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  1. How to Open iPhone HEIC Photos on Windows and Android

    · 3 min read

    iPhone photos saved as HEIC won't open everywhere. Learn what HEIC is, how to convert it to JPG for free, and how to stop your iPhone making HEIC files.

  2. 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.

  3. 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.

  4. 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.

  5. 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.

  6. 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.

  7. 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.

  8. 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.

  9. 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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