Image Tools

The Images category on ToolNestr provides a complete suite of image editing, optimization, and conversion tools that work entirely in your browser. Whether you are a web developer optimizing images for faster page loads, a photographer preparing shots for client delivery, a social media manager resizing graphics for different platforms, or someone who just needs to quickly edit a screenshot, these tools handle the job without requiring expensive software. The image compressor reduces file size while preserving visual quality, with support for JPEG, PNG, WebP, and AVIF formats. The image resizer lets you scale by percentage or exact pixel dimensions with aspect ratio locking. The crop tool provides freeform and fixed-ratio cropping with a visual selector. The format converters handle all major output formats: PNG, JPG, WebP, and AVIF are

all supported, covering both legacy compatibility and modern web optimization needs. The image to Base64 converter encodes any image as a data URI string for embedding directly in HTML or CSS files. The image rotator supports 90, 180, 270 degrees and custom angles. The mirror/flip tool flips images horizontally or vertically with one click. The aspect ratio calculator helps you resize content while maintaining proportions. The PPI/DPI calculator determines screen pixel density from resolution and display size for device comparison or print planning. The color contrast checker validates foreground and background color pairs against WCAG 2.1 AA and AAA accessibility ratios, which is essential for accessible web design. All image processing happens locally in your browser using client-side JavaScript. Your original images are never uploaded to any server, which means

you can work with sensitive, personal, or confidential images without security concerns. The tools support large files and produce high-quality output suitable for both web and print use. There are no usage limits, no watermarks added by the tool, and no account required.