Toolnoza

Image Tools

Resize, compress and convert images in your browser. Review format, transparency and output dimensions before downloading.

PPI / Pixel Density CalculatorCalculate pixels per inch, pixel pitch and screen dimensions from resolution and diagonal.Image Color PickerPick a pixel from an image and copy its HEX, RGB and HSL color locally.Image DPI ConverterSet print resolution in a PNG download while preserving pixel dimensions.Pixels to CM and Inches CalculatorConvert pixels to print dimensions or physical dimensions to pixels using DPI.Passport Photo MakerCrop a photo to 35 × 45 mm or 2 × 2 inches and export at 300 DPI.Image Metadata RemoverRe-encode an image as PNG to remove original EXIF, GPS, IPTC and XMP metadata locally.Print Size CalculatorCompare print dimensions at 150, 240 and 300 DPI from image pixel dimensions.Combine Images OnlineCombine multiple photos into one image horizontally, vertically or in a grid. Adjust spacing and background, then download PNG or JPEG.Compress Image to Exact KB — Target SizeCompress a JPG, PNG or WebP below your chosen KB or MB limit by adjusting quality and, when needed, dimensions.JPG to WebP ConverterConvert a JPEG photo to WebP with adjustable quality.PNG to WebP ConverterConvert PNG images to WebP while retaining transparency.Favicon PNG GeneratorCreate a square 16, 32, 48 or 64 pixel PNG icon from an image.Pixelate Image OnlineApply a block pixel effect to an entire image.Image Brightness EditorLighten or darken a photo with a brightness slider.Image Contrast EditorIncrease or reduce image contrast locally.Invert Image ColorsCreate a negative by inverting the RGB channels.Sepia Photo FilterApply a warm sepia filter to a photo.Image CompressorReduce JPEG, PNG and WebP file size without sending your image to a server.Image ResizerResize an image to exact pixel dimensions while keeping the aspect ratio.JPG to PNGConvert a JPG or JPEG image to a PNG file in your browser.PNG to JPGConvert PNG images to smaller JPG files with a white background.WebP to JPGConvert a WebP image to a downloadable JPG with a white background.Image RotatorRotate an image 90°, 180° or 270° and download the result.Image CropperCrop an image to a centered square, landscape or portrait shape.Flip Image OnlineMirror a JPG, PNG or WebP horizontally or vertically and download it.Grayscale Image ConverterConvert a color image to black and white shades and download the result.Add Text Watermark to ImagePlace a text watermark near the bottom right of a photo and download a new copy.WebP to PNG ConverterConvert a WebP image to PNG in the browser, retaining transparency.

Practical guides: Image Tools

Image Aspect Ratio and Matching DimensionsReduce image width and height to a ratio, calculate matching dimensions and choose between cropping and resizing.Flip an Image Horizontally Without Rotating ItChoose a horizontal or vertical mirror, preserve the framing and check text before exporting your image.JPG to PNG: Quality, Size and TransparencyConvert an image format while understanding file size, existing JPEG artifacts and transparency limitations.Invert Image Colors vs Grayscale: What Changes?Invert Image Colors vs Grayscale: What Changes? — Practical steps, examples, common mistakes and FAQs on Toolnoza.How to reduce an image to under 200 KBChoose a suitable format, try a target file size and reduce pixel dimensions when quality alone is not enough.How to resize a photo without stretching itKeep the original aspect ratio when resizing, and distinguish a proportional resize from a crop.How to compress an image to under 4 MBPrepare a smaller JPG or WebP for an upload form using a custom file-size limit.How to split an image into an Instagram carouselCreate connected slides from one image, adjust the crop and download the tiles in order.Merge Images Online: Combine Photos Side by Side or in a GridLearn how to merge images into one JPG or PNG. Choose horizontal, vertical or grid layout, set spacing and download your combined photo.