Compare by structure.
Two files, only the real differences. Reordered keys aren't a change. A log is matched by record, not by line order.
Comparing, in the docs →06
Wears your editor's colors.
Follows your system between light and dark. Or One Dark, Dracula, Catppuccin — the three most-installed editor themes, matched to the hex.
07
Nothing leaves your browser.
Reading, fixing, comparing — all in your tab. Open the network panel and watch it stay empty.
The privacy note →VS Code
Or lives in your editor.
The same engine as an extension: named fixes on the lightbulb and in the Problems panel, CSV and logs read as records, Compare by structure in the diff editor, packed values opened in place. Nothing you open is uploaded.
14 days of everything · Free forever after · Pro is a one-time $19 licence
the same tools for every format
or start from the job
Fix invalid JSONPython dict to JSONUnstringify JSONNDJSON viewerLog parserCSV to JSONJSON to Markdown tableJSON to TypeScriptJSON to JSON SchemaJSON to Zod schemaJSON to Pydantic modelJSON to Go structJSONPath testerJSON formatter and validatorJSON to NDJSONNDJSON to JSONNDJSON to CSVMarkdown table to CSVCSV to Markdown tableTSV to JSONJSONL validator