Why Your Images Are Too Large for Facebook Posts
If an upload keeps failing, the image is usually larger than it needs to be in more ways than one. Facebook re-encodes uploads, and starting from a clean, right-sized JPEG gives it less room to introduce blocky artefacts.
Recommended settings for Facebook posts
| Setting | Starting point |
|---|---|
| Format | JPEG (WebP where accepted) |
| Width | about 2048 px on the long edge |
| Quality | 78 |
| File size | 400 KB or less |
These are practical defaults. If the platform or form you are using publishes its own limits, follow those instead.
Why Your Images Are Too Large
Modern cameras capture 12 to 50 megapixels. That detail is useful for printing posters but rarely for Facebook posts, where about 2048 pixels wide is plenty.
Metadata, PNG format for photos, and maximum-quality saves also add weight. Re-encoding as JPEG at quality 78 after resizing solves all three at once.
Step by step with TheCompressJPEG
- Open the compress JPEG to 300 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 2048 and the target size to 400 KB.
- Press Compress, check the result and download it.
Quick tips
- Use WebP where it is supported and you control the page.
- Never re-compress an already compressed JPEG if you can avoid it.
- Strip metadata from images you share publicly.
- Always keep the original file and compress a copy.
FAQ
What JPEG quality should I use for e-learning courses?
Quality around 78 keeps photos looking natural while cutting file size substantially.
Will compressing reduce image quality for e-learning courses?
Some detail is removed, but at sensible settings the difference is not visible at normal viewing size.
How do I compress many images for e-learning courses at once?
Drop all of them into the tool together and use Download all to get a single ZIP.
Wrapping up
For Facebook posts, the reliable recipe is simple: resize to around 2048 pixels, compress at quality 78 or to a 400 KB target, and check the result before you upload. Keep the original so you can always start again.
Related guides
- Image File Size Checklist for Facebook Posts
Run through this list before you upload.
- How to Get a JPEG Under 400 KB for Facebook Posts
Hitting an exact size limit is easier with a target-size compressor.
- Does Compression Affect Image Quality for Facebook Posts?
Yes, but how much depends on your settings.
- Fixing Blurry Images After Compressing for Facebook Posts
Blurriness after compression usually comes from resizing too far, not from JPEG itself.
- Image File Size Checklist for Shopify Product Photos
Run through this list before you upload.
- Does Compression Affect Image Quality for Real Estate Listings?
Yes, but how much depends on your settings.