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.

Format and inspect

Clean, validate, compare, and normalize structured payloads.

JSON Formatter & ValidatorFormat, validate, and minify JSON with clear syntax errors.JSON Compare / DiffCompare two JSON payloads and inspect path-level changes locally.JSON SorterSort JSON object keys recursively for deterministic diffs.JSON5 Formatter & ValidatorFormat JSON5 configs with comments, trailing commas, and single quotes.YAML Formatter & ValidatorValidate and format YAML configs without uploading files.XML ToolkitFormat, validate, and convert XML to JSON locally.XML MinifierCompact XML payloads locally with parser-error feedback.HTML Formatter & MinifierFormat or compact HTML snippets with balanced-tag checks.

Convert formats

Move payloads between JSON, YAML, XML, and CSV.

YAML to JSON ConverterConvert YAML configs into formatted JSON locally.JSON to YAML ConverterConvert JSON objects and arrays into YAML locally.YAML to XML ConverterConvert one-root YAML mappings into formatted XML locally.XML to YAML ConverterConvert XML attributes and repeated tags into YAML locally.JSON to XML ConverterConvert one-root JSON objects into formatted XML locally.CSV to JSON ConverterConvert CSV header rows into JSON object arrays locally.JSON to CSV ConverterConvert JSON objects into CSV with escaped cells.CSV to YAML ConverterConvert header-row CSV into YAML sequences locally.

Encode and parse

Prepare text for transport and inspect URL structure.

Escape / Unescape TextEscape and unescape HTML, XML, JSON, CSV, and JavaScript text.URL Encoder DecoderEncode or decode URL text and percent escapes in the browser.URL Parser & Query InspectorParse URLs into host, path, query parameters, and fragments locally.HTML Escape UnescapeEscape or unescape HTML entities for snippets and payload examples.

Developer utilities

Generate identifiers, verify signatures, inspect time, tokens, and diagrams.

UUID Generator & ValidatorGenerate UUID v4/v7 values and verify pasted UUID format.HMAC + Hash GeneratorGenerate SHA hashes and verify HMAC webhook signatures locally.Unix Timestamp ConverterConvert seconds, milliseconds, microseconds, and nanoseconds.JWT DecoderInspect JWT headers, payloads, and registered claims locally.Mermaid Diagram EditorWrite Mermaid diagrams as code with live SVG/PNG export.

Your payload has no trip to make.

Each transformation happens inside the browser with standard Web APIs. The site does not include accounts or payload storage; hosting telemetry is limited to infrastructure delivery and security.

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.