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