FileGizmo — for CSV

Free CSV & data tools

Convert, clean, and restructure CSV, JSON, Excel, XML, and other structured data without sending a file to a server. Every tool works locally in your browser.

19 available now19 tools in this cluster0 files uploaded

Focused utilities

Choose a CSV or data tool

Choose a focused task and start immediately. Every listed tool follows the same private, browser-based workflow.

Address to coordinatesBatch geocode CSV addresses with your own API key. CSV to ExcelTurn CSV data into an Excel-ready workbook. CSV to HTML tableCreate safe HTML table markup from CSV data. CSV to JSONTurn CSV rows into structured JSON on your device. CSV to Markdown tableConvert CSV into a Markdown table on your device. CSV to SQLGenerate portable SQL INSERT statements privately. CSV and XML converterConvert between CSV and record-based XML locally. Remove CSV duplicatesClean repeated rows from CSV data. Excel to CSVExport one Excel worksheet to CSV on your device. CSV column extractorKeep only the columns you need from a CSV file. Filter CSV rowsFilter CSV rows with clear column conditions. Find and replace in CSVReplace CSV text while preserving table structure. Flatten nested JSONFlatten nested JSON into rows on your device. JSON to CSVTurn JSON arrays and objects into a CSV file. JSON to ExcelTurn JSON records into a private Excel workbook. JSON and YAML converterConvert JSON and YAML locally without data uploads. Merge CSVCombine matching CSV files into one clean dataset. Sort CSVSort a CSV table locally with stable ordering. Split CSVDivide a large CSV into manageable files.

Private by architecture

Keep sensitive datasets on your device

Exports often contain customer records, inventory, research, financial details, or internal identifiers. FileGizmo processes that information inside your browser instead of transferring it to a remote conversion service. You can inspect the Network tab while a tool runs: the file itself never leaves your device. That makes routine cleanup practical even when the source deserves more care than a public upload box.

Use the focused tools to convert formats, combine or divide tables, remove duplicate rows, select columns, and prepare data for another system. Each page explains its assumptions before processing and gives you a preview before download. There is no account, artificial task allowance, or FileGizmo watermark. For very large datasets, desktop-class memory still matters because the work is genuinely happening on your device.

Straight answers

Frequently asked questions

Are these CSV tools really free?

Yes. Every listed CSV and data tool is free to use without an account, daily task limit, or output watermark.

Does FileGizmo upload my spreadsheet or dataset?

No. Processing happens locally in your browser, so your selected files are not sent to FileGizmo servers.

Which data formats can I work with?

The collection covers CSV, JSON, Excel, XML, YAML, SQL, Markdown, and common table-cleaning tasks. Each tool page lists its accepted inputs.