Description

One2Image – Image Optimizer compresses, resizes and converts WordPress media in your browser. Unlike cloud image APIs, processing runs locally in the browser Canvas — images are never sent to One2Image for optimization.

What makes it different

Browser-based compression, resize and format conversion (JPEG / PNG / WebP)
No external image-processing service, API key, account, or quota
Original Media Library files stay intact — saves create a new attachment
Works for roles that can upload media; site-wide settings require an administrator

Local processing

Image processing happens locally in your browser.
Your images are never sent to One2Image.
No One2Image API key, account, subscription, or quota is required.
The only network transfer in the main workflow is between your browser and your own WordPress site, when you choose to save.

Features

Dashboard with library stats (no invented “potential savings”)
Media Optimizer table with filters and search
Quick Optimize / batch (up to 20 images, sequential)
Smart format selection (keeps the lightest real result; skips if nothing is smaller)
Manual optimize: compress, resize, convert (JPEG/PNG/WebP), rotate
Save as a new Media Library attachment (original always stays intact)
Settings for quality, max width, preferred format, batch size (administrators only)

Privacy

Canvas re-encoding typically strips embedded EXIF / IPTC / XMP metadata. WordPress attachment fields (title, alt text, caption, description) are copied to the new image when you save.

Development

Human-readable JavaScript / TypeScript sources ship with the plugin in src/.

Compiled assets under assets/js/ are produced with esbuild (see package.json).

Rebuild:

npm install
npm run build:js

media-bridge.js is maintained as readable JavaScript and is not built from TypeScript.

Translations for WordPress.org are managed on translate.wordpress.org (Text Domain: one2image).

Privacy

This plugin does not phone home. It does not embed advertising trackers, analytics beacons, or telemetry to One2Image.

Optional links to one2image.com / one2pdf.com are voluntary navigation only and use non-personal UTM parameters (utm_source=wordpress_plugin).

When you click Save as new image (or batch save), the optimized file is sent from your browser to your WordPress site using the WordPress REST API on your domain.

Installation

Upload the one2image folder to /wp-content/plugins/, or install the ZIP via Plugins Add Plugin Upload Plugin.
Activate One2Image – Image Optimizer.
Open One2Image Dashboard in the admin sidebar.
Click Optimize Media Library, select images, then Quick Optimize.

FAQ

Are my images uploaded to One2Image?: No. Processing runs in your browser. Images are never sent to One2Image. When you save, the optimized file is uploaded only to your own WordPress site.
Do I need an API key or account?: No. The plugin is free and works without an account, API key, or subscription.
Does it replace my original image?: No. It only creates a new Media Library attachment. The original remains unchanged.
Why was an image skipped?: Quick Optimize only saves a new file when the result is actually smaller than the original.
Does it optimize uploads automatically?: Not yet. The setting is reserved for a future version.
Who can change plugin settings?: Only users with the manage_options capability (typically Administrators). Editors and Authors can still optimize media they can edit.

Reviews

There are no reviews for this plugin.

Contributors & Developers

“One2Image – Image Optimizer” is open source software. The following people have contributed to this plugin.

kameltalbi

Translate “One2Image – Image Optimizer” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.

Changelog

1.3.0

WordPress.org pre-review: Contributors set to submitting account; settings require manage_options
Include human-readable JS/TS sources and package.json in the distribution ZIP
Remove bundled fr_FR translation files (use translate.wordpress.org)
Document browser-based local processing and the Development build steps

1.2.6

Plugin Check cleanup for WordPress.org (translator comments, WP upload/delete APIs, automatic textdomain loading, safer Media Library DOM)
Plugin URI removed so it is not identical to Author URI

1.2.1

Suggest optimization after image upload (Media Library, Featured Image, Gutenberg via REST)
Batch upload suggestion (single notice, Optimize all / Review / Not now)
Setting: Suggest optimization after image upload (on by default)
Automatic optimize on upload remains Coming soon

1.1.1

Batch completion UX: success state, clear selection, refresh list, view optimized / optimize more
Distinguish optimized / skipped / failed in batch summary

1.1.0

Top-level One2Image admin menu (Dashboard, Media Optimizer, Settings)
Library table with filters, search, pagination
Quick Optimize batch (max 20, sequential, local)
Smart result selection (skip if not smaller)
Real optimization stats via attachment meta
Settings page

1.0.0

Initial release
Compress, resize, convert (JPEG/PNG/WebP), rotate
Local browser processing
Save as new Media Library image

Description

Development

Privacy

Installation

FAQ

Are my images uploaded to One2Image?

Do I need an API key or account?

Does it replace my original image?

Why was an image skipped?

Does it optimize uploads automatically?

Who can change plugin settings?