GuideSecurity
Base64 Is Not Encryption: Encoding vs Secrets
Base64 hides nothing. Why people treat it like a cipher, what it is actually for (data URLs, JWTs, APIs), and how to encode or decode in the browser without uploading a key.
7 min read
DevOkk Blog
Guides that send you to the right tool
How-to articles, category roundups, and fair competitor comparisons for browser-based, privacy-first utilities. Files stay on your device unless a network lookup is the actual job.
GuideSecurity
What Not to Paste Into Online Developer Tools
JWTs, API keys, customer JSON, and password checkers: a practical list of what to keep off random websites, and which jobs can stay in the browser.
7 min read
GuideSecurity
How to Generate a Strong Password in the Browser
High-entropy passwords generated on-device. Nothing sent to a server.
5 min read
GuideSecurity
What Is a JWT? How to Decode a Token Without Sharing It
Header, payload, signature - decode locally so tokens never hit a website.
5 min read
GuideSecurity
How to Check Password Strength Before You Reuse It
Strength analysis in the browser. The password is not stored or transmitted.
4 min read
GuideSecurity
MD5 vs SHA-1 vs SHA-256: What Hashes Are For
Hashing vs encryption, collisions, and local checksums.
5 min read
GuideSecurity
How to Decode URL-Encoded Query Strings
Percent-encoding and query params, decoded locally while debugging.
4 min read
GuideSecurity
How to Encode and Decode Base64 (Without a Server)
Data URLs, tokens, APIs - encode and decode privately.
5 min read
GuideSecurity
How to Encode HTML Entities and Avoid XSS Pitfalls
Entity encoding for safe HTML display.
5 min read
GuideSecurity
UUID Versions Explained: v1, v3, v4, and v5
Pick a UUID version and generate IDs locally.
5 min read
GuideSecurity
How to Convert Binary, Decimal, Hex, and Octal
Number bases for debugging and coursework, converted on-device.
4 min read
GuideSecurity
What File Metadata Reveals About You
EXIF GPS, authors, software tags - inspect before you share.
5 min read
GuideSecurity
A Practical Privacy Checklist Before You Share a File
Metadata, PDFs, and cloud converters: a local-tool checklist.
5 min read
GuideSecurity
How to Remove EXIF and Document Metadata Before Sharing
Strip location and author data in the browser.
5 min read