smallPict converts each upload to WebP or AVIF and picks the quality per image. On Free and Starter, images are processed and not kept; on Pro and Business, optional Cloud Offload keeps your originals in encrypted cloud storage and serves the optimized files from the CDN.
Same engine behind all three. The plugin is the shortest path if your site runs on WordPress.
Converts the media library and every new upload.
1 Plugins → Add New: search "smallPict", install and activate2 Settings → smallPict: paste your API key sp_wp_xxxxxxxx3 New uploads are optimized automatically4 Existing images: run the Bulk Optimizer in the plugin
One POST with the image, get the smaller file back.
# SIG = hex(HMAC-SHA256(secret, "POST\n/v1/optimize\n$TS\n$BODY_SHA256"))curl -X POST https://api.smallpict.app/v1/optimize \-H "X-API-Key: $SMALLPICT_API_KEY" \-H "X-Timestamp: $TS" -H "X-Signature: $SIG" \-H "Content-Type: application/json" \-d '{"filename":"header.jpg","mime_type":"image/jpeg","filesize":184320,"options":{"format":"webp"}}'
Node, PHP, Python, Go, Ruby, Rust, Java.
// npm install @smallpict/sdk (signs every request for you)import { SmallPict } from "@smallpict/sdk";import fs from "node:fs";const sp = new SmallPict({apiKey: process.env.SMALLPICT_API_KEY, secretKey: process.env.SMALLPICT_SECRET_KEY,});const out = await sp.optimize(fs.readFileSync("header.jpg"), { format: "webp" });console.log(out.url, out.savingsPercentage);
On the Velocity and Momentum API plans, connect your own storage and CDN together: Amazon S3, Cloudflare R2, Google Cloud Storage or any S3-compatible bucket, served through Cloudflare or Amazon CloudFront. Or let us store and deliver the files for you.
The CDN reads the browser's Accept header and sends the smallest format it can display.
AVIF
about half
the size of the JPEG. Chrome, Edge, Firefox, Safari 16.4+.
WebP
25–35% smaller
than the JPEG. All current browsers.
JPEG / PNG
kept
as the fallback for everything else.
At the default setting, almost never. The conversion is lossy, so the file is smaller because detail the eye does not pick up is removed. You can compare any image side by side in Assets & Preview.
On Pro and Business, the plugin writes AVIF and WebP next to the original and serves them with a <picture> tag: AVIF to browsers that accept it, WebP to the rest, the original to anything older. On Free and Starter, each image is converted to one format (WebP, or AVIF on Starter), which all current major browsers can display.
It depends on your plan. On Free and Starter, smallPict keeps no copy: each upload sits in temporary encrypted storage only while it is processed and is deleted within 24 hours, and the converted file replaces the original on your site, so keep your own backup if you need the originals. On Pro and Business, turn on Cloud Offload to keep originals in encrypted cloud storage and serve images from the smallPict CDN. Leave it off and everything stays on your WordPress server. On the Velocity and Momentum API plans, smallPict keeps your originals in secure, encrypted cloud storage for as long as your account is active. If you connect your own storage, the files live in your own account and you are responsible for them.
No. Install the plugin from WordPress.org, paste your key, and new uploads convert automatically. Run a bulk conversion for the existing library.
Node, PHP, Python, Go, Ruby, Rust and Java, plus the REST API for anything else.
The size of the files you upload for conversion. Serving the converted files from the CDN is counted separately, as bandwidth.
20 MB a month free. About two minutes to set up on WordPress.
