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  1. How to Create a Password-Protected ZIP File (AES-256)

    · 3 min read

    Put files and folders in a ZIP with a password, choose between AES-256 and ZipCrypto, and know what a ZIP password does and doesn't hide from others.

  2. Fix Invalid JSON: The 8 Most Common Errors and How to Spot Them

    · 3 min read

    Find and fix the JSON mistakes that break APIs and config files: trailing commas, single quotes, comments, unquoted keys and more, with exact line and column.

  3. How to Create a Strong Password You Can Actually Use

    · 3 min read

    Why length beats symbols, how passphrases work, what makes "P@ssw0rd123!" weak, and a simple system for unique passwords on every account without forgetting them.

  4. How to Calculate GST: Add It, Remove It, and Split CGST and SGST

    · 2 min read

    The formulas for adding GST to a price and taking it out of an inclusive amount, how CGST, SGST and IGST split, and common mistakes on quotes and invoices.

  5. How to Make a Ringtone From Any Song (iPhone and Android)

    · 3 min read

    Cut the best part of a song into an iPhone .m4r or Android MP3 ringtone with a soft fade, then learn how to set it as your ringtone on each phone.

  6. How to Compress a Video for WhatsApp, Email or Upload Limits

    · 3 min read

    Shrink a phone video to a target size in MB without making it unwatchable: choose the right resolution, trim the extras, and understand what affects size.

  7. How to Merge PDF Files Into One, in the Right Order

    · 3 min read

    Combine several PDFs into a single document, arrange the pages exactly as you want, and keep the original quality, without uploading anything.

  8. How to Compress Images for a Website Without Losing Quality

    · 3 min read

    Make photos load fast on your website: pick the right format, resize before compressing, and find the quality setting where nobody can see a difference.

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