Every page on this site

Main pages

• Home

  Start here — flagship tools and the tool directory

• All tools

  Every one of the 19 tools on a single page

• Blog

  One practical guide for each of the 19 tools

• Guides

  Long-form write-ups on data formats

• FAQ

  How the tools work, privacy, licensing

• About

  Why the site exists and how it is built

• Contact

  Report a bug or request a tool

• Privacy policy

  What is (and is not) collected

• Terms of use

  Licence and warranty terms

YAML tools

Work with YAML configs, Kubernetes manifests and CI files.

• YAML to JSON

  Convert Kubernetes, Docker and CI configs to JSON with multi-document support.

• JSON to YAML

  Generate readable YAML from JSON with indentation and quoting controls.

JSON tools

Format, validate, explore and diff JSON documents.

• JSON Formatter

  Pretty-print, minify and validate JSON with exact error locations.

• JSON Diff

  Compare two JSON files and list every change by path.

• JSON to JSON Schema

  Infer a validation-ready JSON Schema from any sample payload.

Code generators

Turn sample JSON into typed, ready-to-paste code.

• JSON to TypeScript

  Generate typed interfaces from JSON, with optional keys and unions inferred.

• JSON to Go

  Generate Go structs with json tags and omitempty from JSON.

• JSON to SQL

  Generate CREATE TABLE and INSERT statements from JSON data.

Data converters

Move data between CSV, XML, Excel, subtitles and JSON.

• CSV to JSON

  Convert CSV/TSV exports to JSON arrays or JSON Lines.

• JSON to CSV

  Convert JSON arrays into Excel-ready CSV or TSV files.

• XML to JSON

  Convert RSS, SOAP, sitemaps and config XML into predictable JSON.

• Excel to JSON

  Convert XLSX workbooks and spreadsheets to JSON, fully offline.

• SRT to VTT

  Convert SRT subtitles to WebVTT for HTML5 video players.

Web & encoding

URLs, Base64, JWTs, HTTP requests and timestamps.

• JWT Decoder

  Inspect JWT header, payload and expiry without leaving the browser.

• Timestamp Converter

  Convert epoch seconds/millis to dates, or dates back to epoch.

• URL Encoder / Decoder

  Percent-encode URLs and decode query strings correctly.

• Base64 Encoder / Decoder

  Encode and decode Base64 with correct Unicode and URL-safe support.

• cURL to fetch

  Turn cURL commands into fetch, axios or node-fetch code.

• Markdown Table Generator

  Turn spreadsheets into aligned GitHub-flavoured Markdown tables.

Blog — one guide for every tool

• YAML to JSON: converting configs without losing your mind

  Targets “yaml to json” · 6 min read

• JSON to YAML: making machine output readable again

  Targets “json to yaml” · 5 min read

• JSON formatter: pretty, minified, and actually valid

  Targets “json formatter” · 6 min read

• JSON diff: comparing data the way it is actually structured

  Targets “json diff” · 6 min read

• JSON to JSON Schema: from sample payload to contract

  Targets “json to json schema” · 6 min read

• JSON to TypeScript: types that match reality

  Targets “json to typescript” · 6 min read

• JSON to Go: structs that unmarshal on the first try

  Targets “json to go struct” · 5 min read

• JSON to SQL: from a payload to a table you can query

  Targets “json to sql” · 5 min read

• CSV to JSON: from a spreadsheet to structured data

  Targets “csv to json” · 5 min read

• JSON to CSV: flattening nested data without losing meaning

  Targets “json to csv” · 5 min read

• XML to JSON: the decisions every converter has to make

  Targets “xml to json” · 6 min read

• Excel to JSON: turning workbooks into structured data

  Targets “excel to json” · 6 min read

• SRT to VTT: subtitles the browser will actually load

  Targets “srt to vtt” · 5 min read

• JWT decoder: what is inside a token, and what is not

  Targets “jwt decoder” · 6 min read

• Timestamp converter: epoch time without the guesswork

  Targets “timestamp converter” · 5 min read

• URL encoding: when to escape, and when you are breaking things

  Targets “url encode” · 5 min read

• Base64 decode and encode: for transport, not security

  Targets “base64 decode” · 5 min read

• cURL to fetch: moving a request from terminal to browser

  Targets “curl to fetch” · 5 min read

• Markdown tables: generate them instead of counting pipes

  Targets “markdown table” · 5 min read

Long-form guides

• YAML vs JSON: when to use which

  6 min read

• Converting Kubernetes YAML to JSON safely

  5 min read

• Generate TypeScript types from JSON that tell the truth

  6 min read

Machine-readable indexes: sitemap-index.xml, robots.txt.