Data Conversion Tools
Turn messy text and spreadsheet exports into clean, usable data. Convert CSV to JSON, sort and deduplicate lists, and pull email addresses and links out of any block of text.
CSV to JSON Converter
Turn CSV or spreadsheet data into a clean JSON array.
Open toolList Sorter
Alphabetize lists, sort by length and remove duplicate lines.
Open toolEmail & URL Extractor
Pull every email address or link out of any text.
Open toolCommon data clean-up jobs
- A pasted email thread full of addresses: extract them with the Email & URL Extractor, then sort and deduplicate with the List Sorter.
- A spreadsheet that needs to feed an app or API: export it as CSV and convert it with the CSV to JSON Converter.
- A keyword or product list with repeats: remove duplicates and alphabetise it with the List Sorter.
- A list that needs quotes or commas for code: finish it with Add Prefix and Suffix.
Handle personal data responsibly
Customer lists and contact details are personal data under laws such as the GDPR. These tools process everything on your own device and store nothing, but what you do with the results is your responsibility: only email people who have agreed to hear from you, and keep exported files secure.
Frequently asked questions
Save the sheet as CSV (UTF-8) first, then paste or upload it into the CSV to JSON Converter.
No fixed limit. Tens of thousands of rows or lines are processed quickly in a modern browser.
No. All processing happens locally and nothing is stored.