Articles
Practical guides for SmartPlusLab online tools.
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How to Convert Images to Grayscale
Supply readable image data, choose the default luminosity method or enter `average` for channel averaging, and start the conversion. A successful result contains encoded grayscale image data and the original image dimensions.
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How to Apply Artistic Filters to Images
Supply decodable image data, select a supported artistic filter, and process it. A successful result returns the filtered image data, the selected filter, and the image dimensions.
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How to Crop an Image to a Rectangular Region
Provide non-empty image data and four numeric bounds for the rectangular area to keep. A successful crop is returned as base64-encoded image data.
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How to Convert an Image to Another Format
Supply image data, choose PNG, JPEG, WEBP, GIF, BMP, or TIFF, and submit the conversion. Quality defaults to 90 and is used for JPEG or WEBP output only.
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How to Reduce JPEG File Size by Adjusting Quality
Learn how to reduce JPEG file size by adjusting the compression quality setting from 1 to 95. Follow practical steps, review byte metrics, and avoid common errors.
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How to Use an Image Color Picker
Provide an image file, optionally choose a numeric color count, and run the analysis to receive dominant colors with RGB, hexadecimal, pixel-count, and percentage details. The analysis also reports the original image dimensions and the number of distinct colors counted.
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How to Combine Images Into a Grid Collage
Use Image Collage to arrange at least two Base64-encoded images in a grid. Choose the columns, background, and padding, then read a successful result as PNG image data.
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How to Adjust Image Brightness with a Base64 Image
Provide base64-encoded image data, optionally set a brightness factor from 0.0 through 3.0, and start the adjustment. A successful result is base64-encoded adjusted image data with the source dimensions preserved.
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How to add a colored border to an image
Provide a nonempty base64-encoded image, choose a border width and a six-digit hexadecimal color, then submit it to receive bordered image data and dimension details when processing succeeds.
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How to Apply a Gaussian Blur to an Image
Select an image, set a numeric blur radius, and start the operation. When processing succeeds, you receive encoded blurred image data together with the original image dimensions.
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How to Generate Fake IBANs for Testing
Enter a count from 1 through 20, choose a supported country when the format matters, and start the IBAN Generator. Treat the returned values as fake testing data rather than real bank-account credentials.
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How to look up HTTP status code meanings
Enter a recognized positive status code to see its name, category, and description, or browse the built-in entries with a category filter. This reference does not check a live server.