arling

CORS Doctor: find why the browser blocks your request (origin, credentials, preflight, headers) and get the exact server headers to set. Free, client-side.

ARLing Asistent: an AI shopping assistant that answers only from a shop's own product feed. Cloudflare Workers, no conversation storage.

Parovac platieb: match a camt.053 bank statement against your invoice list (Excel/CSV) by variable symbol and amount. Unpaid, overpaid, unmatched. Slovak, client-side, free with a Pro tier.

Bankove nastroje pre uctovnikov: SEPA pain.001 Doctor, Generator, camt.053 to Excel, Parovac platieb. One Pro licence. Slovak.

camt.053 bank statement (Tatra banka, SLSP, VUB, CSOB) to CSV/Excel converter for accountants. Free, client-side, Slovak.

Firebase Auth Domain Doctor: auth/unauthorized-domain, signInWithRedirect not working, authDomain and custom domains explained and checked. Free, client-side.

Cookie Doctor: why your cookie is not set or not sent (SameSite, Secure, Domain, localhost, cross-site). Free, client-side.

Redirect Loop Doctor: ERR_TOO_MANY_REDIRECTS on Cloudflare, nginx, Apache, WordPress, Vercel: find the loop and the fix. Free, client-side.

JWT Doctor: decode a token in your browser, check exp/nbf/aud/iss/alg and verify the signature with your public key. Nothing leaves the page.

arling.sk: small browser tools for online shops, accountants and developers. Nothing you paste leaves your browser.