Articles
Practical guides for SmartPlusLab online tools.
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How to Convert JSON or CSV to a Markdown Table
The tool converts JSON or CSV text into Markdown table text, with optional custom headers and left, center, or right alignment. Empty input fails, while empty JSON values produce an empty-table result.
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How to Convert Delimited Text to a Markdown Table
Paste at least two nonblank lines of delimited text, choose the separator used between cells, set header handling and alignment, and convert. The result is Markdown table text that you can review and copy.
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How to Preview Markdown as Formatted HTML
Enter Markdown-like text, process it, and inspect the resulting formatted HTML preview. Empty or omitted text succeeds with an empty preview, while non-empty text also returns the character count for the original source.
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How to Generate Random MAC Addresses
Set the quantity and formatting controls, optionally provide a colon-containing prefix, and start generation. The tool returns one random MAC address string for each normalized quantity.
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How to Generate a Specific Number of Lorem Ipsum Words
Choose words as the unit, enter the quantity, and generate the placeholder text. The tool normalizes the count and returns that number of Lorem Ipsum words, with the first word capitalized.
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How to Generate Lorem Ipsum Placeholder Text
Choose a style, select words, sentences, or paragraphs, set a count from 1 through 100, and generate the placeholder text. Use the opening and paragraph-tag options when their paragraph-specific formatting suits your layout.
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How to Use a Logarithm Calculator
Enter a positive value, choose the mode, and provide a valid base when the calculation needs one. The calculator returns a rounded result for supported inputs, or an unsuccessful calculation when validation fails.
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How to Calculate Monthly Loan Payment from Interest Rate and Term
Learn how to calculate your monthly loan payment from the loan amount, interest rate, and term in years, complete with a worked example and amortization breakdown.
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How to Add Line Numbers to Text
Paste the text, choose the starting number and formatting options, and inspect the processed result. Blank-line numbering changes when skipping is enabled.
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How to Convert Length Values Between Units
Enter a length value, select its source and target units, and run the conversion. A successful result uses a supported unit pair and is rounded to 10 decimal places.
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How to Use a Keyword Density Checker
Paste your text, enter an optional keyword or phrase, and run the analysis. The checker reports word frequency and, for a nonblank keyword, its whole-phrase occurrence count and rounded density.
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How to Generate a JWT with JSON Payload and HMAC-SHA256
Enter valid JSON payload text and an optional secret, then generate the token. A successful result is a nonempty token with three dot-separated sections, signed with HMAC-SHA256.