Try a real creator scenario
Upload a 2.4 MB JPEG, set 500 KB, choose WebP, and download the closest result after up to 12 quality passes.
Local creator utility
Local Image Compressor
Compress JPEG or WebP toward a target file size with a bounded quality loop entirely in your browser.
Local processingData pending verification. Use as a rough preview only.Best-effort guidance
Local processingYour file is processed locally in your browser and never uploaded.
01 · Configure
Compression setup
Advanced dimensions
02 · Compare
Output preview
Your compressed preview appears here.
Live output
Result inspector
Original—
Output—
Quality pass—
Target statusWaiting
The quality loop starts at 0.92 and stops after at most 12 passes.
Avoid preventable rework
- Expecting transparency in JPEG
- Setting a target too small for detailed artwork
- Closing the tab before downloading
How it works
A private, repeatable browser workflow
01 · Add input
Enter dimensions, text, or choose a supported local image.
02 · Inspect
The browser calculates or renders the result without a remote request.
03 · Continue
Copy the result, download the image, or open the Safe Zone Checker.
| Check | What to review | Why it matters |
|---|---|---|
| Input | Non-empty, positive values or a supported image | Prevents invalid dimensions and browser decoding errors. |
| Output | Dimensions, ratio, quality, and visual crop | Confirms the transform matches the intended placement. |
| Final preview | Current publishing or ads surface | Platform behavior can change after this tool is reviewed. |
Clear answers
Questions creators ask
Practical notes for a faster, more confident pre-publish check.
Is my file uploaded?
No. The file is decoded and processed by browser APIs on this device only.
What happens when I compress an image?
The result is generated in temporary browser memory. Download it before leaving; the site does not save a copy.
Does it work on mobile?
Modern mobile browsers are supported, but very large images can exceed device memory. Use a desktop for unusually large creative.
Why can the result miss my target?
Complex images can remain larger even at the minimum quality. The loop stops after a fixed number of passes to protect browser performance.
Keep the workflow moving
Related tools & templates
Last reviewed
2026-07-16
Data pending verification. Use as a rough preview only.
Best-effort safe zone preview. Always verify in the platform preview before publishing or running ads.