Niva Tools Guides
Browse clear tutorials that explain how to use online utilities safely and effectively. Each guide connects to a free Niva Tools workflow.
Guide
Learn practical image compression settings for JPG, PNG and WebP files, including format choices, quality levels and resizing tips.
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Learn how to create QR codes with good contrast, clean margins, suitable size and safer content choices for print or digital sharing.
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Understand when to use JPG, PNG or WebP and how to choose the right output format for websites, forms and everyday sharing.
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A practical guide to merging, splitting, rotating and creating PDFs while keeping source files organized and outputs checked.
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Learn practical ways to count words, change case, remove duplicate lines, generate slugs and clean copied text for everyday work.
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Learn what information a basic invoice should include and how to review totals, tax, discounts and client details before sending.
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