Guides

Logo guides and case studies

Case studies on how well-known logos changed, with every date traced to a cited source, and practical checklists for preparing and handing over logo files.

Case studies

How logos changed, with sources

3 articles

Technology · 7 min read

The Apple logo, 1976 to today: what the record shows

Ronald Wayne’s Newton illustration, Rob Janoff’s striped apple, the move to a single colour and the typefaces around the mark, with each date traced to a source.

  • Apple
  • Rob Janoff
  • Ronald Wayne
  • Typography

Updated · AI-assisted draft with cited sources

Financial services · 8 min read

Fintech logos: Chase, PayPal, Wise, bKash and a worked contrast check

What the sources record about four financial brands’ marks, and a WCAG contrast calculation that shows why one colour cannot reach 4.5:1 on both white and a dark-mode background.

  • bKash
  • PayPal
  • Wise
  • Chase
  • WCAG contrast

Updated · AI-assisted draft with cited sources

Automotive · 7 min read

Why carmakers flattened their logos, 2019–2024

Volkswagen, BMW, Nissan, Kia, Audi, Ford and Honda moved to two-dimensional marks. Here is what each company said about the change, and what it means for the files you download.

  • Volkswagen
  • BMW
  • Nissan
  • Kia
  • Honda

Updated · AI-assisted draft with cited sources

Working with logo files

Practical guides

6 checklists

Methods and limits

How the archive records history

Read how SimilarLogo separates a file’s source from its visual checks and from dated history, and what the archive cannot confirm.

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