JSON Formatter and Validator
Format, compress, and validate JSON. See the exact location of syntax errors and optionally sort object keys.
Local processingData & Developer Tools
Format JSON, CSV, XML, and developer utilities. (14)
What these data & developer tools cover
Format and inspect structured data and developer helpers in the browser: pretty-print or minify JSON with validation, compare two JSON documents, view CSV as a table, convert CSV↔JSON and YAML↔JSON, format XML, encode/decode Base64 and URLs, decode JWT headers and payloads (without verifying signatures), generate UUIDs, hash text or files (SHA-256/512), convert Unix timestamps, explain cron schedules, and format JS/TS/HTML/CSS/JSON code.
How to choose a data tool
Broken JSON → JSON Formatter; two JSON trees → JSON Compare; spreadsheet-like files → CSV Viewer or CSV↔JSON; config files → YAML↔JSON or XML Formatter; tokens → JWT Decoder; IDs → UUID Generator; digests → Hash Generator; schedules → Cron Explainer.
Processing notes
Parsing and formatting run in your browser. JWT decoding does not verify signatures—treat tokens as untrusted input.
JSON Compare
Compare two JSON documents and see added, removed, or changed keys and values in a structured view.
Local processingCSV Viewer
Open a CSV file and view it as a sortable table in your browser, with separator detection, optional column names, and row and column counts.
Local processingCSV JSON Converter
Convert CSV data to JSON or convert tabular JSON data to CSV. Choose the separator, quotation handling, and whether the first row contains column names.
Local processingXML Formatter
Pretty-print and minify XML with syntax validation, indent control, and parse error line hints.
Local processingYAML JSON Converter
Convert YAML to JSON or JSON to YAML. See clear syntax errors and copy or download the formatted result.
Local processingBase64 Encoder and Decoder
Encode and decode text and small files to Base64 or Base64URL. Inspect byte length and copy results for data URLs or APIs.
Local processingURL Encoder, Decoder, and Analyzer
Encode or decode a URL and separate it into its protocol, host name, port, path, query parameters, and fragment.
Local processingJWT Decoder
Decode JWT header and payload JSON locally. Signature is NOT verified—safe inspection of exp, iss, and claims.
Local processingUUID Generator
Generate one or more UUID version 4 identifiers using cryptographically secure randomness in your browser.
Local processingHash Generator
Calculate SHA-256 and SHA-512 checksums for UTF-8 text and local files directly in your browser.
Local processingUnix Timestamp Converter
Convert Unix timestamps in seconds or milliseconds into local and UTC dates, or convert a date back into a Unix timestamp.
Local processingCron Expression Explainer
Explain a cron expression and list its next scheduled run times. Supports common five-field expressions and six-field expressions with seconds.
Local processingCode Formatter
Format JavaScript, TypeScript, HTML, CSS, and JSON with consistent indentation and line breaks.
Local processing