🖼️ IPX

[!NOTE] This is the active branch for IPX v2. Check out ipx/v1 for v1 docs.

High performance, secure and easy-to-use image optimizer powered by sharp and svgo.

Used by Nuxt Image and Netlify and open to everyone!

Using CLI

You can use ipx command to start server.

Using npx:

npx ipx serve --dir ./

Usin bun

bun x npx ipx serve --dir ./

The default serve directory is the current working directory.

Programatic API

You can use IPX as a middleware or directly use IPX interface.

import { createIPX, ipxFSStorage, ipxHttpStorage } from "ipx";

const ipx = createIPX({
  storage: ipxFSStorage({ dir: "./public" }),
  httpStorage: ipxHttpStorage({ domains: ["picsum.photos"] }),
});

Example: Using with unjs/h3:

import { listen } from "listhen";
import { createApp, toNodeListener } from "h3";
import {
  createIPX,
  ipxFSStorage,
  ipxHttpStorage,
  createIPXH3Handler,
} from "ipx";

const ipx = createIPX({
  storage: ipxFSStorage({ dir: "./public" }),
  httpStorage: ipxHttpStorage({ domains: ["picsum.photos"] }),
});

const app = createApp().use("/", createIPXH3Handler(ipx));

listen(toNodeListener(app));

Example: Using express:

import { listen } from "listhen";
import express from "express";
import {
  createIPX,
  ipxFSStorage,
  ipxHttpStorage,
  createIPXNodeServer,
} from "ipx";

const ipx = createIPX({
  storage: ipxFSStorage({ dir: "./public" }),
  httpStorage: ipxHttpStorage({ domains: ["picsum.photos"] }),
});

const app = express().use("/", createIPXNodeServer(ipx));

listen(app);

URL Examples

Get original image:

/_/static/buffalo.png

Change format to webp and keep other things same as source:

/f_webp/static/buffalo.png

Keep original format (png) and set width to 200:

/w_200/static/buffalo.png

Resize to 200x200px using embed method and change format to webp:

/embed,f_webp,s_200x200/static/buffalo.png

Config

You can universally customize IPX configuration using IPX_* environment variables.

• IPX_ALIAS

  • Default: {}

Filesystem Source Options

(enabled by default with CLI only)

IPX_FS_DIR

• Default: . (current working directory)

IPX_FS_MAX_AGE

• Default: 300

HTTP(s) Source Options

(enabled by default with CLI only)

IPX_HTTP_DOMAINS

• Default: []

IPX_HTTP_MAX_AGE

• Default: 300

IPX_HTTP_FETCH_OPTIONS

• Default: {}

IPX_HTTP_ALLOW_ALL_DOMAINS

• Default: false

Modifiers

| Property | Docs | Example | Comments | | -------------- | :-------------------------------------------------------------- | :--------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------- | | width / w | Docs | /width_200/buffalo.png | | height / h | Docs | /height_200/buffalo.png | | resize / s | Docs | /s_200x200/buffalo.png | | kernel | Docs | /s_200x200,kernel_nearest/buffalo.png | Supported kernel: nearest, cubic, mitchell, lanczos2 and lanczos3 (default). | | fit | Docs | /s_200x200,fit_outside/buffalo.png | Sets fit option for resize. | | position / pos | Docs | /s_200x200,pos_top/buffalo.png | Sets position option for resize. | | trim | Docs | /trim_100/buffalo.png | | extend | Docs | /extend_{top}_{right}_{bottom}_{left}/buffalo.png | Extend / pad / extrude one or more edges of the image with either the provided background colour or pixels derived from the image. | | background / b | _ | /r_45,b_00ff00/buffalo.png | | extract | Docs | /extract_{left}_{top}_{width}_{height}/buffalo.png | Extract/crop a region of the image. | | format / f | Docs | /format_webp/buffalo.png | Supported format: jpg, jpeg, png, webp, avif, gif, heif, tiff and auto (experimental only with middleware) | | quality / q | _ | /quality_50/buffalo.png | Accepted values: 0 to 100 | | rotate | Docs | /rotate_45/buffalo.png | | enlarge | _ | /enlarge,s_2000x2000/buffalo.png | Allow the image to be upscaled. By default the returned image will never be larger than the source in any dimension, while preserving the requested aspect ratio. | | flip | Docs | /flip/buffalo.png | | flop | Docs | /flop/buffalo.png | | sharpen | Docs | /sharpen_30/buffalo.png | | median | Docs | /median_10/buffalo.png | | blur | Docs | /blur_5/buffalo.png | | gamma | Docs | /gamma_3/buffalo.png | | negate | Docs | /negate/buffalo.png | | normalize | Docs | /normalize/buffalo.png | | threshold | Docs | /threshold_10/buffalo.png | | tint | Docs | /tint_1098123/buffalo.png | | grayscale | Docs | /grayscale/buffalo.png | | animated | - | /animated/buffalo.gif | Experimental |

License

MIT