GongsiMap Tools

English

Free online tools that run in your browser

Convert Excel, CSV and JSON, convert and compress images, encode text and generate UUIDs — no sign-up, no install. Everything is processed on your own device.

File conversion

Excel to CSVSave any Excel sheet as CSV, or every sheet at once as a ZIP.CSV to ExcelTurn CSV or TSV data into an .xlsx file without losing leading zeros.

Image tools

Image to WebPBatch convert JPG and PNG images to WebP and see how much you save.Image Compressor & ResizerShrink JPG, PNG and WebP files by compressing and resizing them.

Developer tools

JSON Formatter & ValidatorPretty-print, minify and validate JSON with exact error locations.UUID GeneratorGenerate up to 1000 UUID v4 or time-ordered v7 values at once.

Text tools

Base64 Encode & DecodeEncode or decode Base64 text and files, UTF-8 and URL-safe ready.URL Encode & DecodePercent-encode or decode URLs and query values, line by line.

Data conversion

JSON to CSVTurn a JSON array into CSV rows, with optional dot-notation columns.CSV to JSONTurn CSV rows into a JSON array of objects, with type detection.