Format, validate, and transform code and data on the fly.
A full-screen JSON editor: format, validate, repair, sort keys, and explore as a tree, table or JSONPath query — 100% local.
Create strong passwords and passphrases with live entropy and crack-time estimates — generated securely in your browser and never stored.
Encode and decode Base64 text and files, with UTF-8, URL-safe and data: URI support — processed 100% locally in your browser.
Generate v4, v7 and v1 UUIDs in several formats, download them, and validate or inspect any UUID — 100% local.
Generate MD5, SHA and CRC32 hashes of text or files and verify a checksum — processed 100% locally.
Decode a JWT, read its claims in plain language, and verify the signature with your secret or public key — 100% local, never stored.
Convert text between 14 case styles live — Unicode-aware, per line, and ideal for identifiers.
Generate social share meta tags with live previews for Google, X, Facebook, LinkedIn and Slack, plus length counters and image checks.
Test regular expressions with live highlighting, groups, replace and split, a pattern explainer and a library of common patterns — 100% local.
Percent-encode or decode text and URLs in three modes, and see a URL's parts and query parameters — 100% local.
Generate TypeScript interfaces, type aliases and Zod schemas from JSON, with optional fields and unions detected for you.
Turn titles into clean, SEO-friendly URL slugs — transliteration, stop words, max length and bulk conversion.
Compare two texts side by side or inline with word-level highlights and patch export — 100% local.
Convert between JSON and YAML in a full-screen editor — anchors, multiline strings and multi-document files included.
Convert CSV to JSON and back, with delimiter detection, type detection and a table preview — 100% local.
Write Markdown with a live, scroll-synced preview and export to .md or .html — sanitized and 100% local.
Format SQL for 16 dialects with options for keyword case, indent and comma placement — comments preserved, 100% local.
Capitalize headlines using AP, APA or Chicago / MLA rules — acronyms and brand names kept, one headline per line.
Convert JSON to CSV with delimiter, nesting, arrays, Excel and formula-safety options, and a table preview.
Minify HTML, CSS, JavaScript, JSON and SVG — with before/after size and gzip estimate, 100% local.
Generate an HMAC in hex or Base64 and verify a received signature, computed locally in your browser.
Encode and decode HTML entities with named, decimal or hex styles and a searchable reference.
Remove duplicate lines, find duplicates, count occurrences and sort — with live statistics.
Find and remove invisible Unicode characters, see where they hide, and keep emoji and non-Latin text intact.
Generate Lorem Ipsum by paragraphs, sentences or words — as text, HTML or a list.