Runs in your browser tab
Your pixels,
handled locally.
Compress to an exact file size, resize for every storefront and feed, crop with ratio locks, pull a palette out of a photo and check it for contrast. Eight focused tools — no account, no upload queue, no watermark.
The kit
Every tool reads your file into a canvas on this device and writes a new one. That is the whole pipeline.
- 01Image CompressorHit a file-size target
- 02Image ResizerPresets for shops and socials
- 03Image CropperRatio locks and arrow-key nudging
- 04Format ConverterPNG, JPG and WebP
- 05Aspect Ratio CalculatorSolve, simplify, match
- 06Colour Palette ExtractorMedian cut + k-means
- 07Colour Contrast CheckerWCAG 2.x AA and AAA
- 08Favicon & Base64 GeneratorIcons and data URIs
Why local processing matters for images
Product shots before launch, client work under NDA, photos of your kids: images are often the files you least want sitting on a stranger's server. PixelKit is a static site. Once the page has loaded, the tools do not need the network at all.
Your device does the work
Decoding, scaling and encoding use your browser's built-in image engine and the HTML canvas.
Nothing to upload
There is no upload endpoint. Your file is read from disk into memory and released when you close the tab.
Metadata left behind
Canvas exports contain pixels only, so EXIF data such as camera serials and GPS location is not copied.
No account, no tracking of files
We never see file names, contents or results. Optional ads and analytics load only if you allow them.
A typical listing photo, start to finish
- STEP 1
Crop
Square it up at 1:1 and nudge the box with arrow keys until the product sits dead centre.
Open tool - STEP 2
Resize
Pick a marketplace preset so zoom stays sharp without shipping a 24-megapixel original.
Open tool - STEP 3
Compress
Ask for “under 500 KB” and let the binary search find the highest quality that fits.
Open tool - STEP 4
Check
Pull the palette for your banner and confirm your price text passes WCAG contrast.
Open tool
Field notes
All guides- WebP vs JPEG vs PNG: which format for which imageHow the three main web image formats compress pixels, where each one wins, and a simple decision path for photos, graphics and transparency.
- Product photo sizes that look sharpWhy pixel dimensions, zoom, screen density and compression decide how crisp a product photo looks, and how to prepare one master image for every channel.
- Building a colour palette from a photoFrom pixels to a usable palette: what extraction algorithms actually do, how to pick roles for each colour, and how to keep text readable.