resize · crop · reformat · pixel grids

Any image in.
Any image out.

Drop a URL or upload a file, crop it however you like, pick a size and a format, and ship it. Need a 32×32 sprite or a 2048-wide WebP? Same tool.

Start converting Read the docs

All-in-one image tool

Resize, crop, and convert any image

Pick a tool on the left, or use them all in one go. Same engine, same file. No upload required twice.

Tools

Switch tools any time. Your image stays loaded.

Converter

/convert-image

Source

Choose your image

Paste a URL or drop a file from your computer. PNG, JPG, WebP, GIF, and BMP all work.

Image URL

Upload an image

Drop, click, or paste image PNG · JPG · WebP · GIF · BMP · Ctrl/Cmd+V works anywhere

Pixelate Primary

Pixel-art settings

Pick a block size and a smoothing mode. Output keeps the source dimensions — no shrinking.

Block size

px / block

Quick presets

Pixel mode

Simple Crisp blocks. Nearest neighbour. Best for sprites. OG Averaged blocks. Softer, photo-style mosaic.

Invert Primary

Invert colors

Flips every RGB channel into its negative. Alpha channel passes through unchanged.

No options needed — just pick a format below and hit convert.

Mirror Primary

Mirror / flip image

Flip horizontally, vertically, or both at once.

Horizontal Left ↔ right. Vertical Top ↔ bottom. Both Flips on both axes — like a 180° rotate.

Size PrimaryOptional

Set your dimensions

Type a custom size, or pick a sprite preset. Lock the ratio to scale proportionally.

Width × Height

Quick presets

Format PrimaryOptional

Pick an output format

Each format is best for a different job. Click a card to choose.

Behaviour PrimaryOptional

How should we resize?

Tell PIXL what to do when the input shape doesn't match your output ratio.

Crop Fills exactly. Trims any extra edges. Stretch Fills exactly. May distort the image. Fit Keeps aspect. Adds transparent padding.

Pixel art & advanced›

Pixel art mode (nearest neighbour)

Best for sprites and low-res art. Keeps crisp edges instead of smoothing them.

API

One endpoint, backward compatible. Omit everything and you still get a 32×32 JSON pixel grid.

GET / POST /convert-image

url=<image url>          required when no file uploaded
file=<multipart upload>   POST alternative to url
width=1..4096            default 32
height=1..4096           default 32
format=png|jpeg|webp|bmp|gif|json   default json
mode=crop|stretch|fit    default crop
simple=true|false        nearest-neighbour pixel mode
crop_x,crop_y,crop_w,crop_h     pre-crop in source pixels

200 image/<format> · or application/json

{
  "pixels": [{ "R":0, "G":0, "B":0 }, ...],
  "final_size": [w, h],
  "original_size": [w, h],
  "resize_method": "crop",
  "processing_time": 0.04
}

GET / POST /api/image/pixelate

url=<image url>          required when no file uploaded
file=<multipart upload>   POST alternative to url
block=2..128             block size in source pixels, default 10
mode=simple|og          simple = nearest neighbour (crisp), og = averaged (smooth)
format=png|jpeg|webp|bmp|gif   default png

200 image/<format> \u00b7 output keeps source dimensions

GET / POST /api/image/invert

url=<image url>          required when no file uploaded
file=<multipart upload>   POST alternative to url
format=png|jpeg|webp|bmp|gif   default png \u00b7 alpha preserved

GET / POST /api/image/mirror

url=<image url>          required when no file uploaded
file=<multipart upload>   POST alternative to url
axis=h|v|both           default h \u00b7 horizontal / vertical / both
format=png|jpeg|webp|bmp|gif   default png

GET / POST /api/image/rotate

url=<image url>          required when no file uploaded
file=<multipart upload>   POST alternative to url
angle=-360..360         degrees, positive = clockwise, default 0
expand=true|false        expand canvas to fit rotated image, default true
format=png|jpeg|webp|bmp|gif   default png

GET / POST /api/image/format

url=<image url>          required when no file uploaded
file=<multipart upload>   POST alternative to url
format=png|jpeg|webp|bmp|gif   target format, default png
quality=1..100          jpeg / webp quality, default 92

Any image in. Any image out.

Resize, crop, and convert any image

Converter

API

Any image in.
Any image out.