---
title: "Compress image to 8 MB — free, saved as JPG | Herofab"
description: "Compress photos under 8 MB in your browser. Saved as JPG and never cropped: quality first, pixel size only when needed. Free; nothing is uploaded."
url: https://herofab.app/tools/compress-image-to-8mb
language: en
updated: 2026-10-19
---

# 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.

![Black-dial watch with a mesh strap on white, three-quarter view · Compress image to 8 MB](https://herofab.app/img/ex/watch-packshot-1100.webp)

Made with Herofab · Packshot studio

## Under 8 MB per image, saved as JPG

Limits come from each platform's own help pages, summarised in the [guides](https://herofab.app/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](https://herofab.app/guides/facebook-instagram-shops-image-requirements) | File size | 8 MB maximum | 11 October 2026 |
| [BigCommerce](https://herofab.app/guides/bigcommerce-product-image-size) | File size | 8 MB maximum for each product and variant image | 12 October 2026 |
| [eMAG](https://herofab.app/guides/emag-image-requirements) | 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 |

[Facebook & Instagram Shop image compressor](https://herofab.app/tools/facebook-instagram-shop-image-compressor) · [BigCommerce image compressor](https://herofab.app/tools/bigcommerce-image-compressor)

## 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.

[100 KB](https://herofab.app/tools/compress-image-to-100kb) · [500 KB](https://herofab.app/tools/compress-image-to-500kb) · [1 MB](https://herofab.app/tools/compress-image-to-1mb) · [2 MB](https://herofab.app/tools/compress-image-to-2mb) · [3 MB](https://herofab.app/tools/compress-image-to-3mb) · [4 MB](https://herofab.app/tools/compress-image-to-4mb) · [5 MB](https://herofab.app/tools/compress-image-to-5mb) · [6 MB](https://herofab.app/tools/compress-image-to-6mb) · [10 MB](https://herofab.app/tools/compress-image-to-10mb) · [Image compressor](https://herofab.app/tools/image-compressor)

## 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.