Guides & tutorials
Short walkthroughs to get more out of each tool.
Word count and reading time for editors
Count words first, then estimate reading time with an explicit words-per-minute assumption.
Unit converter for data demos
Quick length, weight, and temperature conversions for specs, stories, and classroom demos.
robots.txt and sitemap.xml basics
robots guides crawlers; sitemap lists URLs you want discovered—use both on launch day.
Meta tags and Open Graph launch checklist
Ship title, description, and social cards together so crawlers and chat apps see the same story.
Line sort and dedupe for incident logs
Normalize noisy log extracts before you paste them into tickets or diff tools.
Image format conversion for faster pages
Serve WebP or AVIF to modern browsers while keeping PNG fallbacks for email and legacy clients.
IBAN check before payout testing
Validate structure with MOD-97 in sandboxes—never treat format checks as ownership proof.
Credit card Luhn testing only
Use test PANs to verify forms—Luhn does not authorize charges or prove card ownership.
Slug and meta tags for launch pages
Ship readable URLs and consistent Open Graph tags in one pass.
Semver bump before release
Patch for fixes, minor for features, major for breaking changes—write it down in the changelog.
Parse .env files before deploy
Catch duplicate keys and invalid names before they break staging boot.
JSON to TypeScript for API types
Turn a sample response into interfaces, then refine names in code review.
gitignore templates for new repositories
Start from a stack-specific template instead of copying an old repo wholesale.
YAML and JSON for config files
Pick the format your runtime reads; convert only when you control both sides.
Validate UUIDs before database insert
Catch malformed IDs at the edge instead of in database error logs.
UUID v4 in distributed systems
Random UUIDs reduce coordination; they are not a substitute for sequential business IDs.
QR code error correction and size
Higher correction tolerates damaged prints; larger modules scan faster on posters.
Compress PDFs for email attachments
Balance size limits with readable text—test one page before compressing the whole deck.
Markdown to HTML for docs sites
Convert prose for previews; still run your static site generator for production HTML.
Resize images for responsive layouts
Export exact widths your layout uses—avoid shipping 4000px sources to mobile.
Decode QR codes from uploaded images
Screenshots and photos work—lighting and blur matter more than file format.
When to beautify vs minify markup
Beautify for humans, minify for bytes—do not mix the two goals in one step.
Validate OpenAPI before every release
Catch broken contracts early—missing paths, info blocks, or version drift.
Use a SQL formatter in code review
Consistent SQL diffs reduce noise and surface logic changes faster.
Minify JS and CSS for production builds
Ship smaller assets without debugging minified source during development.
HTML entity encoding in APIs and templates
Escape user content before embedding into HTML or JSON string fields.
HMAC signing for webhooks
Use a shared secret and a stable algorithm—verify on the server, never trust client-side checks alone.
HEX, RGB, and HSL in design handoffs
Convert colors once and paste consistent values into CSS, tokens, and docs.
Format XML config files safely
Readable XML helps reviews; validate against consumers before merge.
Format HTML before you publish
Readable markup catches nesting mistakes early and speeds up PR review.
Binary and hex for low-level debugging
When logs show integers in hex, convert bases before guessing bit masks.
HTTP response debugging checklist
A practical checklist to isolate API failures by status code, headers, and payload shape.
API debugging with HTTP Request tool
Use one workbench to compose method, headers, query, auth, and body without switching apps.
SVG Optimization for Modern Web Apps
Reduce bundle size and improve performance by cleaning up SVGs.
Best Practices for Secure Password Generation
Why entropy and character diversity matter for your security.
Cron parser tips for ops handovers
Turn cron expressions into readable schedules before incident reviews and shift handovers.
Understanding Base64 Encoding and Its Use Cases
How Base64 works and when to use it for binary-to-text conversion.
Use JSON String Escape for API payload safety
Escape raw text before embedding into JSON to prevent quoting and control-character errors.
Use a diff when configs drift
Compare text snapshots to catch unintended edits before rollout.
From CSV to JSON: watch headers and types
Headers become keys—normalize names before converting at scale.
Compress images before slow uploads
Resize for layout, compress for bytes—check visual quality on real devices.
Choose PDF merge vs split for your workflow
Merge combines documents; split extracts pages—pick based on delivery and review needs.
Unix timestamps: seconds vs milliseconds
Know the unit before you convert—off-by-1000 bugs are common.
Base64 vs URL encoding: pick the right transform
They solve different problems—do not interchange them blindly.
Practical tips for regex testing
Iterate patterns with small samples; watch flags and catastrophic backtracking.
Validate JSON before you ship a config change
Catch syntax errors early; pair validation with review for semantic correctness.
Format and minify JSON without surprises
Use pretty-print for review and minify for transport—know when each helps.
How to decode JWT safely
Inspect tokens locally first; verify signatures only on the server.