CSV Preview
Preview CSV in a sortable table
CSV Preview: Preview CSV in a sortable table. A free, browser-based tool from DevToolbox that runs entirely on your own device: no upload, no account, no tracking.
About the CSV Preview
Paste CSV or TSV and read it as a table, with quoted fields and embedded delimiters handled properly, so you can check a file before it goes into an import.
Generation uses the browser's cryptographic random source where randomness matters, so values are suitable for identifiers and secrets rather than being predictable pseudo-random output.
What you can do with it
- CSV viewer
- CSV table
- TSV viewer
- CSV file reader
- CSV online viewer
- Spreadsheet viewer
How to use it
- Set how much you want and any options that apply.
- Generate, and the result appears immediately.
- Regenerate as many times as you like; nothing is stored or reused.
- Copy the output when you are happy with it.
Questions
- How are quoted fields handled?
- Fields wrapped in double quotes may contain the delimiter and newlines, and a doubled quote inside them is treated as one literal quote, following RFC 4180.
- Is my data uploaded anywhere?
- No. The tool is JavaScript that runs in the tab you already have open, and DevToolbox has no backend to send anything to. You can open the network tab and watch: after the page and its script load, nothing is sent while you work.
- Does it work offline?
- Once the page has loaded, yes. The tool needs no network access to do its job, so it keeps working if your connection drops. Reloading the page does need the network unless your browser has it cached.
Related tools
The CSV Preview sits in Data & Productivity, one of the 90 tools on DevToolbox.