Image Aspect Ratio Checker & Bulk Calculator
Check and calculate dimensions and aspect ratios for multiple images in bulk. Compare against 16:9, 4:3, and custom ratios with mismatch detection.
Check and Compare Image Aspect Ratios in Bulk
Managing standard image dimensions is critical for web development, responsive layouts, and social media production. This tool processes multiple image files at once directly in your browser, instantly calculating pixel dimensions, simplified aspect ratios, and decimal values. Set a target ratio such as 16:9 or 4:3 with custom tolerances to isolate non-compliant images immediately.
Upload Images
Drag and drop your image files into the upload area or click "Select Images". Supports batch processing for JPEG, PNG, WebP, GIF, SVG, BMP, and AVIF formats.
Specify Target Ratio (Optional)
Select a preset like 16:9, 4:3, or 1:1, or enter a custom ratio. Set a tolerance threshold (default: ±0.01) to automatically filter mismatched files under the "Error Only" tab.
Inspect and Export CSV
Review width, height, aspect ratio, target comparison, and difference values. Click any thumbnail to inspect details in an enlarged modal, then download the full dataset as a CSV file.
Batch Aspect Ratio Calculation
Processes multiple images simultaneously to determine precise dimensions and simplified ratios.
Ratio Mismatch Detection
Flags images exceeding specified tolerance thresholds against target presets like 16:9.
Enlarged Modal Preview
Click thumbnails to review image compositions and crops in a lightbox modal.
CSV Export
Download full dimensions, ratios, and difference values for spreadsheet analysis.
Client-Side Privacy
Zero server uploads; all processing runs locally inside your browser.
No Installation or Signup
Immediate access on desktop and mobile browsers without accounts or fees.
Comprehensive Format Support
Compatible with JPEG, PNG, WebP, GIF, SVG, BMP, and AVIF.
Verifying whether batch assets meet standard dimensions (16:9, 4:3) before website deployment
Checking social media graphics against platform-required aspect ratios (Instagram, YouTube, X)
Isolating photos requiring manual cropping or reformatting from large asset folders
Confirming video thumbnail and storyboard asset proportions during media production
Exporting structured dimension lists as CSV for client deliverables and inventory management
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What image formats are supported?
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What format is the calculated aspect ratio displayed in?
Do I have to enter an ideal aspect ratio to use it?
Calculate aspect ratios and check for mismatches across all your images.