Media
Convert AAC audio files to M4A (MPEG-4 Audio) format with quality and channel controls
aac-to-m4aMedia
Convert AAC audio files to OGG Vorbis format with quality and channel controls
aac-to-oggMath & Numbers
Calculate adjusted R squared from R squared, sample size, and predictor count
adjusted-r-squared-calculatorMath & Numbers
Calculate the absolute value of positive, negative, or decimal numbers and explain the sign relationship
absolute-value-calculatorDesign
Generate a contrast-focused accessibility heatmap from a UI screenshot or HTML input and suggest stronger patch colors
accessibility-heatmap-generatorDevelopment
Audit HTML or a URL for common WCAG issues and export a structured PDF report grouped by severity
accessibility-audit-report-generatorDesign
Audit every color pair in a palette against WCAG 2.1 AA and AAA contrast thresholds and suggest adjustments
accessible-color-palette-contrast-checkerValidation
Detect common WCAG 2.1 accessibility issues in HTML, fetched pages, or design images and return fix-ready guidance
accessibility-checkerFormat Conversion
Embed generated chart images into Excel workbooks using workbook data ranges for bar or pie chart reports
xlsx-chart-embedderFormat Conversion
Batch-apply conditional formatting rules such as threshold highlights, data bars, and color scales to Excel worksheets
xlsx-conditional-formatting-ruleFormat Conversion
Inject Excel sparklines into worksheet cells by patching XLSX sheet XML with sparkline definitions
xlsx-sparkline-injectorFormat Conversion
Fill formulas down worksheet columns and optionally lock formula cells for protected, template-friendly Excel workbooks
xlsx-formula-injector