HeroTools / Text & Code
Local · Private · Free

CSV Viewer & Editor

Open a CSV, then sort, search and edit it like a spreadsheet — entirely on your device. Export clean CSV or JSON when you’re done.

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Drop a .csv file here
or click to browse — also .tsv / .txt
🔒 Files never leave your browser
or
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A spreadsheet that never phones home

Most online CSV editors upload your file to a server. This one parses and edits everything in your browser — quoted fields, commas and line-breaks inside quotes, and tab or semicolon delimiters are all detected automatically. Edit inline, sort by any column, filter rows, then export tidy CSV or JSON.

About CSV Viewer & Editor

CSV Viewer & Editor is a free, private text & code tool that runs entirely in your web browser. Open a CSV as a sortable, filterable, editable table — export to CSV/JSON. Because everything happens locally on your device, your files and data are never uploaded to a server, there is no sign-up or installation required, and it keeps working offline. It is handy for csv, viewer, editor, spreadsheet. Like every HeroTool by Digital Heroes, CSV Viewer & Editor is 100% free with no limits.

How to use CSV Viewer & Editor

  1. Open CSV Viewer & Editor — it runs entirely in your browser, with no signup.
  2. Paste or type your text or code into the editor.
  3. Adjust the options to match exactly what you need.
  4. Copy or download your result — it is free, and your data stays on your device.

Frequently asked questions

Is CSV Viewer & Editor free?

Yes — CSV Viewer & Editor is completely free for everyone. No sign-up, no account and no usage limits.

Is it private? Are my files uploaded anywhere?

No. CSV Viewer & Editor runs entirely in your browser on your own device, so your data never leaves your computer and nothing is uploaded to a server.

Does it work offline?

Yes. HeroTools is a Progressive Web App — once the page has loaded it keeps working offline, and you can install it as an app from your browser.

Do I need to install anything or create an account?

No. Just open the page and start using it. Installing it as an app is optional and only adds offline convenience.

What does CSV Viewer & Editor do?

Open a CSV as a sortable, filterable, editable table — export to CSV/JSON.

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