RividTechCSV, TSV, JSON & Excel tools
Free CSV online tools for Excel to CSV conversion, converting CSV to Excel, csvtojson, and CSV view — plus TSV, JSON, and SQL. Everything runs in your browser with RividTech; nothing is uploaded.
DB in Browser
Load CSVs as SQLite tables, run SQL joins, copy results as CSV/TSV/JSON.
- Load CSV tables
- Run SQL joins
- Export results
Data Process
Explore data with search, sort, filters, column reorder, and hide.
- Search & filter
- Sort rows
- Organize columns
Tool types
Choose a tool type to find what you need.
Converters
CSV, TSV, JSON, SQL, Excel, Markdown & HTML
21 toolsClean & Transform
Query SQL, filter, deduplicate, compare & reshape data
8 toolsPreviews
Interactive table view for CSV, TSV, JSON & Markdown
4 toolsFormatters
Pretty-print or minify JSON and HTML code
2 toolsEncode & Decode
URL encoding, HTML entities, and Base64 conversions
3 tools
Latest blog posts
Practical guides and tips for working with your data.
- RividTech
DuckDB 2.0 Alpha: What's New for CSV and JSON Processing
DuckDB 2.0 alpha brings VARIANT JSON, diff/merge patch functions, and faster CSV I/O. Here is what matters for CSV/JSON work — plus the no-install browser equivalent.
DuckDBSQLCSV - RividTech
DuckDB vs SQLite: Which One Fits Your CSV and JSON Work?
Both are single-file SQL with no server — but DuckDB is analytics-first, SQLite is transactions-first. Here is how to pick for CSV/JSON work.
DuckDBSQLiteSQL - RividTech
JSONL / NDJSON Explained: From AI APIs and Logs to CSV
AI APIs, logs, and open datasets speak JSONL — one JSON object per line. Flatten nested records and convert to CSV or Excel without uploading.
JSONJSONLCSV - RividTech
Don't Paste Customer CSV Into ChatGPT — Prep Data for AI Safely
AI plus raw customer CSV is a privacy incident waiting to happen. Scrub, shrink, and validate locally first — then prompt safely.
AIprivacyCSV - RividTech
Excel Won't Open My Large CSV (1M+ Rows) — What to Do
Excel stops at 1,048,576 rows and chokes on big CSVs. Export smaller batches and filter the file before converting it for Excel.
ExcelCSVXLSX - RividTech
Run SQL on CSV in Your Browser — No Upload, No Install
SELECT * FROM orders.csv WHERE status = 'paid' — without a database or upload. How to think in SQL and run it privately in your browser.
SQLCSVJSON