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Free Image Tools
Choose a tool to check color contrast, calculate an aspect ratio or monitor pixel density, read text from an image, or suggest image labels. OCR and image classification are also listed under AI tools; check their accuracy and download notes before using the results.
Browse and filter image toolsAll image tools
Choose a tool for your task. Open its matching guide when you need the inputs or results explained.
Color Contrast CheckerCheck WCAG 2.2 contrast and find a nearby AA-passing text color.Aspect Ratio CalculatorSimplify aspect ratios and scale width or height while keeping proportions.Monitor PPI CalculatorCalculate pixels per inch from screen resolution and diagonal size.Image to Text OCR ToolCopy text from screenshots, labels, receipts, and clear document images without uploading the image.Image ClassifierClassify an uploaded image in your browser with model confidence notes.
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What this category helps with
- Design and display checks for color contrast, aspect ratios, and monitor pixel density.
- Accessibility-aware outputs that explain pass/fail thresholds instead of hiding the assumptions.
- OCR for reading image text and AI image labels that need checking against the original image.
Guides for this category
Each guide uses its matching tool, with example numbers and plain limits.
- How to use the Color Contrast CheckerCheck two hex colors, read WCAG 2.2 AA and AAA results, and use a nearby AA text-color suggestion to repair a normal-text near miss.
- Aspect Ratio Calculator GuideUse the Aspect Ratio Calculator guide to simplify width and height, scale one dimension, and avoid stretched images, videos, and previews.
- Monitor PPI Calculator GuideUse the Monitor PPI Calculator guide to estimate screen pixel density, pixel diagonal, and aspect ratio from resolution and diagonal inches.
- How to use the Image to Text OCR ToolLearn how to copy text from screenshots and image files, improve image quality for OCR, and catch common copy mistakes. Includes input tips, output checks,...
- How to use the Image ClassifierLearn how to use the browser image classifier with clear, low-stakes photos, read the top 5 labels, and understand why confidence scores are guesses instead...