Image Guides
Image Compression and Web Formats: A Practical Guide
Choose between JPEG, PNG and WebP, resize images intelligently, and reduce file size without hiding important visual damage.
HELP & GUIDES
LipiCode Guides
Practical guides, tips and examples to help you get more from your tools. Understand each workflow and choose the right approach for your next task.
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18 guidesPDF & Documents
PDF Conversion Quality: What Transfers and What Does Not
Understand why PDF and Word conversions differ, when OCR is necessary, and how to verify a converted document.
Developer Guides
Base64 Encoding Explained Without the Mystery
Learn what Base64 changes, why encoded data becomes larger, and where it belongs in APIs, email and data URLs.
Developer Guides
UUID Versions and Practical Identifier Choices
Compare random, time-ordered and namespace-based UUIDs and avoid confusing uniqueness with authorization.
Security Guides
How to Inspect and Debug JWTs Safely
Read JWT claims without mistaking decoding for verification, and diagnose expiry, issuer, audience and signing problems.
Everyday Tools
Reliable QR Codes and Barcodes for Real-World Printing
Choose the right code, preserve quiet zones and contrast, and test labels at their final physical size.
Image Guides
Crop, Resize or Compress? Choose the Right Image Operation
Understand which operation changes composition, dimensions, or file size and apply them in the correct order.
Image Guides
Website Image Sizing and Delivery Checklist
Prepare responsive website images with sensible dimensions, formats, fallbacks, quality checks, and accessible alternatives.
Security Guides
Hashing, Encoding and Encryption Are Not Interchangeable
Choose the correct operation for transport, integrity, confidentiality, or password verification.
Developer Guides
SQL Joins Explained Through Result Sets
Reason about inner and outer joins, duplicate rows, missing matches, filters, and safe query review.
Everyday Tools
Loan Payments and Amortization: Reading the Estimate
Understand principal, periodic interest, term length, amortization schedules, fees, and why lender figures can differ.
Everyday Tools
UTC, Time Zones and Daylight-Saving Rules
Represent instants reliably, distinguish offsets from named zones, and handle ambiguous local times.
Image Guides
Accessible Colour Palettes Need More Than Harmony
Use contrast, non-colour cues, semantic roles, and real-state testing to turn a palette into an accessible interface.
Image Guides
Passport Photo Preparation and Submission Checklist
Prepare a neutral, correctly framed portrait while recognizing that the issuing authority makes the final acceptance decision.
Security Guides
Strong Passwords, Passphrases and Token Hygiene
Generate unique credentials, store passwords correctly, handle tokens as secrets, and understand what hashing does.
PDF & Documents
Word Counts, Character Limits and Readability
Interpret writing metrics consistently without mistaking a target number for clear communication.
Developer Guides
CSV and JSON Conversion: Keep Identifiers and Quoted Fields Intact
Work through leading zeroes, embedded commas, missing values and spreadsheet formulas before sharing a converted table.
Developer Guides
Inspect URL Parameters Without Losing Repeated Values
Separate a URL into its parts, understand plus signs and repeated query keys, and check a report before sharing it.