Roadmap

Convert any JSON document into TypeScript interfaces with smart array merging (optional fields instead of unions) and singularized array names.

Compare two JSON documents. Three output formats: human-readable summary, JSON Patch, JSON Merge Patch. 100% client-side.

Three new JSON ecosystem tools. Generate Draft 07 / 2020-12 schemas, validate documents with Ajv, and test JSONPath expressions — all client-side.

Paste a curl command, get equivalent code in 5 target languages. Handles multi-line input, all common flags, JSON / form / multipart bodies, basic auth.

Decode header + payload, view standard claims with human times, verify HMAC signatures (HS256/384/512) via Web Crypto API. Secret never leaves the browser.

Live current-timestamp display + bidirectional converter. Auto-detects seconds, milliseconds, microseconds, nanoseconds. ISO 8601 / UTC / local / RFC 2822 / relative.

60+ codes with plain-language explanations, typical use cases, class filtering, and search.

WCAG 2.1 AA/AAA thresholds and the modern APCA (WCAG 3 draft) algorithm side-by-side. Live preview at 3 text sizes.

Drag-and-drop conversion to data URI. SVG inputs use percent-encoding instead of base64. CSS / HTML / Markdown output formats.

CIDR → subnet mask, wildcard, network range, broadcast, usable hosts. Interactive prefix slider. Detects private / CGNAT / loopback / multicast ranges.

Parse UA strings into browser, OS, device type, engine. Bot detection. Uses ua-parser-js loaded client-side.

Dotted decimal ↔ integer ↔ hex ↔ binary ↔ octal ↔ IPv6-mapped ↔ reverse DNS. Auto-detects input format.

Named, numeric, and hex entity encoding. 200+ named entity table. Astral character support.

Convert CSV / TSV / JSON array of objects to properly-aligned Markdown tables with live preview. GFM-compatible.

Powered by js-beautify (the same lib VS Code uses). Beautify mode for JS/JSON/CSS/HTML, optional whitespace minifier for JS.

RFC 2045 encoding for email-safe text. Supports 40+ charsets via iconv-lite (UTF-8, Latin-1, Shift-JIS, GB18030, and more).

Bots probing for /wp-admin, /.env, /.git, phpMyAdmin, web shells, and 50+ other malicious paths get auto-banned at the edge. Bans surface in admin with a distinct "auto" badge.

Persistent request logging across Vercel lambda recycles. Country / region / city geo via Vercel + Cloudflare headers.

Generate Ed25519 and RSA keypairs in OpenSSH format. Public + private side by side, with the standard "known_hosts" fingerprint shown for the public half.

OpenPGP key generation for testing and learning. Comes with sign / encrypt / decrypt subtools built around it.

Each major tool gets a dedicated 1,500-word "when to use this, common mistakes, and 5 real-world examples" article. Linked from the tool page.

Paste a CREATE TABLE block, get a Mermaid ER diagram and a downloadable SVG. Supports MySQL, PostgreSQL, SQLite, and MS SQL syntax.

Detects naming inconsistencies, unused types, and circular references; prettifies the schema with controlled wrapping.

Cmd/Ctrl+K to open the tool search from anywhere on the site, with type-ahead match across tool names, descriptions, and keywords.

Upload one square image, get a complete favicon package: ICO, 16/32/48/192/512 PNGs, Apple touch icon, web manifest, plus the exact HTML to paste.

Extract selectable text from a PDF using pdf.js. Page-by-page or as one stream. Detects scanned PDFs and recommends OCR alternatives.

Paste any cron string; get a plain-English description plus the next 10 fire times in your timezone with a calendar heat-map.

Get a unique inbound URL, see every POST that hits it with full headers and body. Useful for debugging Stripe, GitHub, and any other webhook integration.

Paste a PEM, see issuer, validity dates, SAN list, key algorithm and size, and a clear "this expires in N days" badge.

Verify RS256/ES256 JWTs against a remote .well-known/jwks.json endpoint instead of pasting the public key manually. Builds on the existing JWT tester.

Pick your stack (Node, Python, Go, Rust), license, and key sections; get a polished README with badges, installation snippets, and contribution guidelines.

Answer 4 questions about your use case; get the right open-source license (MIT, Apache-2.0, GPL, MPL, BSD) with the full text and the exact attribution wording.

Browser-side using OffscreenCanvas; quality slider, target file size mode, transparent background preservation.

Dedicated technical blog with editor bylines, dates, and a real editorial calendar. Topics: JSON Pointer, what HMAC actually does, regex performance gotchas, when NOT to use Base64, and others.

Lightweight CWV inspector — paste a URL, get a one-page report with the four key metrics, the most expensive resources, and the most likely fixes.

The XML counterparts of our JSON suite. Pretty-print, validate against XSD, evaluate XPath expressions.

Round-trip between TOML, INI, Java properties, .env, and YAML. Catches the edge cases each format has around arrays and nested objects.

Lint an OpenAPI 3.x spec for common issues, generate a mock server URL, and produce client snippets in 5 languages.

Optionally-realistic placeholder text: blog post, product description, biography, log line. Useful when designing layouts that need to look real.

Every server-side tool with a JSON endpoint gets a documented public API: endpoint, request shape, response shape, rate limits.

Some tools have output that needs to be checked in dark mode specifically (color tools, contrast tools). A per-tool override that doesn't affect site-wide preference.

Hesitant — the no-account model is intentional. If we add accounts, it would be optional, email-only, used purely to sync saved tool configurations across devices.

A handful of formatters and converters wrapped as a single npx package, so they work in CI without an internet round-trip.