JWT Decoder & Token Inspector vs BoardTrace

Decode any JSON Web Token in a second — paste it in and JWTPeek splits it into a colour-coded header, payload and signature, pretty-printed and ready to copy. It is the fast, private way to read and inspect a JWT without pasting it into a random website. Most online JWT decoders make you send a sensitive bearer token to a server. JWTPeek does everything locally with Apple's CryptoKit — your token is decoded and verified right on your iPhone and never touches a server, a log or the network. WHAT YOU GET - A clean three-part breakdown of any token: header, payload and signature, each Base64URL-decoded and pretty-printed - Every claim laid out and labelled — issuer, subject, audience and your own custom claims - exp, nbf and iat shown as real human dates, with a live expiry countdown so you know instantly if a token is still valid - One-tap HMAC signature verification with HS256, HS384 or HS512 — enter your secret (plain or Base64) and see match or mismatch - Clear alg:none warnings so you never trust an unsigned token by mistake - A saved history of recently decoded tokens, on this device, so you can reopen any of them in a single tap PERFECT FOR - Backend and API developers debugging authentication and login flows - Engineers building with OAuth 2.0 and OpenID Connect - QA and security testers inspecting bearer tokens and claims - Anyone who needs to quickly check when a token expires WHY NOT JUST USE A WEBSITE? Because pasting a real access token into a browser tab sends it over the internet to a third party. A JWT is a bearer credential — whoever holds it can use it. JWTPeek keeps every token on your device, so you can inspect production tokens without leaking them. PRIVACY 100% on-device. Every token is decoded and verified locally with CryptoKit. Nothing is ever uploaded, logged, or sent to any server. There are no accounts and no tracking. FULL ACCESS JWTPeek Premium unlocks the full toolkit: on-device HMAC signature verification (HS256, HS384, HS512) and the complete security reference. Choose the plan that fits you: - Weekly - Yearly (best value) - Lifetime — pay once, yours forever Subscriptions auto-renew until cancelled; Lifetime is a single one-time purchase. Paste your first token and see it decoded in seconds. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy Questions? tphuc.work@gmail.com

BoardTrace is a local-first bench record for hardware bring-up. Capture test-point readings on a board, compare them against a known-good baseline, and freeze an observation session into an immutable, checksummed record — then hand it off as a board-revision passport. WHAT YOU CAN DO • Create boards with your own test-point map: reference designator, signal name, unit, nominal value and tolerance. • Start a capture session and record measured values against every test point. • See pass/fail at a glance on a spatial Test-Point Map, color-coded per point. • Adopt a completed session as your known-good baseline — adoption freezes the readings with a SHA-256 checksum, so the record can never silently change. • Clone an adopted session into a new draft to compare a later board revision, without ever touching the original record. • Archive superseded or old sessions; delete drafts freely (adopted records that are still referenced by a later revision are protected from deletion). HANDOFF AND BACKUP • Export a session as JSON (free), or as a formatted PDF report and CSV table (Pro). • Back up all your boards to a single JSON file and restore it on this or another device. Restore validates the file's schema and checksum first, so a corrupted or incompatible backup is rejected before anything is touched. PRIVACY BY DESIGN • No account, no sign-in, no server. All boards, test points, sessions and readings stay on your device unless you choose to export or share them. • No analytics, no advertising identifier, no tracking. PRO BoardTrace Pro removes the one-board limit and unlocks PDF/CSV handoff exports and the clone-to-compare workflow. Monthly and yearly auto-renewing subscriptions and a one-time Lifetime purchase are available. Backup, restore and deletion stay free forever. BoardTrace is a record-keeping tool for your own observations. It does not control test instruments, interpret electrical safety, certify a board, or provide engineering advice. TERMS OF USE Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/