Format JSON, decode JWTs, convert CSV to Excel and 29 more utilities — all blazing fast, free, and processed 100% in your browser.
The utilities developers reach for most.
Format and beautify JSON with customizable indentation. Paste your minified JSON and instantly get a clean, readable, properly indented version.
JSONValidate JSON in real time and find syntax errors instantly. Get precise error messages with line and column information.
JSONExplore JSON documents with a beautiful interactive tree view. Collapse and expand nodes, and copy any path with one click.
JSONConvert JSON arrays of objects into clean CSV in one click. Handles nested objects, arrays and inconsistent keys.
JSONConvert CSV data into JSON arrays of objects with automatic type detection and configurable delimiters.
JSONDecode JWTs instantly to inspect the header, payload and signature. Readable JSON output plus automatic claim summary.
SecurityEncode text to Base64 with full Unicode support. Perfect for encoding strings for HTTP headers, data URIs and more.
EncodingDecode Base64 strings back into readable text with full Unicode support. Handles both canonical and URL-safe Base64.
EncodingPercent-encode strings for safe use in URLs and query strings. Choose between component-level and full-URL encoding.
EncodingFormat, validate, encode, decode and generate — everything a developer needs, right in the browser.
Format and beautify JSON with customizable indentation. Paste your minified JSON and instantly get a clean, readable, properly indented version.
Validate JSON in real time and find syntax errors instantly. Get precise error messages with line and column information.
Minify JSON by removing all unnecessary whitespace. Shrink your JSON payloads to reduce bandwidth and API response size.
Explore JSON documents with a beautiful interactive tree view. Collapse and expand nodes, and copy any path with one click.
Convert JSON arrays of objects into clean CSV in one click. Handles nested objects, arrays and inconsistent keys.
Convert CSV data into JSON arrays of objects with automatic type detection and configurable delimiters.
Decode JWTs instantly to inspect the header, payload and signature. Readable JSON output plus automatic claim summary.
Encode text to Base64 with full Unicode support. Perfect for encoding strings for HTTP headers, data URIs and more.
Decode Base64 strings back into readable text with full Unicode support. Handles both canonical and URL-safe Base64.
A modern toolkit that respects your data and your time.
Everything runs client-side with JavaScript. Your files and text are processed on your device and never touch a server.
No page reloads, no waiting on a server round-trip. Results appear the moment you type, thanks to native browser APIs.
No accounts, no email forms, no credit cards. Every tool is free to use with zero limitations.
Most tools are pure client-side functions and work even without a connection, once the page is loaded.
Convert between CSV, JSON, XML, YAML, TSV and Excel files — securely, without ever uploading them.
Upload a CSV file and convert it to JSON in your browser. Automatic type detection, flexible delimiters, and downloadable output.
Convert JSON files into CSV spreadsheets. Flattens nested objects into dotted columns and lets you download the result.
Convert XML documents to JSON with attribute and text-content handling, plus array merging for repeated elements.
Convert JSON objects into well-formed XML. Choose a root element name and optional pretty printing.
Convert YAML configuration files to JSON. Parse YAML anchors, multiline strings and nested structures with ease.
Convert JSON to clean YAML, perfect for Kubernetes manifests, CI configs and other YAML-first tooling.