Save optimization decisions
Keep format, quality, and sizing choices together in one browser-native workflow instead of repeating the same export trial-and-error.
Image Truth
Free Image Optimizer Online
Optimize and compress images online using this browser-based image optimizer that keeps your files local and secure.
Online tool, local processing — optimize images without uploading files.
Runs locally • Saves automatically • Share via link
Browser-native
Auto-save
Shareable workspace
No login
Start here
Open a browser-native workspace with a local file or a sample image.
The workflow begins with the upload, then keeps diagnostics, optimization decisions, and export choices together so you can revisit the same path before finishing.
Live image optimizer
See the tradeoff before you export.
WebP1600pxBalanced quality
BeforeAfter72% smallerPNG → better as WebP
Quality
Live export preview updates as you tune the file.
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Core benefits
Closer to a studio than a utility.
Revisit the tradeoff
Return to the same comparison flow when you want to review whether size, clarity, or transparency should win.
Share the decision
Use the same workspace flow to align on export choices with teammates before the final image leaves your browser.
Why it helps
Why use this online image optimizer
Compress images in the browser without sending private files to a server.
Inspect file size, dimensions, and export format before downloading the result.
Use a focused optimizer when you need a fast decision, not a heavy asset pipeline.
How to use it
How online image optimization works
1 Open Image Truth and add an image from your device.
2 Choose the format and quality settings that match your target.
3 Download the optimized image when the size and preview look right.
Quick tips
Tips for online image optimization
Use JPEG or WebP for photos and reserve PNG for transparency-heavy assets.
Check file size after resizing; dimension changes often save more than quality changes.
Keep originals separately when you need a full-resolution source for future edits.
FAQ
Online image optimizer questions
Is this image optimizer online or local?
It opens online in your browser, but the image processing runs locally so files do not need to be uploaded.
Can I compress images without installing software?
Yes. You can optimize images directly in the browser without a desktop editor or command-line setup.
Which image format should I export for web delivery?
WebP is often a good first choice for web delivery, while JPEG works well for photos and PNG is useful when transparency matters.
Can this online optimizer show quality changes?
Yes. The workflow is built around previewing quality and file-size tradeoffs before export.
Open the main Image Truth page
This page focuses on one search intent. The main tool page includes the broader product overview, related workflows, and full use cases.