JWT Decoder
Decode + verify locally (WebCrypto). No uploads.
Paste a token
JWT
Verify signature
Verification runs locally using WebCrypto. You must provide a secret (HS256) or public key (RS256).
Note: This does not “crack” tokens. It only verifies with keys you provide.
SEO checklist (quick)
- Have /privacy-policy, /terms, /about, /contact
- Add metadata + canonical for each tool page
- Submit site to Google Search Console
- Generate sitemap.xml
AdSense placeholders (enable later)
When AdSense is approved, you can insert a small ad here (right column) and one below the token input.
Ad slot placeholder
⚠️ Client-side verify supports HS256 + RS256 only. Other algorithms can be added if needed.