Tools
30 articles in this category.
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How to create a strong password: length, randomness and the Password Generator
Why long random passwords beat clever ones, how password strength is measured in bits, how to use the free Password Generator, and the habits that actually protect your accounts.
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Hidden characters in copied text: how to find and remove them
What zero-width spaces, non-breaking spaces and other invisible Unicode characters are, how they break code, forms and searches, and how to clean them with the free Invisible Character Cleaner.
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Image Color Picker guide: read HEX and RGB values and build a palette from any photo
How to pick an exact colour from an image, what HEX and RGB values mean, how to check that two colours are readable together, and how to turn a photo into a small colour palette.
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Hashing vs encoding vs encryption: a guide to the Hash & Encode Toolkit
The difference between hashing, encoding and encryption, what Base64, Base32, Base16 and SHA-256 are for, and how to use the free Hash & Encode Toolkit without making common security mistakes.
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HTML Viewer guide: preview HTML, CSS and JavaScript safely in your browser
How to test HTML, CSS and JavaScript snippets in a live preview, why the sandbox keeps your page safe, and the common reasons a snippet looks different from what you expected.
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Markdown Viewer guide: write Markdown and see the result as you type
What Markdown is, the syntax you will use every day, how to preview it side by side with the free Markdown Viewer, and the mistakes that make a page look different from what you expected.