Processing boundary
Input is processed only in the active browser tab's memory and is not sent to a ByteQuant server.
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Converters
Image Compressor
Resizes PNG, JPG, or WebP in-browser and re-encodes it at the selected lossy quality. It reports actual before-and-after size because some settings can produce a larger file.
✓ Free✓ No account✓ In-browser
Persistent storage
Input and output are not stored. The optional usage counter keeps only tool identity and count, never content.
Verification
Output comes from disclosed rules or browser APIs and needs independent review before high-impact use.
A result in three steps
- 01
Choose the source image; consider the EXIF cleaner first for sensitive metadata.
- 02
Set WebP/JPG, longest edge, and quality, then run compression.
- 03
Review actual size and visual quality before downloading the suitable copy.
When is this tool useful?
- ✓ Image optimization for Core Web Vitals
- ✓ Reducing email attachment size
- ✓ Resizing before mobile upload
Important limitation
Automated output is a preliminary assessment. Do not use it alone for legal, financial, medical, or security-critical decisions.
LEARN THE WORKFLOW
Guides for this tool
Create PDF from Images: Size, Order, and Readability Guide
Turn scans, receipts, and presentation images into one PDF with the right size and order.
Read guide →WebP vs PNG vs JPG: Image Format and Compression Guide
Choose the right image format for transparency, quality, file size, and Core Web Vitals.
Read guide →ABOUT THIS TOOL
Frequently asked questions
Does this tool send input to a server?+
No. Processing runs in this browser tab. Data leaves the page only when you choose to copy or download the result.
Is the result definitive?+
The tool produces consistent output from disclosed rules and browser APIs, but context, data quality, and method limitations can affect it. Verify high-impact decisions.
Is input saved?+
No. Tool input is not persisted to localStorage or another durable store. Only with your consent may tool slug, count, and last-used time be kept on this device for personal shortcuts; that record can be deleted through privacy choices.