Articles
Practical guides for SmartPlusLab online tools.
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How to Generate Favicon HTML and SVG Markup
Provide an optional icon URL, choose the SVG emoji and colors, and generate the HTML and SVG favicon markup. A site title may be entered, but it does not change the generated markup.
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How to Generate Fake Personal Data for Testing
Set a quantity, choose matching attributes, optionally pass a locale value, and run the generator. Check the returned randomized entries against your test fields while accounting for quantity, format, and selection rules.
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How to Use a Factorial Calculator
The Factorial Calculator calculates factorials, permutations, and combinations. It accepts optional n and r inputs, with factorial mode and 0 as the defaults.
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How to Convert CSV Text to JSON
Paste your CSV text, choose whether its first row supplies field names, set the JSON indentation if needed, and run the conversion. The tool returns JSON-formatted records and reports the number of records produced.
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How to Convert Energy Units
Enter an energy value, choose its source unit and the target unit, then run the conversion. If you omit the value or units, the converter uses 0, joules, and kilowatt-hours as the respective defaults.
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How to Find an Emoji by Name or Category
Search the built-in collection with part of an emoji name, or select a supported category to browse matching entries. Set a positive limit when you want the returned set shortened.
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How to Extract Email Addresses from Text
Paste text into Extract Emails, choose how repeated matches should be handled, and run the extraction. You receive matching address-shaped entries together with their count.
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How to remove duplicate lines from text
Remove Duplicate Lines keeps the first occurrence of each distinct newline-separated line and removes later repeats. You can control case comparison, whitespace trimming, and the order of retained lines.
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How to Remove Duplicate Lines from Text
Paste your line-based text, keep Remove selected, and process it to omit later repeated positions while retaining the first recorded occurrence. Change the case comparison setting when capitalization should distinguish or group entries.
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How to Look Up DNS Records for a Domain
Enter a domain, choose one supported DNS record type, and submit the lookup. The result shows returned record values and related response details, or reports why the lookup failed.
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How to Use a Discount Calculator
Enter a numeric original price and discount percentage to receive the adjusted price, savings amount, and final price. Values below the supported bounds are adjusted before the discount calculation is performed.
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How to Calculate the Day of the Year
Enter a date as `YYYY-MM-DD` to find its numbered position in the year. You can instead provide the year, month, and day together, then review the day number and related calendar details.