Compressing Product Photos for Slack Messages
Product photos must look accurate because people judge the item by them. Shared images live in workspace storage and get re-downloaded by every viewer, so smaller is kinder to everyone.
Recommended settings for Slack messages
| 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.
Compressing Product Photos
Shoot on a clean background, crop tightly, and resize to about 1600 pixels. Clean backgrounds compress extremely well.
Check colour and texture after compressing. For Slack messages, a slightly larger file that shows the product clearly beats a tiny one that hides detail.
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 Slack messages, 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
- Naming and Organizing Compressed Images for Slack Messages
Good file names help you, your team and search engines.
- Privacy Tips When Compressing Images for Slack Messages
Many online compressors upload your images to a server. That is not always necessary.
- Understanding KB and MB When Preparing Images for Slack Messages
Size limits are written in kilobytes and megabytes, and the units trip people up.
- Aspect Ratios to Use for Slack Messages
Aspect ratio is the shape of the image, and the wrong one leads to awkward crops.
- Naming and Organizing Compressed Images for Landing Pages
Good file names help you, your team and search engines.
- Understanding KB and MB When Preparing Images for Restaurant Menus Online
Size limits are written in kilobytes and megabytes, and the units trip people up.