Compress WebP Images Online Free
Reduce WebP images to a target size of your choosing. WebP is already an efficient format, so it is worth understanding what you gain — and what you may not — before compressing one.
You can also compress any image to a target size, or compress PNG images, or compress JPEG images.
Why compress WebP here
- Target a specific sizeSet the figure in KB that your form or mailbox requires.
- Produces a widely accepted fileThe JPEG output opens in software that will not accept WebP at all.
- Transparency handled predictablyWebP supports transparency; those areas are flattened to white rather than turning black.
- Free and browser-basedNothing to install, no account, no watermark.
How to Compress a WebP Image (Step-by-Step)
- 1
Upload your WebP image
Click the upload button or drag in your WebP file.
- 2
Set a target size
Enter the size in KB you need the finished file to fit within.
- 3
Click Compress
The image is reduced towards your target in a few seconds.
- 4
Download the result
Download immediately — no account, no email, no watermark.
When compressing a WebP is worth it
Given WebP's efficiency, the reasons are usually about compatibility or a hard limit rather than size alone:
- A form that rejects WebP entirely: The JPEG output is accepted where the original was not.
- A genuinely oversized WebP: Large or high-resolution WebP files can still exceed a strict limit.
- Sharing with older software: Recipients whose tools cannot open WebP at all.
- A strict per-file cap: Where the limit is tight enough that even an efficient format exceeds it.
Why WebP files are already small
WebP was designed by Google to reduce the weight of images on the web, and it uses more modern compression techniques than JPEG — a format dating from the early 1990s. For the same visual quality it typically produces files 25 to 35 per cent smaller.
That efficiency is exactly why so many sites serve WebP, and why images saved from the web increasingly arrive in that format. It is also why compressing one has less headroom than compressing an equivalent JPEG: much of the easy saving has already been taken.
Check before you compress
Look at the file size first and compare it against the limit you actually need to meet. WebP images are often comfortably under typical upload caps already, in which case compressing gains you nothing and costs a little quality.
If your problem is that something will not open or accept the file rather than that it is too large, converting is still the right move — but the point is compatibility rather than size, and choosing a generous target keeps the quality high while still solving the problem.
Privacy and Security
Every image you upload is transmitted over an encrypted HTTPS connection. Once compression finishes and you have downloaded the result, both the original and the compressed copy are permanently deleted from our servers. We never store, view or share your files.
Frequently Asked Questions
Will the compressed file still be a WebP?
No, it is returned as a JPEG. That makes it openable in software that does not support WebP, but it also means the output may not be smaller, since JPEG is the less efficient format.
Why did my WebP get bigger?
WebP compresses more efficiently than JPEG, so reproducing the same visual quality as a JPEG can take more space. If your file is already within your limit, there is no need to compress it.
What happens to transparency?
Transparent areas are filled with white, because JPEG has no transparency channel.
Should I compress my WebP at all?
Only if it genuinely exceeds a size limit, or if something you are uploading to will not accept WebP. Otherwise the original is usually the better file.
Is it free?
Yes, with no account and no watermark.