WebP Express Photo Converter at Mac App Store analyse

Convert images to WebP and six other formats — PNG, JPEG, JPEG 2000, TIFF, BMP, and HEIC — with real-time size estimation before you commit to a conversion. Unlike your Mac's built-in single-file Export As or web tools that require uploads, WebP Express Photo Converter gives web developers and photographers a three-panel batch workflow built for macOS: file grid on the left, full-size preview in the centre, quality controls on the right. ▸ BATCH CONVERSION — UP TO 500 IMAGES Drop up to 500 images into the file grid via drag-and-drop or the file browser. The app processes all files concurrently using every available CPU core — not one at a time, all at once, capped at your processor count for optimal throughput. ▸ PREVIEW YOUR FILE SAVINGS Before running a batch, click Estimate to preview the converted file size and percentage savings with your current quality settings. An in-memory conversion calculates the exact output so you know your savings before writing a single file to disc. ▸ 7 OUTPUT FORMATS Export to WebP (lossy or lossless), PNG, JPEG, JPEG 2000, TIFF (None, LZW, or PackBits compression), BMP, or HEIC. One app handles WebP, HEIC, and JPEG 2000 alongside PNG, JPEG, TIFF, and BMP — no separate tool for each. ▸ FINE-TUNE COMPRESSION QUALITY Adjust lossy compression from 0.0 to 1.0 with a quality slider for WebP, JPEG, JPEG 2000, and HEIC output. Three quality presets — Low (0.5), Medium (0.75), and High (0.90) — snap the slider to common values with one tap. Toggle WebP lossless encoding with a single switch — no settings dialogs, no command-line flags. ▸ SAVE TO SOURCE FOLDER A single toggle exports converted images directly alongside their source files — no separate output folder to navigate. When toggled off, choose any destination folder via the standard export dialog. ▸ TRACK EVERY FILE RESULT A collapsible bottom panel logs every converted file with a timestamp, success or failure status, output size, and processing duration — no guessing which files succeeded or how long each one took. ▸ EXPORT WITH PROGRESS A modal progress sheet shows real-time file count, current filename, and a progress bar. Cancel mid-batch and keep the files already converted. When conversion finishes, Reveal in Finder opens your output directory for immediate access. ▸ THREE-PANEL LAYOUT The file grid shows thumbnail previews of every imported image. Select any file to see a full-size preview with dimensions, format, and file size. The Convert button is pinned at the bottom of the inspector panel — always accessible without scrolling, regardless of which format is selected. Built with native macOS window controls, system dark mode, and a sage-green accent theme that follows your system appearance. All processing runs locally — no uploads, no cloud accounts, no internet connection required. One-time purchase — no subscription, no account, and every conversion stays on your Mac. WebP Express Photo Converter is a focused tool for photographers and web developers who convert images daily and need to see their savings before they commit. Requires macOS 15 or later.