Guides & tutorials
Short walkthroughs to get more out of each tool.
How to decode JWT safely
Inspect tokens locally first; verify signatures only on the server.
Format and minify JSON without surprises
Use pretty-print for review and minify for transport—know when each helps.
Validate JSON before you ship a config change
Catch syntax errors early; pair validation with review for semantic correctness.
Practical tips for regex testing
Iterate patterns with small samples; watch flags and catastrophic backtracking.
Base64 vs URL encoding: pick the right transform
They solve different problems—do not interchange them blindly.
Unix timestamps: seconds vs milliseconds
Know the unit before you convert—off-by-1000 bugs are common.
Choose PDF merge vs split for your workflow
Merge combines documents; split extracts pages—pick based on delivery and review needs.
Compress images before slow uploads
Resize for layout, compress for bytes—check visual quality on real devices.
From CSV to JSON: watch headers and types
Headers become keys—normalize names before converting at scale.
Use a diff when configs drift
Compare text snapshots to catch unintended edits before rollout.