Compress with a target size
Shrink files by up to 90% with a quality slider, or set an exact goal like "under 200 KB" and let Cleanor find the best quality. Every result shows what you saved.
Chrome extensions Image Optimizer
Compress and convert any image, right in your browser
To compress or convert an image in Chrome, install this extension, drop the file in, and pick a format or an exact target size. It opens iPhone HEIC photos, exports WebP, AVIF, JPEG, PNG and PDF, and strips EXIF and GPS metadata on every re-encode. Everything happens on your device and nothing is uploaded.
A fast, private image toolkit in your toolbar. Compress and convert images (HEIC, AVIF, WebP, PDF), resize and crop, take full-page screenshots, and save every image on a page. Everything runs on your device, nothing is uploaded.
- 100% on-device
- HEIC + AVIF + PDF
- Screenshots built in
- No account
One toolbar button, everything on your device
Everything you would juggle across websites, done locally in a couple of clicks.
Convert any format
Export to WebP, AVIF, JPEG, PNG, or PDF. Open iPhone HEIC and AVIF photos and save them as universal files. Doubles as an offline HEIC-to-JPG and WebP converter.
Resize and crop
Resize by max width, exact WxH, or percentage with one-tap presets (4K, 1920, 1280, 800). Crop to 1:1, 4:3, 3:2, 16:9, or 9:16 for avatars, thumbnails, and posts.
Batch to ZIP or PDF
Add many images by drag-and-drop, file picker, or paste, then download them all as a single ZIP, or combine them into one multi-page PDF.
Right-click any image
Right-click a picture on any page and pick WebP, AVIF, JPEG, PNG, or PDF. It downloads instantly with no extra window, or copies straight to your clipboard.
Save every image on a page
Right-click a page to "Download all images" as one tidy ZIP, or "Convert all images" to compress a whole page into a single archive, named correctly by type.
Built-in screenshots
Capture the visible area, a region you draw, or the full scrolling page (Cleanor stitches it for you). No screen recording, no debugger permissions.
100% on your device
Nothing is uploaded and no account is needed. EXIF, GPS, and camera metadata are stripped on every conversion. No ads, no tracking, and it works offline.
See it in action
Swipe, or scroll sideways. Every shot is the real interface, not a mock-up.
How to compress an image in Chrome without uploading it
No onboarding, no account. Install it and use it straight away.
- 1
Add to Chrome
Install Cleanor from the Chrome Web Store. No sign-up, no setup, and it asks for no site access at install.
- 2
Drop, paste, or right-click
Open the popup and drop an image, paste from the clipboard, or right-click any picture or page on the web.
- 3
Optimize and save
Pick a format, target size, or crop, then download the result, a ZIP, a PDF, or a screenshot. All on your device.
Exactly what it asks for, and what it does not
The permissions are on the store listing too. They are here because a list you have to go and find is not transparency.
It asks for
- activeTab
- Read the page you invoked it on, and only at that moment.
- scripting
- Find the images on that page, and take the screenshot.
- downloads
- Save the result to your downloads folder.
- contextMenus
- The right-click entries.
- storage
- Remember your quality and format settings. Nothing else.
- clipboardWrite
- Copy a converted image, when you ask it to.
- all sites (optional)
- Only to fetch images so a whole page can be converted in one go. Decline it and everything else still works.
It never asks for
- Your browsing history
- Your cookies
- Your tabs
- Your bookmarks
- A debugger on the page
Not "we promise not to use it". It is not in the manifest, so the browser would not give it to us if we changed our minds.
What it will not do
Every tool has an edge. Knowing where it is beats finding out halfway through a job.
Very large files hit the browser, not us
Everything runs in your tab, so a 100 MB image can exhaust the memory the browser gives a page. That is the price of not uploading it to anyone.
It does not optimize a website for you
This converts files you have. If you want images optimized automatically as a site serves them, that is what the WordPress plugin is for.
No cloud, so no cloud features
No CDN, no server-side resizing, no dashboard of what you optimized last month. There is no server to keep any of that on.
Private by design
Cleanor's image engine runs the same way everywhere: on your device. This Chrome extension is one of several free, open-source Cleanor add-ons, alongside the MCP server, the WordPress plugin, and the Figma plugin.
Frequently asked questions
Are my images uploaded anywhere?
No. Every image is processed on your own device inside your browser, using its encoder plus small bundled WebAssembly codecs for AVIF and HEIC. Nothing is ever sent to a server.
Can it convert iPhone HEIC photos?
Yes. Open HEIC or HEIF files and save them as JPG, PNG, or WebP that opens on any device. It works as a reliable, offline HEIC-to-JPG converter.
What formats can it export?
WebP, AVIF, JPEG, PNG, and PDF. You can also combine several images into a single multi-page PDF.
Does it work offline?
Yes. Once installed, compression, conversion, resizing, cropping, and screenshots all work without an internet connection.
Does it remove metadata?
Yes. EXIF, GPS, and camera metadata are stripped automatically whenever an image is re-encoded, which is better for your privacy.
Is Cleanor free?
Yes. There is no sign-in, no subscription, and no ads. The full extension source is on GitHub.
Free, and one click away
Free and open source. Add Cleanor Image Optimizer to Chrome and try it in seconds.