DevTools

Small utilities, no strings attached.

A short, curated set of tools we actually use. Most run entirely in your browser — no uploads, no account. A few need a server, and say so.

Local

Runs entirely in your browser. What you paste — tokens, headers, configs, requests — never leaves the tab.

Web

Links, requests, previews and domains for what you ship.

SEO Simulator Preview how your pages appear on Google, Twitter and Facebook. QR Code Studio Generate customizable QR codes for URLs, text and Wi-Fi networks. cURL ↔ Fetch Convert curl commands to fetch() and back, with warnings for what does not translate.

Security

Tokens, OAuth flows and response headers — decoded, not uploaded.

OAuth / OIDC Inspector Check an authorization URL, decode a JWT and work out PKCE — all in the tab. Security Headers Paste response headers; see what each one does, what is weak and what is missing.

Cloud

Cloudflare Workers configuration, checked against Wrangler’s own rules.

Wrangler Config Doctor Check wrangler.toml / wrangler.jsonc for binding drift, duplicates and missing fields.

Data

Reshape structured data without pasting it into a server.

Data Converter Convert between JSON and CSV formats instantly.

Media

Images, colour and video — processed in the tab.

Screen Recorder Record your screen directly from the browser, no plugins. Social Card Designer Create Open Graph images for your social media posts. Cinematic Palette Extract dominant colours and create cinematic compositions. Background Remover Remove image backgrounds with an in-browser AI model.

Connected

Tools that need persistent storage or a server to fetch from. Sign in with DevAuth to use them; access is limited to allowed accounts.

Short Links Sign-in Personal short links that really redirect — create, edit and disable them. Domain Inspector Sign-in DNS records, the redirect chain and response headers of a domain.