Image workflow
Compress JPG, PNG, and WebP images in your browser, resize oversized photos, compare before/after size, and download optimized files for pages, posts, product images, and reports.
Compression report
Privacy and local cleanup
Images are decoded and compressed in this browser tab. They are not uploaded to Wanglitou servers, so there is no server-side image copy to delete.
Download what you need, then use Delete local result or Clear local files and results to remove selected files, previews, generated object URLs, and the result list from this page.
How to use this image compressor
- Upload one or more images, then choose a maximum width and quality level.
- Use JPEG for photos, WebP for modern web delivery, and PNG when transparency matters.
- Review the size report before downloading so you can tell whether compression helped enough.
- If a PNG gets larger after conversion, try WebP or reduce the image width first.
Why this version is useful
Many image compressors hide what changed. This page gives a simple before/after size report so SEO editors and site owners can decide whether an image is ready for upload, needs resizing, or should be converted to another format.
The trust model is intentionally simple: no account, no server upload for image compression, visible file list, visible output size, and clear local delete controls.
Privacy and cleanup note
This tool runs in your browser with local JavaScript. Your files or pasted lines do not need to leave your device for the main operation.
Use the visible Reset, Clear, Remove, or Delete local result controls when you finish. Large files can still be limited by device memory, browser canvas limits, or mobile performance, so test sensitive work with non-confidential samples first.
Last reviewed: April 27, 2026.
Next tools in the same workflow
These links stay within the same practical task chain, instead of sending visitors to unrelated calculators.
FAQ
Does this upload my images?
No. This image compressor uses browser canvas for the compression preview and export. The images stay in your browser tab rather than being stored on a Wanglitou server.
Do I need a server delete button?
For this browser-local image tool, there is no server-side image copy to delete. The delete controls clear the selected files, generated object URLs, preview, and result list from the current page.
Why is PNG sometimes larger?
PNG is lossless and not always smaller after canvas export. Try JPEG or WebP for photos.
Can I batch download a ZIP?
This pass focuses on reliable individual downloads. ZIP export is a good next enhancement.