Why data format tools belong together
Every backend, frontend, and integration pipeline pushes data between formats. JSON dominates APIs. YAML owns configs. XML still powers SOAP, SAML, RSS, SVG, and every Microsoft Office document. CSV refuses to die because Excel outputs it. You need a clean toolkit that covers all four, handles their edge cases correctly, and gets out of your way.
The tools in this pillar are built around the same assumptions:
- Client-side parsing — your data stays in your browser. Paste production JSON without worry.
- RFC-compliant — JSON 8259, YAML 1.2, XML 1.0, CSV RFC 4180. We don't guess, we follow the spec.
- Structural over textual — JSON Diff works whether or not key order matches. Formatting differences don't create false diffs.
- Precise errors — when something fails, we tell you where and why, not just "parse error."
How the tools connect
Common workflows that chain tools in this pillar:
- Config review: paste YAML config → YAML to JSON → format → paste old version + new into JSON Diff
- API response debugging: paste raw response into JSON Formatter, then feed into JSON Diff against a known-good fixture
- Legacy XML migration: format with XML Formatter, then transform the logical structure via your own script to JSON or YAML
- Bulk data import: paste Excel-exported CSV into CSV to JSON, then validate the shape of the first few records with JSON Formatter
All 10 tools in this pillar
- JSON Formatter — Format, validate, and beautify JSON online. 100% client-side — your data never leaves your browser.
- JSON Viewer — Explore JSON as a collapsible tree. Paste JSON and navigate nested structures with expand/collapse and JSONPath copy.
- XML Formatter — Format, validate, and beautify XML documents.
- YAML ↔ JSON Converter — Convert between YAML and JSON formats with full fidelity.
- CSV to JSON Converter — Convert CSV files to JSON with proper quoting and escaping.
- JSON Diff — Compare two JSON objects structurally with field-by-field diff.
- Text Diff — Compare two text blocks line-by-line or word-by-word. Unified and split view. Shows added, removed, and changed segments with full color coding.
- Markdown Preview — Live Markdown preview with GitHub-flavored syntax. Tables, task lists, code blocks, strikethrough. Side-by-side editor and rendered output.
- SQL Formatter — Format and beautify SQL queries. 12 dialect options (PostgreSQL, MySQL, SQLite, MSSQL, BigQuery, Snowflake, and more). Keyword casing control.
- HTML / CSS / JS Minifier — Minify HTML, CSS, or JavaScript. Strips whitespace, comments, and unnecessary characters. Shows size reduction percentage.
Further reading
- What Is JSON and Why You Should Always Format It
- YAML vs JSON: Which Should You Use for Config?
- Why XML Still Matters in 2026
- CSV Quoting and Escaping Rules Every Dev Gets Wrong
- Comparing JSON Structurally (Not Just as Strings)
Other pillars
- Encoding & Crypto — Base64, URL, JWT, hashes, UUID, QR, password.
- Dev Productivity — regex, cron, timestamps, HTTP, color, word counter, aspect ratio, case.
- Frontend & Design — Flexbox, Grid, box shadow, favicon.
Curated and maintained by Mian Ali Khalid. Last updated 2026-04-25.