Flatten nested JSON objects into dot-notation key-value pairs. Unwrap complex hierarchies for tabular processing. 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).
Convert JSON objects into URL query string parameters. Transform `{"key":"val"}` to `key=val` format for API calls.
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.
Parses structured JSON data—including nested objects and arrays—and flattens it into a clean CSV spreadsheet with proper column headers.
Transforms well-formed XML documents into equivalent JSON structures, mapping attributes to prefixed keys and text content to a configurable key.
JSON Flattener lets you flatten nested JSON objects into dot-notation key-value pairs. Unwrap complex hierarchies for tabular processing. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Flatten nested JSON objects into dot-notation key-value pairs. Unwrap complex hierarchies for tabular processing. Everything runs locally in your browser — nothing is uploaded. It's ideal for developers, designers, and anyone who needs to flatten nested json objects into dot-notation key-value pairs without installing software or sending data to external servers.
Direct text entry, file upload, or URL-based input — depending on the tool. Paste or type your content directly into the provided editor area.
Yes. After the initial page load, JSON Flattener 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.