# Compress JPG to 1 MB

> Compress a JPG photo to 1 MB or less for email attachments and portals with a 1 MB limit. Runs in your browser, so your files never leave your device. Free, no sign-up, no watermark.

URL: https://www.converterrr.com/compress-jpg-to-1mb

Shrink a JPG to 1 MB or less for email attachments and portals with a 1 MB limit.

API: `POST /api/v1/jobs` with `"operation": "compress", "target_size": "1mb"` (paid plans).

## How to compress a JPG to 1 MB

1. **Add your JPG.** Drop one or more JPG files onto the compressor above, paste them, or click to browse.
2. **1 MB is preset.** The target is already set to 1 MB, and each file is compressed to land at or just under it. You can switch to another size or a percentage to reduce by.
3. **Compress.** Click Compress. The JPG is processed in your browser; nothing is uploaded.
4. **Check and download.** Check the new size, then download each file or all of them as a ZIP.

## Good to know

- 1 MB is comfortable: photos stay sharp at screen sizes, and only very high-resolution originals get a mild downscale.
- At 1 MB, a detailed JPG photo comes out around 3,040 × 2,030 px (6 MP) at good quality; simpler images can stay larger.
- 1 MB here means 1,000,000 bytes, a little under the 1,048,576 bytes some sites mean by 1 MB, so the result fits either way.
- JPG compression runs entirely in your browser with WebAssembly, so nothing is uploaded and your files never leave your device.

## What fits in 1 MB

Roughly how large a detailed JPG photo can be at 1 MB. Simple images, like documents and graphics, can stay larger.

| Image | Roughly fits | Quality |
| --- | --- | --- |
| Photo (3:2) | ≈ 3,040 × 2,030 px (6 MP) | Good |
| Photo (3:2) | ≈ 4,100 × 2,730 px (11 MP) | Acceptable, some artefacts |
| Square photo or avatar | ≈ 2,480 × 2,480 px (6 MP) | Good |

_Rough guide for detailed photos. Real results depend on detail, noise and colour._

## What 1 MB is typically for

- Attaching several photos to one email
- Websites and portals that cap uploads at 1 MB
- Sharing high-quality photos quickly

Limits vary by site and change over time; check the exact number where you're uploading.

## How JPG gets smaller

Re-encodes with an optimised JPEG encoder at a tuned quality and strips bulky metadata.

[Compress JPG by quality level instead](https://www.converterrr.com/compress-jpg)

## Neighbouring sizes

- [Compress JPG to 300 KB](https://www.converterrr.com/compress-jpg-to-300kb): Larger web images
- [Compress JPG to 500 KB](https://www.converterrr.com/compress-jpg-to-500kb): Hero images & forms
- [Compress JPG to 2 MB](https://www.converterrr.com/compress-jpg-to-2mb): High quality under 2 MB

Got a mix of formats? [Compress any image to 1 MB](https://www.converterrr.com/compress-image-to-1mb).

## JPG to 1 MB: frequently asked questions

### How do I compress a JPG to 1 MB?

Drop the JPG onto the compressor above. The 1 MB target is already set, so just click Compress and download the result.

### Will the file be exactly 1 MB?

It aims to land at or just under 1 MB. 1 MB here means 1,000,000 bytes, so it also fits sites that count 1 MB as 1,048,576 bytes.

### How much quality will I lose at 1 MB?

1 MB is comfortable: photos stay sharp at screen sizes, and only very high-resolution originals get a mild downscale. At 1 MB, a detailed JPG photo comes out around 3,040 × 2,030 px (6 MP) at good quality; simpler images can stay larger.

### My JPG is already smaller than 1 MB. What now?

Then it already fits, and compressing it further would only cost quality. Upload it as it is, or pick a smaller target if you need it smaller still.

### What if my JPG can't get down to 1 MB?

Very large or detailed images are scaled down further to reach 1 MB. If the result is too small, pick a larger target.

### What is 1 MB typically needed for?

Common reasons: attaching several photos to one email; websites and portals that cap uploads at 1 MB; sharing high-quality photos quickly. Limits vary by site, so check the exact number where you're uploading.

### Is my JPG private?

Yes. It's compressed inside your browser and never uploaded.