Data Tools
Quick converters for the data you copy between spreadsheets, apps and code. Turn CSV into JSON and back, YAML and XML into JSON, Markdown into HTML, and Excel sheets into CSV. View a CSV as a sortable table, format and validate JSON, remove duplicate lines from a list, encode or decode Base64, and see exactly what changed between two texts. Results update as you type, and every tool is free.
Files never leave your device.
All data tools (11)
- CSV to JSON.csv → .jsonTurn spreadsheet rows into JSON for code, APIs and config files.
- JSON to CSV.json → .csvTurn JSON into a spreadsheet you can open in Excel or Google Sheets.
- JSON Formatter.jsonMake JSON readable, compact it, and find errors fast.
- Excel to CSV.xlsx → .csvExport every sheet of an Excel workbook to CSV, without Excel.
- Base64 Encode & DecodeConvert text or files to Base64, and back again.
- Text DiffSee exactly what changed between two versions of a text.
- YAML to JSON.yaml → .jsonConvert YAML config files to JSON, and back again, as you type.
- XML to JSON.xml → .jsonTurn XML data, feeds and exports into JSON you can use in code.
- Markdown to HTML.markdown → .htmlTurn Markdown into HTML with a live preview.
- Remove Duplicate LinesClean up lists by removing repeated lines instantly.
- CSV Viewer.csvOpen a CSV file as a clean, sortable table, without Excel.
Questions
Are the data tools free?
Yes. They are free to use, with no sign-up, no watermark and no daily limit.
Do I need to install anything?
No. Every tool works on the website, so there’s nothing to download or install.
Do they work on a phone?
Yes. They work in current mobile browsers on iPhone and Android, as well as on desktop. Very large files may be slow on phones because of memory limits.
More Free File Tools
- Image ConverterConvert, resize, crop and rotate images, and view or remove their metadata.
- PDF ToolsMerge, split, sign, crop, protect and convert PDFs, extract text and images, and compare versions.
- Audio ConverterConvert to MP3, WAV or OGG, and trim, join or change the volume of recordings.
- Compress FilesMake images, PDFs, audio and GIFs smaller without uploading them.
- File ToolsZip, unzip and view archives, encrypt files, find duplicates, checksums, split, join and rename.
- Blank & Dummy FilesEmpty documents, images, audio, archives, databases, 3D models, printable paper and exact-size test files.