Images
WebP test files, any size.
Set a size and generate a structurally valid WebP immediately. Nothing is uploaded and nothing is stored.
WebP, built to spec.
Each file is a WebP image encoded by your browser. The size you ask for is reached with a custom RIFF chunk, with the container size field corrected afterwards, so the result opens in modern browsers, Photoshop 23+ and libwebp tools. Most people generate these for testing next-gen image delivery and format negotiation.
Common sizes
Pick a size to jump straight to it, or set your own on the caliper above.
5 KB WebP
5,120 bytes
10 KB WebP
10,240 bytes
50 KB WebP
51,200 bytes
100 KB WebP
102,400 bytes
500 KB WebP
512,000 bytes
1 MB WebP
1,048,576 bytes
2 MB WebP
2,097,152 bytes
3 MB WebP
3,145,728 bytes
5 MB WebP
5,242,880 bytes
10 MB WebP
10,485,760 bytes
15 MB WebP
15,728,640 bytes
20 MB WebP
20,971,520 bytes
25 MB WebP
26,214,400 bytes
50 MB WebP
52,428,800 bytes
100 MB WebP
104,857,600 bytes
200 MB WebP
209,715,200 bytes
500 MB WebP
524,288,000 bytes
1 GB WebP
1,073,741,824 bytes
2 GB WebP
2,147,483,648 bytes
Questions.
How small can a WebP file be?
About 1,309 bytes. Below that the format cannot carry its mandatory structure, let alone padding.
Will the file open normally?
Yes — it opens in modern browsers, Photoshop 23+ and libwebp tools, because the padding lives in a custom RIFF chunk, with the container size field corrected afterwards.
Can I ask for an unusual size?
Any byte count above the minimum works, including values like 3,145,728 or 27.5 MB. Drag the caliper or type the number.
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