ToolBelt

Image & Media

Resize, convert and inspect images.

50 tools
Animated GIF from Frames
Combine a zip of image frames into a looping animated GIF with a chosen frame delay.
ASCII Art from Image
Turn an image into monospaced ASCII art.
AVIF Inspector
List ISOBMFF boxes and dimensions inside an AVIF / HEIC file.
Base64 / Data URI to Image
Decode a base64 string or data URI into a downloadable image.
Blurhash + ThumbHash Generator
Generate Blurhash and ThumbHash placeholder codes for any image.
Brightness / Contrast / Saturation
Adjust an image's brightness, contrast and saturation (100% = unchanged).
Bulk Image Resizer
Resize, convert and strip metadata from many images at once — download all as one ZIP.
Color Palette Extractor
Extract a dominant-colour palette from any image with k-means.
EXIF / Metadata Stripper
Remove EXIF, IPTC, XMP and ICC metadata from an image.
EXIF Viewer
View EXIF tags embedded in JPEG and other images.
Favicon Generator
Generate a multi-size favicon.ico plus 16-512 px PNGs from one image.
Grayscale / Sepia Image Filter
Apply grayscale or sepia filters to an uploaded image.
Image Blur / Sharpen
Gaussian blur or unsharp-mask sharpen.
Image Compressor
Shrink an image's file size with a quality slider.
Image Crop
Crop an image to a specified rectangle.
Image Diff
Pixel-wise difference between two same-sized images.
Image Dither
Apply Bayer, Floyd-Steinberg or Atkinson dithering.
Image DPI
Read and set the DPI of an image without resampling.
Image Edge Detect (Sobel)
Apply a Sobel edge-detection filter to highlight outlines.
Image Emboss
Apply a Laplacian-of-Gaussian-style emboss filter.
Image Flip / Rotate
Flip horizontally / vertically and rotate by 90, 180 or 270 degrees.
Image Format Converter
Re-encode an image between PNG, JPEG, WebP, GIF and BMP.
Image Histogram
Inspect RGB channel distribution for an uploaded image.
Image Inspector
Probe an image to see its format, dimensions and metadata.
Image Invert (Negate)
Photographic negative — invert RGB channels.
Image LSB Steganography — Decode
Extract a UTF-8 message hidden in the LSBs of an image.
Image LSB Steganography — Encode
Hide a UTF-8 message in the low bits of a PNG cover image.
Image Padding / Border
Add a coloured padding / border around an image.
Image Posterize
Reduce each channel to N levels for a poster-style look.
Image Quantize
Reduce an image to a fixed number of colors (octree).
Image Resizer
Resize any image with contain / cover / stretch fit modes.
Image Side-by-Side Combiner
Combine two images horizontally or vertically into one.
Image Threshold / Binarize
Convert an image to pure black & white at a chosen threshold.
Image to Base64 / Data URI
Convert any image to a base64 string or a data URI.
Image Vignette
Darken the corners with an elliptical vignette.
Image Watermark Tool
Add text watermarks over images.
Image Watermarker
Stamp text or an overlay image onto any photo — 9-position grid, opacity, padding.
JPEG XL Inspector
Detect JPEG XL container kind (raw codestream vs BMFF) from the file signature.
Meme Caption Generator
Overlay bold top and bottom captions on an image, meme-style.
Perceptual Image Hash
Compute aHash, dHash and pHash for an image.
Pixelate / Mosaic Image
Create a pixelated mosaic version of an uploaded image.
PNG Chunk Inspector
List every chunk in a PNG file with size, type and CRC.
Polaroid Frame
Apply ImageSharp's polaroid effect.
QR Code Generator
Generate a QR code PNG with custom colours and error correction.
Sprite Sheet Packer
Pack many icons into one PNG sprite with CSS + JSON metadata.
Sprite Sheet Slicer
Slice a sprite sheet into tiles and download a zip.
SVG Optimizer
Losslessly minify SVG markup — strip comments, defaults, unused IDs, empty groups.
SVG Path Parser
Break down an SVG path d= attribute into commands.
SVG to Favicon Generator
Convert SVG artwork into favicon assets.
TIFF Inspector
Read a TIFF file's endianness, IFD count, dimensions and bit depth.
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