Developer Tools
Single-page utilities for security and development workflows.
JWT Debugger /jwt →
Decode, verify, and generate JSON Web Tokens. Supports HMAC algorithms with real-time signature validation and shareable links.
SAML Decoder /saml →
Decode Base64-encoded SAML responses, requests, and metadata. View formatted XML with syntax highlighting or browse attributes in a table.
Certificate Decoder /pem →
Decode and inspect PEM-encoded X.509 certificate chains. Automatically sorts chain order and shows subject, issuer, SANs, validity, and fingerprints.
Markdown Preview /md →
Reading-first Markdown previewer with live rendering, Mermaid diagrams, KaTeX math, GitHub alerts, find-in-page, source editing, and self-contained HTML or PDF export.
PDF Extractor /pdf →
Extract spatial text and structured JSON (with per-item bounding boxes) from PDFs entirely in your browser. Optional Tesseract.js OCR for scanned documents.
Echo /echo →
Build a fully customizable HTTP response (status, headers, body) and serve it as a shareable URL.
Webhook Inspector /webhook →
Get a unique, ephemeral webhook URL and watch incoming HTTP requests arrive live in a grid. End-to-end encrypted, browser-only, no signup.
Forecast /forecast →
Fit trendlines, forecast future values, smooth noisy data, and spot anomalies in any numeric series. WASM-powered, single-page, shareable.