How to Compress Images for Email Attachments on Android
Android phones can compress images right in the browser. Mail providers cap attachment size and big photos slow down both sending and opening, so a lighter file reaches the inbox faster.
Recommended settings for email attachments
| Setting | Starting point |
|---|---|
| Format | JPEG (WebP where accepted) |
| Width | about 1600 px on the long edge |
| Quality | 78 |
| File size | 500 KB or less |
These are practical defaults. If the platform or form you are using publishes its own limits, follow those instead.
How to Compress Images
Open Chrome, load TheCompressJPEG, and tap the file picker to choose images from your gallery or file manager.
Pick a maximum width of 1600 pixels or a target of 500 KB, then tap Compress and Download. The files land in your Downloads folder, ready for email attachments.
Step by step with TheCompressJPEG
- Open the compress JPEG to 500 KB tool, or the main compressor for custom settings.
- Drop in your image. Nothing is uploaded; it is processed in your browser.
- Set the maximum width to 1600 and the target size to 500 KB.
- Press Compress, check the result and download it.
Quick tips
- Write a size limit slightly below the stated maximum to leave a margin.
- Process private images locally rather than uploading them to unknown servers.
- Crop out distractions so pixels go to the subject.
- Use WebP where it is supported and you control the page.
FAQ
What size should an image be for e-learning courses?
A practical default is about 1600 pixels wide and 200 KB or less, unless the destination states its own limits.
Can I compress images for e-learning courses without uploading them?
Yes. TheCompressJPEG runs entirely in your browser, so your images never leave your device.
Is WebP accepted for e-learning courses?
It depends on the platform. JPEG is the safest choice when you are not sure.
Wrapping up
For email attachments, the reliable recipe is simple: resize to around 1600 pixels, compress at quality 78 or to a 500 KB target, and check the result before you upload. Keep the original so you can always start again.
Related guides
- How to Compress Images for Email Attachments on Windows
On Windows, a browser-based compressor avoids installing extra software.
- How to Compress Images for Email Attachments on Mac
Mac users can compress JPEGs without opening Preview or Photoshop.
- How to Compress Images for Email Attachments Without Losing Quality
Strictly speaking, JPEG compression always discards something, but you can make the loss invisible.
- Batch Compressing Photos for Email Attachments
When you have dozens of images, consistency matters as much as size.
- How to Compress Images for Website Hero Images on Windows
On Windows, a browser-based compressor avoids installing extra software.
- How to Compress Images for Signature Uploads Without Losing Quality
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