8 minute read
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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.
LIPICODE LEARNING CENTRE
Practical guidance,
Practical guidance,
not just another tool.
Understand the decisions behind common online tasks, avoid preventable mistakes, and get a more reliable result from the first attempt.
✓
Written and manually reviewedLipiCode Editorial Team · Updated August 13, 2026
FIELD NOTES
Choose a workflow to understand
Each guide explains trade-offs, checks and common failure points, then links directly to the relevant LipiCode tools.
7 minute read
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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.
6 minute read
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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.
7 minute read
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UUID Versions and Practical Identifier Choices
Compare random, time-ordered and namespace-based UUIDs and avoid confusing uniqueness with authorization.
8 minute read
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How to Inspect and Debug JWTs Safely
Read JWT claims without mistaking decoding for verification, and diagnose expiry, issuer, audience and signing problems.
7 minute read
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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.
7 minute read
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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.
8 minute read
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Website Image Sizing and Delivery Checklist
Prepare responsive website images with sensible dimensions, formats, fallbacks, quality checks, and accessible alternatives.
8 minute read
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Hashing, Encoding and Encryption Are Not Interchangeable
Choose the correct operation for transport, integrity, confidentiality, or password verification.
9 minute read
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SQL Joins Explained Through Result Sets
Reason about inner and outer joins, duplicate rows, missing matches, filters, and safe query review.
9 minute read
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Loan Payments and Amortization: Reading the Estimate
Understand principal, periodic interest, term length, amortization schedules, fees, and why lender figures can differ.
8 minute read
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UTC, Time Zones and Daylight-Saving Rules
Represent instants reliably, distinguish offsets from named zones, and handle ambiguous local times.
8 minute read
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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.
8 minute read
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Passport Photo Preparation and Submission Checklist
Prepare a neutral, correctly framed portrait while recognizing that the issuing authority makes the final acceptance decision.
9 minute read
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Strong Passwords, Passphrases and Token Hygiene
Generate unique credentials, store passwords correctly, handle tokens as secrets, and understand what hashing does.
7 minute read
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Word Counts, Character Limits and Readability
Interpret writing metrics consistently without mistaking a target number for clear communication.