Envoh vs JWT & Base64 Decoder/Verifier

Envoh helps you monitor environments, servers, and SSL/TLS certificates from one app. Organize servers by environment, track health signals, and receive alerts when attention is needed. Built for developers, small teams, and technical users, Envoh brings server availability and certificate expiration monitoring together. ENVIRONMENTS AND SERVERS Group servers into environments such as production, staging, or development. View health summaries by status and open each server to see which monitoring signals need attention. - Organize servers by environment - View counts of critical, warning, unknown, and healthy servers - Filter environments by type and servers by health status - Follow health updates without manually refreshing the screen SERVER CHECK Check an HTTP or HTTPS endpoint to monitor your service's availability. - Configure the endpoint and request settings - Set normal and error check intervals within your plan limits - Choose how many failures trigger a notification - Review the latest check result HEARTBEAT Let your servers, scripts, or containers report that they are running by sending Heartbeats to Envoh. - View the latest received Heartbeat - Enable absence detection and configure the timeout - Receive notifications when configured Heartbeats stop arriving - Monitor workloads that send outbound requests without exposing a public health endpoint Heartbeat monitoring requires you to configure your server or workload to send requests to Envoh. SSL/TLS CERTIFICATES Track certificate health and expiration dates across your domains. - Monitor SSL/TLS certificates - Receive alerts before certificates expire - Sort certificates by expiration date or name - Filter the list to show your certificates, shared certificates, or both SHARING Give other users read-only access through Share Keys. - Share selected certificates or an entire environment - Follow servers and health updates in shared environments - Claim keys provided by other users - Close or reopen keys to control new claims - Revoke individual access or delete a key to remove access granted through it Closing a key prevents new claims but preserves existing access. Sharing an environment includes its linked server data and monitoring settings. Share only with people authorized to view that information. PLANS AND SUBSCRIPTIONS The free plan includes all monitoring and sharing features, with limits suited to a smaller set of environments, servers, and certificates. Paid plans increase capacity and allow shorter monitoring intervals. Terms of Use: https://envoh.app/web/terms Privacy Policy: https://envoh.app/web/privacy

JWT Decoder, Encoder & Verifier is the JSON Web Token companion your phone has been missing. Paste a token and instantly see its header, payload, and claims decoded - then verify its signature, sign your own, or convert Base64 back and forth. Everything runs on the device. No accounts, no network calls, nothing stored. 100% OFFLINE, NOTHING LEAVES YOUR DEVICE Tokens often carry sensitive data, so this app never uploads them. All parsing, verification, signing, and Base64 work happens locally. There is no server, no logging, and no analytics on the content you paste. It is the safe way to inspect a production token on your phone. DECODE - Live decoding as you type or paste - no "decode" button needed - Pretty-printed JSON for both the header and the payload - Time claims (iat, nbf, exp) shown as readable UTC, with EXPIRED and "not yet valid" badges - Raw Base64URL signature segment displayed separately - Clear, specific errors for malformed tokens VERIFY SIGNATURES - HMAC: HS256, HS384, HS512 with a shared secret (raw or Base64 key) - RSA: RS256, RS384, RS512 (RSASSA-PKCS1-v1.5) with a PEM public key - RSA-PSS: PS256, PS384, PS512 with a PEM public key - ECDSA: ES256, ES384, ES512 with a PEM public key - The input automatically switches between secret and PEM based on the token's algorithm, and the result clearly states valid, invalid, or why it could not be checked SIGN AND GENERATE - Build and HMAC-sign a JWT from any JSON payload (HS256/384/512) - One-tap "Generate key pair" creates a throwaway RSA or EC key for testing, fills the private key, and shows the public key to copy straight into the Verify tab - a complete sign-then-verify loop, entirely on device BASE64 TOOLBOX - Encode and decode standard Base64 and URL-safe Base64URL - Optional padding control - Falls back to a hex view when decoded bytes are not valid UTF-8 text BUILT FOR ENGINEERS - Paste straight from the system clipboard with one tap - Load a built-in example to see how each tool works - Copy any result to the clipboard - Monospace, selectable output throughout POLISHED TO MATCH YOUR PHONE - Native Material Design 3 interface - Light and dark themes that follow the system setting - Localized in English, Traditional Chinese, Simplified Chinese, and Japanese WHO IT IS FOR - Backend and mobile developers debugging auth tokens - Security engineers inspecting and verifying JWTs - QA and support teams checking expiry and claims - Anyone who needs to decode a token without pasting it into a website A note on standards: this tool reads and verifies tokens; it is an inspection and testing utility, not a secrets manager. Keys you paste or generate stay on the device and are never transmitted. JWT Decoder, Encoder & Verifier is fast, private, and made for real debugging. Install it once and stop pasting tokens into random web decoders.