Runs locally
Local Payload Console

Fast, browser-local tools for real-world payloads.

Format, decode, compare, and convert without uploading your data. PayloadHarbor keeps every tool focused, explainable, and ready to copy or export.

Open JSON FormatterExplore all tools
  • Local processingInputs stay in this browser tab.
  • No accountOpen a tool and start immediately.
  • Clear outcomesActionable errors and copy-ready results.
JSON FormatterLocal browser session
Input
{"service":"harbor","status":"ok","private":true}
Output
{
  "service": "harbor",
  "status": "ok",
  "private": true
}
Valid JSON · nothing sent to a server

Choose a tool

Focused utilities. The same fast, local workflow.

01JSON Formatter & ValidatorFormat, validate, and minify JSON with clear syntax errors.Open tool 02JSON Compare / DiffCompare two JSON payloads and inspect path-level changes locally.Open tool 03JSON SorterSort JSON object keys recursively for deterministic diffs.Open tool 04JSON5 Formatter & ValidatorFormat JSON5 configs with comments, trailing commas, and single quotes.Open tool 05YAML Formatter & ValidatorValidate and format YAML configs without uploading files.Open tool 06YAML to JSON ConverterConvert YAML configs into formatted JSON locally.Open tool 07JSON to YAML ConverterConvert JSON objects and arrays into YAML locally.Open tool 08YAML to XML ConverterConvert one-root YAML mappings into formatted XML locally.Open tool 09XML ToolkitFormat, validate, and convert XML to JSON locally.Open tool 10XML MinifierCompact XML payloads locally with parser-error feedback.Open tool 11XML to YAML ConverterConvert XML attributes and repeated tags into YAML locally.Open tool 12JSON to XML ConverterConvert one-root JSON objects into formatted XML locally.Open tool 13CSV to JSON ConverterConvert CSV header rows into JSON object arrays locally.Open tool 14JSON to CSV ConverterConvert JSON objects into CSV with escaped cells.Open tool 15CSV to YAML ConverterConvert header-row CSV into YAML sequences locally.Open tool 16HTML Formatter & MinifierFormat or compact HTML snippets with balanced-tag checks.Open tool 17Escape / Unescape TextEscape and unescape HTML, XML, JSON, CSV, and JavaScript text.Open tool 18URL Encoder DecoderEncode or decode URL text and percent escapes in the browser.Open tool 19HTML Escape UnescapeEscape or unescape HTML entities for snippets and payload examples.Open tool 20Unix Timestamp ConverterConvert seconds, milliseconds, microseconds, and nanoseconds.Open tool 21JWT DecoderInspect JWT headers, payloads, and registered claims locally.Open tool 22Mermaid Diagram EditorWrite Mermaid diagrams as code with live SVG/PNG export.Open tool

Your payload has no trip to make.

Each transformation happens inside the browser with standard Web APIs. The site does not include analytics, accounts, or payload storage.

Read the privacy model
  1. 1
    You enter dataInput exists in component memory.
  2. 2
    The browser processes itPure local parsing and conversion.
  3. 3
    You copy or exportYou decide where the result goes.