yutils

Format, validate, and minify JSON strings. Adjust indent and optionally sort keys. Runs entirely in your browser.

Convert strings between camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and Title Case — all six cases shown side-by-side.

Test JavaScript regular expressions with live match results. Supports g/i/m/s/u/y flags and capture groups.

Render Markdown to HTML side-by-side. Supports CommonMark + GFM (tables, fenced code, task lists). marked is lazy-loaded.

Convert HTML into Markdown. Headings, lists, links, code, tables, blockquotes. Uses the browser's DOMParser — accurate, 0 dependency.

Convert between YAML and JSON. Tolerates comments and multiline strings on the YAML side. yaml is lazy-loaded.

Compare two texts and highlight added/removed lines, words, or characters.

Compare two JSON values, with optional key sorting and JSON-aware error messages.

Convert between CSV and JSON. Handles quoted fields, custom delimiters, and header rows.

Format SQL queries with proper indentation and keyword casing. Supports PostgreSQL, MySQL, SQLite, and standard dialects.

Pretty-print or minify XML with attribute preservation. Handles SOAP, sitemaps, and config files.

Convert between XML and JSON with attribute and element handling.

Paste any text and get tool recommendations — JSON, JWT, Base64, URL, UUID, Cron, and 9 more types auto-detected.

Generate placeholder text in words, sentences, or paragraphs. Classic Lorem Ipsum or randomized.

Query JSON with JSONPath expressions ($.store.book[*].author etc.) and inspect matches.

Validate JSON data against a JSON Schema (Draft 2020-12). Powered by Ajv with format support.

Generate a JSON Schema (Draft 2020-12) from a sample JSON. Infer types, required fields, and nested structures automatically.

Beautify or minify HTML with proper indentation, attribute alignment, and configurable wrap.

Beautify or minify CSS with proper indentation. Configurable selector and property style.

Beautify or minify JavaScript with brace style and indent options. Powered by js-beautify.

Convert between TOML (Tom's Obvious Minimal Language) and JSON. Used in Cargo.toml, pyproject.toml, etc.

Convert INI configuration to JSON and back. Supports sections, comments (; or #), and key=value.

Generate TypeScript interfaces from a JSON sample. Nested objects become separate interfaces.

Convert a JavaScript object literal (unquoted keys, single quotes, trailing commas, comments) into standard JSON. Lenient parser, strict output.

Convert text into a URL-safe slug. Configurable separator, lowercase, and accent stripping.

Convert indented text or path list into a box-drawing tree (├── │ └──).

Generate a unified diff (-u) patch from two text inputs. Compatible with `git apply` / `patch -p0`.

Generate fake JSON records and SQL INSERT seed data — names, emails, custom fields, UUIDs, dates, and more. 0 dependency.

Convert MongoDB Extended JSON (EJSON) between Canonical and Relaxed forms, or strip BSON wrappers to plain JSON. Recognizes 16 wrapper types ($oid/$date/$numberLong/$numberDecimal/$binary/...).

Paste Kubernetes manifests and see the resource graph — Deployments, Services, Ingresses, ConfigMaps, Secrets, PVCs, and how they connect. yaml is lazy-loaded.

Paste docker-compose.yml and see services, networks, volumes, and depends_on as an interactive graph. Client-side, lazy-loaded yaml.

Extract text from a PDF file — page by page or as a single document. Markdown-friendly output, all client-side.

Extract slide text from a .pptx file — plain / markdown / per-slide. Great for converting decks to markdown. All client-side.

Visualize your regex as a railroad diagram — trace branches, groups, and quantifiers at a glance, in your browser.

Count characters (with/without spaces), words, sentences, paragraphs, lines, and bytes in real time — free, in your browser.