Articles
Practical guides for SmartPlusLab online tools.
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How to Crop PDF Margins on Every Page
Enter separate numeric adjustments for the left, right, top, and bottom margins, then submit a decodable PDF string. When processing succeeds, those adjustments are applied to every page.
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How to Compress a PDF
Provide the PDF as base64 text, run the compression operation, and inspect the returned processed PDF and size measurements. The result can be larger, unchanged, or smaller, so compare the reported byte counts.
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How to Use a Password Strength Checker
Enter a password string to see a strength score, label, character categories, entropy estimate, estimated crack-time band, and pattern feedback. An empty field is accepted and returns a zero-score result.
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How to use a password generator
Choose a password length, quantity, and character categories, then generate the password list. Interpret the returned strings using the applied numeric bounds and the selected character pool.
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How to Use a Palindrome Checker
Enter text and submit it to compare its normalized form with its reverse. Then review the separate longest-portion and word-related findings for additional context.
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How to Generate a TOTP or HOTP Code
Learn how to generate standard 6-digit and 8-digit TOTP and HOTP one-time passwords from Base32 secrets using HMAC-SHA1 step-by-step.
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How to Use Open Graph Preview for Social-Sharing Metadata
Enter a title, add the social-sharing values you want represented, and review the generated metadata markup. A blank title still succeeds, but it produces no metadata entries.
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How to Generate Open Graph Meta Tags
Enter a non-empty title and description, add optional page metadata as needed, then generate the escaped Open Graph markup. The result includes title and description elements, with optional image, URL, and site-name elements based on the values you supply.
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How to Convert a Number to English Words
Enter a number, start the conversion, and read the resulting English wording. Empty input uses 0, and the value is converted to an integer before validation.
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How to generate a number sequence
Choose a supported mode, adjust the optional numeric inputs, request between 1 and 1000 terms, and submit the calculation. A successful result contains the sequence and a summary with its total, endpoints, minimum, and maximum.
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How to Generate a Random Number List
Enter a minimum, maximum, and count, then optionally enable ascending sorting to generate a list of distinct random integers. Keep the minimum below the maximum and the count between 1 and the inclusive range size.
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How to Extract Numbers From Text
Enter text, choose whether to keep decimal points and repeated matches, then run the extractor to review the matched tokens and their basic statistics.