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.
TOML tools (JSON to TOML, TOML to JSON, TOML validator), YAML tools (YAML to JSON, JSON to YAML, JSON to Toon, YAML validator), XML & SQL tools (XML to JSON/YAML/CSV/Toon, XML validator, SQL INSERT to JSON/CSV), and TSV tools (TSV to CSV).
Bidirectional YAML to JSON and JSON to YAML conversion with auto-format detection and real-time preview. Perfect for configuration files, API payloads, and data migration.
Format converters (INI to JSON, JSON to TOML, JSON to Toon, MessagePack/CBOR inspector), data tools (Excel data cleaner, Excel sheet merger, dataset analyzer, data anonymizer), code converters (code to cURL, cURL to code, JSON-RPC builder), and analyzers (HAR file analyzer, log file analyzer, package.json validator, MIME type finder).
21 CSV tools (extract, rename, clean, dedup, validate, merge, pivot, filter, sort, split, stats, transpose + exports to HTML/MD/NDJSON/SQL/TSV/Excel), 14 JSON tools (diff, flatten, escape, path finder, schema generator, size analyzer, TypeScript/Zod generators, JWK, JSONL, NDJSON), data converters (JSON↔YAML/XML/TOML/URL/CSV), and data generators (UUID, hex, base64, names, emails, phones, dates, IPs, CSV/JSON rows).
Parses structured JSON data—including nested objects and arrays—and flattens it into a clean CSV spreadsheet with proper column headers.
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's ideal for developers, designers, and anyone who needs to convert messy csv or excel sheets from clients into clean json in one batch without installing software or sending data to external servers.
Direct text entry, file upload, or URL-based input — depending on the tool. Common file formats are supported for upload-based tools.
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.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check individual tool descriptions for specifics.
No. All code processing — formatting, minification, conversion, hashing — runs locally in your browser.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. SQL uses sql-formatter, JSON uses native JSON.parse, and other formatters follow widely adopted formatting rules.
Yes. All developer tools work fully offline after the initial page load.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results.
Diff Checker
Compares two input texts side-by-side, highlighting inserted, deleted, and changed lines with distinct background colors.
Regex Tester
Provides an interactive environment where users can write a regular expression pattern, test it against sample strings, and view real-time match.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.
JS Minifier
Strips comments, whitespace, and shortens local variable names in JavaScript source without altering execution semantics.
Base64 Encode/Decode
Encodes text or small files into Base64 strings and decodes them back with automatic MIME-type detection for binary safety.