Can I meet both pixel dimensions and a KB limit?

Set both requirements and check them separately against the actual output. Fixed dimensions will not shrink for compression. Incompatible requirements are marked as not met; an arbitrary limit cannot be guaranteed for every image.

Which formats are supported, and does PNG keep transparency?

Static JPG/JPEG and PNG are supported; animated PNG is not. Keeping PNG preserves transparency and never silently converts to JPG. Transparent areas are filled white only when you explicitly choose JPG, and the preview shows the result.

How do KB, MB and pixels differ?

Pixels describe image width and height; KB/MB describe file size. Here 1 KB is 1,000 bytes and 1 MB is 1,000,000 bytes. An output meets the limit when its actual bytes are at or below it; an exact match is unnecessary.

Are images uploaded, charged or restricted to signed-in users?

Original images are not uploaded. Format checks, compression and previews run locally in this browser for free, without sign-in. Add up to 10 files.

Can I download an over-limit result, and what goes into ZIP?

All successfully processed valid images can be downloaded individually or together as ZIP, including over-limit results. Failed or unfinished files are excluded; valid results completed before cancellation remain available. Actual bytes still determine whether the size limit is met.

Compress Images to a Target KB Size & Resize Pixels

All tools

Files0

Purpose-built previewCompressed image and original

originalCompressed

ResultsIMAGE

Finish the settings, then start processing.

OutputIMAGE

ProcessingLocalFiles stay on this device

Accepted inputJPG、JPEG、PNGBatch supported · 10

WorkflowBatch supportedLive workspace preview

OutputIMAGE压缩后的图片

Good for these tasks

Image Compression & Resize is more than one action.

Compress static JPG and PNG images and resize their pixel dimensions locally in your browser. Set a 20 KB, 50 KB, 100 KB or 200 KB limit, then check the actual bytes and pixels. Results that cannot meet both requirements are clearly marked.

Application photos

Check both the pixel dimensions and the file size requested by the receiving system. Fixed dimensions will not shrink to meet a size limit.

Email and form attachments

Apply one upper limit to several static photos. Review actual sizes and download all successfully processed valid images.

Transparent artwork

Keep PNG transparency, or explicitly choose JPG and review its white background. Check pixels and KB separately.

Steps

Compress Images to a Target KB Size & Resize Pixels

The workspace comes first; use this section when you need the full process.

Image Compression & Resize：Set pixel dimensions and a KB limit for a static JPG or PNG, then review the actual image, bytes and target status before downloading

01
Add JPG or PNG images
Add up to 10 static images. Check the source orientation and content first.
02
Set the size and pixel requirements
Enter a file size limit and choose its unit, then optionally set a width, height or fixed box. PNG will not silently change to JPG.
03
Process locally in your browser
A limited set of candidates is generated from the source and checked by actual bytes. Pixel reduction is tried only when enabled and dimensions are not fixed.
04
Review and download
Check the image, actual pixels, bytes and target status. Download all successfully processed valid images individually or together as ZIP, including over-limit results. Failed or unfinished files are excluded.

Capabilities and limits

What should you know first?

Check processing location, input limits and output before you begin.

01Files and previews stay in this browser. Processing is free with no sign-in. Static JPG/JPEG and PNG are supported; animation is not.
02Pixel dimensions and file size are separate requirements. 1 KB = 1,000 B and 1 MB = 1,000,000 B. A result can be smaller than the limit.
03PNG keeps transparency and does not use a JPEG quality setting. Transparent areas become white only when you explicitly choose JPG.
04Fixed pixels, clarity and a very small byte limit may be incompatible. Selection covers the verified candidates from this run, with no guarantee that every image can meet the target or reach a global optimum.

Image Compression & Resize is more than one action.

What should you know first?

About Image Compression & Resize