katlab

Privacy & security tools

Clean files before you share them, check files before you trust them, and encrypt or sign what matters. Everything stays on your device.

No uploads · no accounts · no tracking

Before you share

Photo Privacy
Black out, pixelate or blur faces, plates & text; removes location — locally, no upload.
Safe ID Copy
Cover numbers on an ID or passport copy and mark who it is for — locally, no upload.
EXIF Metadata Remover
Strip GPS & camera data from JPG, PNG & WebP — locally, no upload.
Metadata Remover
Remove author, company, comment names & photo GPS from PDF, Word, Excel & PowerPoint — no upload.
Log Redactor
Mask emails, IPs, cards & API keys in logs before you share them.

Before you trust

Archive Virus Scanner
Scan a ZIP, RAR or 7z for malware, malicious macros, shortcuts & zip bombs before you open it — no upload.
Check a PDF
Spot edits, painted-over text, changes after signing and fake links — locally, no upload.
APK & IPA Analyzer
See an app's permissions, trackers, signature & files before installing it, with a malware scan — no upload.

Encrypt & protect

File Encryptor
Encrypt any file with a passphrase or public key in the open age format, any size — no upload.
PGP Tool
Encrypt, decrypt, sign & verify PGP messages and files, create keys — GnuPG compatible, no upload.
Protect PDF
Add an AES-256 password & restrict printing or copying — locally, no upload.
Password Generator
Strong random passwords, crypto-secure — locally, no upload.

Keys, certificates & 2FA

SSH Key Generator
Ed25519, ECDSA & RSA keys in OpenSSH format — generated locally.
CSR Generator
Create a CSR & private key with all your domains, or a self-signed cert — key stays local.
Certificate Decoder
Inspect X.509 / PEM certificates — SANs, expiry, fingerprints, chains.
PFX / P12 Converter
PFX to PEM and PEM to PFX: certificate, chain & key, legacy files fixed — no upload.
htpasswd Generator
bcrypt & apr1 lines for Apache / nginx basic auth, plus verify.
2FA Toolkit
Decode Google Authenticator exports & otpauth links, live codes, move accounts — offline.

Other categories