Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Image Optimizer Pro

Image Optimizer Pro by Evgeniy Fitsner

Resize, crop, and compress any image — PNG, JPEG, WebP, AVIF, HEIC. 100% private, 100% local, zero uploads.

0 (0 reviews)0 (0 reviews)
1 User1 User
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
About this extension
Resize images, compress photos, crop pictures & convert HEIC to JPEG — 100% local, zero uploads.

Image Optimizer is a free, private image editor for Chrome. Resize, compress, crop, and convert images without ever sending your files to a server. No accounts. No tracking. No uploads.

🔹 HEIC / HEIF Converter — import photos directly from iPhone, iPad, or Mac. Auto-converts to PNG, JPEG, or WebP — perfect for sharing on Windows or uploading to websites
🔹 Image Compressor — compress to WebP, JPEG, PNG, or AVIF with a quality slider (1–100). Real-time before/after preview shows exactly how your image will look
🔹 Split View Comparison — drag the slider to compare original vs optimized side by side. See compression effects instantly
🔹 Image Resizer — set exact width and height with aspect lock, or use presets (25%, 50%, 75%, 100%, 2×) based on your original dimensions
🔹 Image Cropper — interactive grid overlay with rule-of-thirds guides. Aspect presets: Free, 1:1, 4:3, 16:9, 9:16. Pixel‑precise controls
🔹 Undo / Redo — full 50-step history. Never lose your work
🔹 Background Fill — color picker with presets. Perfect for product photos and social media graphics
🔹 Copy to Clipboard — export directly without downloading

Perfect for:
• iPhone users converting HEIC photos to share on Windows, upload to websites, or send via email
• Web developers compressing and resizing images for better Core Web Vitals and site performance
• Social media managers preparing images for different platforms
• Anyone who needs quick image edits without Photoshop, without uploads, without accounts

Supported formats:
✅ Import: PNG, JPEG, WebP, AVIF, HEIC / HEIF
✅ Export: PNG, JPEG, WebP, AVIF

100% private. 100% free. Zero data leaves your device.
Rated 0 by 0 reviewers
Sign in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Optional permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support Email
  • Copy add-on ID
Version
1.0.19
Size
1.61 MB
Last updated
4 days ago (Jun 11, 2026)
Related Categories
  • Web Development
  • Appearance
  • Photos, Music & Videos
License
Custom License
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla’s homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.