Compress an image to 8 MB.
Drop your photos and download each one as a JPG under 8 MB. The quality is lowered first and the pixel dimensions only when that is not enough; the photo is never cropped. It runs in your browser; nothing is uploaded.
Under 8 MB per image, saved as JPG
Limits come from each platform's own help pages, summarised in the guides (checked 24 September 2026).
Who asks for 8 MB.
Lines from Herofab's platform guides that name 8 MB, as a limit, a recommendation or one end of a range. Each row links to the guide and its official source.
| Platform | Rule | What the guide says | Read |
|---|---|---|---|
| Facebook & Instagram Shop | File size | 8 MB maximum | 11 October 2026 |
| BigCommerce | File size | 8 MB maximum for each product and variant image | 12 October 2026 |
| eMAG | File size | Maximum 6 MB per file according to the image standards; the invalid images error page states a maximum of 8 MB | 12 October 2026 |
8 MB in numbers.
Counted as the compressor counts: 1 KB is 1,000 bytes and 1 MB is 1,000,000 bytes. Bits per pixel divides the limit in bits by the pixels of a 12-megapixel phone photo (4,032 × 3,024 px) kept at full size; the uncompressed size counts 3 bytes per pixel.
- Bytes
- 8,000,000
- Bits
- 64,000,000
- Pixels in a 12-megapixel phone photo
- 4,032 × 3,024 = 12,192,768
- Bits per pixel at full size
- 64,000,000 ÷ 12,192,768 = 5.25
- Uncompressed, 3 bytes per pixel
- 36,578,304 bytes, 4.57 times the limit
Other limits.
8 MB, answered.
Which platforms ask for 8 MB?
Facebook & Instagram Shop, BigCommerce, and eMAG. The table on this page gives each rule in full and links to the platform's guide.
How many bytes is 8 MB?
8,000,000 bytes: the compressor counts 1 MB as 1,000,000 bytes, the stricter of the two common readings. Counted in units of 1,024, 8 MB would be 8,388,608 bytes, so a file under 8,000,000 bytes is under the limit on either count.
How many bits per pixel does 8 MB leave for a 12-megapixel photo?
5.25, if the photo keeps all 12,192,768 pixels (4,032 × 3,024): 64,000,000 bits divided by 12,192,768. Uncompressed, at 3 bytes per pixel, the photo is 36,578,304 bytes, 4.57 times the limit. The compressor lowers the JPG quality first and reduces the pixel dimensions only when that is not enough.
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