Image compressor
Reduce image dimensions and encode a smaller WebP or JPEG, with an exact before-and-after size comparison.
Open tool2541.CN / Tools
Practical tools for everyday work. Convert, create, calculate, and keep things moving.
34 Results
Reduce image dimensions and encode a smaller WebP or JPEG, with an exact before-and-after size comparison.
Open toolConvert browser-readable images to PNG, JPEG or WebP and choose a background for JPEG output.
Open toolResize an image to a chosen width and height, optionally keeping its original proportions.
Open toolCrop a precise rectangle using pixel coordinates measured from the top-left corner.
Open toolRotate an image by any angle while retaining the complete picture on an expanded canvas.
Open toolMirror an image horizontally, vertically or across both axes.
Open toolTurn an image into grayscale using weighted RGB luminance.
Open toolInvert RGB colors while preserving the alpha channel.
Open toolApply a warm sepia color transformation to a photo.
Open toolConvert pixels to pure black or white at a selected luminance threshold.
Open toolAdjust brightness and contrast with predictable RGB pixel operations.
Open toolIncrease color intensity or blend an image toward grayscale.
Open toolApply a Gaussian-style canvas blur to soften an image.
Open toolEnhance edge contrast with a configurable sharpening convolution.
Open toolCreate mosaic blocks by downsampling and enlarging with smoothing disabled.
Open toolAdd an even colored border around all four edges without covering the original image.
Open toolRound image corners and retain a transparent background in the exported PNG.
Open toolMake a centered circular avatar with transparent corners.
Open toolPlace a text watermark at the center or near a corner of your image.
Open toolOverlay a local logo image with adjustable size and opacity.
Open toolCombine multiple images into a labeled grid with consistent thumbnail sizes.
Open toolCut an image into rows and columns and download each tile or one ZIP archive.
Open toolInspect decoded dimensions, aspect ratio, file type and uncompressed RGBA memory size.
Open toolEncode a local image as a complete Base64 data URL for inline use.
Open toolReduce the opacity of an image while preserving existing transparency.
Open toolReplace pixels near a selected RGB color using a distance tolerance.
Open toolRemove pixels matching a background color, with an adjustable RGB tolerance.
Open toolFind the nontransparent pixel bounds and remove empty margins automatically.
Open toolFind common quantized colors from a sampled image and generate a downloadable palette.
Open toolMap image luminance between two chosen colors for a duotone effect.
Open toolVisualize a red, green, blue or alpha channel as a grayscale image.
Open toolCreate a Windows ICO favicon containing a PNG-encoded icon at your selected size.
Open toolRasterize safe, self-contained SVG source at a chosen size.
Open toolRecognize printed English, Simplified Chinese, Traditional Chinese or Japanese text using local OCR models.
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