Side-by-side or overlay PDF diff driven by one engine that reads each file into a structured model — text, vector geometry, images, form fields, annotations — and compares the models. Moves show as moves, edits show only where they happened, and any PDF type works without picking a mode.
Open a STEP / STP part and it measures itself — volume, thinnest wall, draft and undercut checks on load, plus hole detection with a BOM. Measure, section, export STL. Rust + WASM B-rep kernel, runs in your browser.
Read IDs, encrypt files, and decode tokens in your browser
Read a passport or ID card's machine-readable zone and verify its check digits with the MRZ Reader, or lock a file with a passphrase in File Encryption. Secure Note Sharing turns a note into an encrypted link, Identity Inspector decodes JWTs, SAML, and certificates, and EVTX Explorer opens Windows event logs with SIGMA detections.
Try clearing filters or adjusting your search — most categories have dozens of tools once you widen the net.
About these security tools
Tools for data that should stay on your device. Encrypt a file with AES-256 and a passphrase, share the encrypted file anywhere, and decrypt it only with that passphrase. Turn a note into an encrypted link with an optional password and expiry: the note travels inside the link itself, so no server stores it. Paste a certificate, JWT, SAML response, or OIDC discovery document into Identity Inspector to check validity, expiry, and claims without handing a token full of personal data to a vendor. Read a passport or ID card MRZ and validate its check digits, or triage a Windows .evtx event log with SIGMA detections and logon-session reconstruction. Files, tokens, and logs are processed in your browser and never sent to a server.
Frequently Asked Questions
What does the file encryption tool actually do?
AES-256 client-side encryption. Pick a file, set a password, get an encrypted .enc file you can share anywhere. Decryption uses the same password — without it, the ciphertext is unreadable. Encryption and decryption both run entirely in your browser; no file or password ever leaves your device.
How do encrypted note links work?
Compose a note and the tool encrypts it with AES-256-GCM in your browser, then packs the encrypted note into the part of the link after the #, which browsers never send to a server. Add a password and an expiry if you want them. No server stores the note, so nothing can delete it: anyone with the link can open it until it expires, and the browser that opens it marks it as read.