TinyPNG MCP Server

import * as fs from 'fs' import * as path from 'path' import tinify from 'tinify' import { isSupportedImageFile } from './fileUtils.js' import type { ResizeMethod } from './types.js' /** * Resize an image using TinyPNG resize API. * * @param imagePath Path to the input image file. * @param width Target width in pixels. * @param height Target height in pixels. * @param method Resize method ('fit', 'scale', 'cover', 'thumb'). * @param outputPath Optional output path. If not provided, will overwrite the original file. * @returns Promise that resolves when resize is complete. */ export async function resizeImage( imagePath: string, width: number, height: number, method: ResizeMethod, outputPath?: string, ): Promise<void> { /* Validate input file exists */ if (!fs.existsSync(imagePath)) { throw new Error(`Input file does not exist: ${imagePath}`) } /* Validate file is supported image format */ if (!isSupportedImageFile(imagePath)) { throw new Error(`Unsupported image format: ${path.extname(imagePath)}`) } /* Validate dimensions */ if (width <= 0 || height <= 0) { throw new Error('Width and height must be positive numbers') } const finalOutputPath = outputPath ?? imagePath /* Ensure output directory exists */ const outputDir = path.dirname(finalOutputPath) if (!fs.existsSync(outputDir)) { await fs.promises.mkdir(outputDir, { recursive: true }) } return new Promise((resolve, reject) => { try { const source = tinify.fromFile(imagePath) /* Apply resize with the specified method */ const resized = source.resize({ method, width, height, }) resized.toFile(finalOutputPath, (err: any) => { if (err) { reject(new Error(`Failed to resize image: ${err.message}`)) } else { resolve() } }) } catch (error) { reject(new Error(`Failed to process image: ${error instanceof Error ? error.message : 'Unknown error'}`)) } }) }