Convert messy CSV or Excel sheets from clients into clean JSON in one batch. Handles missing values, nested rows, and generates strict JSON schemas for 50+ files at once. Everything runs locally in your browser — nothing is uploaded.
Converts JSON files to CSV format — APIs, configuration files, and data exchange between web services to spreadsheets, database exports, and data imports. All conversion happens locally in your browser with no file size limits.
Converts CSV files to JSON format — spreadsheets, database exports, and data imports to APIs, configuration files, and data exchange between web services. All conversion happens locally in your browser with no file size limits.
Bidirectional converter between Excel spreadsheets (XLSX) and CSV files. Select sheets, choose delimiters, and preview data before converting.
Generate realistic dummy data as CSV rows or JSON objects. Configure count (1-50) for test data, demos, and prototyping.
Shorten hundreds of URLs in one batch. Paste a list or upload a CSV — get shortened links with copy-all and CSV export. Uses cloud-based processing.
Bulk CSV/Excel to JSON lets you convert messy CSV or Excel sheets from clients into clean JSON in one batch. Handles missing values, nested rows, and generates strict JSON schemas for 50+ files at once. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Convert messy CSV or Excel sheets from clients into clean JSON in one batch. Handles missing values, nested rows, and generates strict JSON schemas for 50+ files at once. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Upload a file from your device. Drag and drop or use the file picker to select your document.
Yes. After the initial page load, Bulk CSV/Excel to JSON runs entirely on your device with no internet connection needed. All processing is done locally.
Convert messy CSV or Excel sheets from clients into clean JSON in one batch. Handles missing values, nested rows, and generates strict JSON schemas for 50+ files at once. Everything runs locally in your browser — nothing is uploaded. All conversions happen locally in your browser.
Format support depends on the specific converter. Check the tool description for supported input and output formats.
Quality depends on the format pair. Lossless conversions preserve original quality; compressed formats offer adjustable quality.
No artificial limits. Very large files may process slower depending on your device's memory.
Yes. All conversions happen locally in your browser. Files never leave your device.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.
CSV Analyzer
Analyze CSV structure — column types, counts, unique values, and empty cells.
CSV to SQL INSERT
Converts CSV files to SQL format — spreadsheets, database exports, and data imports to relational database operations, data analysis, and reporting. All conversion happens locally in your browser with no file size limits.
CSV Row / JSON Generator
Generate realistic dummy data as CSV rows or JSON objects. Configure count (1-50) for test data, demos, and prototyping.
CSV Output Tools
Convert CSV data to Markdown tables, NDJSON, SQL INSERT statements, HTML tables, or analyze statistics and find data quality issues.