Tutorials, deep-dives, and privacy-first thinking about developer tools.
Showing 73–84 of 105 posts
URL encode online without leaking auth tokens, S3 links, or password-reset codes. Here's where pasted URLs actually end up — and how to encode privately.
encodeURIComponent vs encodeURI trips up every JavaScript dev once — here's the actual rule, the characters each protects, and when to pick which in 2026.
A Unix timestamp is the 10-digit number in every log line — here's what it means, why timezones don't apply, and how to convert it without bugs in 2026.
Decode a JWT in 2026 with real Auth0 and Firebase tokens — header, payload, signature explained, common debugging traps, and why pasting tokens online is risky.
Why URLs use + for spaces, when to use %20 instead, and how to encode a literal + as %2B. Covers the 30-year-old form-encoding quirk that still breaks emails with `+` in 2026.
URL encoding looks simple until your API drops a plus sign. Here's the real difference between component, URI, and form encoding — with code, fixes, and 2026 rules.
Looking for an Appicon.co alternative? iKit's browser-only app icon generator outputs the same iOS, Android adaptive, and PWA icons — without uploading your source PNG to any server.
What does JSON decode actually mean? It's not the same as parse or validate — and confusing them ships bugs. Three operations, finally distinguished.
A side-by-side test of five free online Markdown editors — privacy, GFM support, live preview, and load speed compared so you can pick one in 2026.
The exact image dimensions for every Instagram, X, and LinkedIn placement in 2026 — feed, story, header, banner, profile — plus a one-click resize workflow.
Decode Base64 strings into a real downloadable file — PDF, image, ZIP, audio — directly in your browser. No upload, no server, no plaintext leaks.
Generate the 1024×1024 App Store icon plus every iPhone, iPad, Spotlight, and Settings size from one PNG. Free, no upload, transparency stripped — ready for App Store Connect in 30 seconds.