Should I optimize images before or after uploading to WordPress?

Before. Pre-optimizing gives you full control over compression quality and avoids double-compression: when WordPress re-compresses an already-compressed image, it can introduce additional artifacts. Upload optimized images directly for best results.

What image formats does Deliteful support for optimization?

PNG, JPEG, and WebP. JPEG and WebP use adjustable lossy compression; PNG is optimized losslessly with no quality loss.

Will the optimized images look different in my articles?

At quality 80 and above, the difference is not perceptible to readers on standard displays. Quality 75 is the lower threshold for most editorial photography before compression becomes noticeable at large display sizes.

Does this tool work for featured images and hero images?

Yes. Hero images benefit most from pre-optimization since they're typically the largest images on the page and have the greatest impact on load time. Quality 80–85 is recommended for large display images.

Compress Images Before Uploading to Your CMS

Unoptimized images uploaded directly to WordPress or Ghost bloat your media library and slow your pages — CMS platforms compress on their end, but rarely as efficiently as pre-optimized uploads. Deliteful lets content teams compress image batches before they ever hit the media library, resulting in smaller files and better control over output quality.

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Content publishers managing high-volume blogs know that image weight accumulates fast: a site with 500 posts averaging three images each has 1,500 assets in the media library. If those were uploaded unoptimized, every one is oversized. Pre-optimizing with Deliteful before upload is faster than retroactively optimizing a media library with plugins, and avoids re-compression artifacts that double-compression introduces.

The workflow fits naturally into editorial pipelines: writers or editors upload a folder of article images, set quality to 80 (the default), download the compressed batch, and upload to the CMS as normal. JPEG and WebP compression is lossy but adjustable; PNG is lossless. All metadata is stripped, which also prevents accidental publication of internal file paths or software watermarks embedded in image metadata.

How it works

1
Collect article images
Gather all JPEG, PNG, or WebP images for the article or content batch.
2
Upload and compress
Upload to Deliteful and process at quality 80 (default) or adjust for your content type.
3
Upload compressed files to CMS
Add optimized images to your media library — same dimensions, significantly smaller file sizes.

Frequently asked questions

Should I optimize images before or after uploading to WordPress?: Before. Pre-optimizing gives you full control over compression quality and avoids double-compression: when WordPress re-compresses an already-compressed image, it can introduce additional artifacts. Upload optimized images directly for best results.
What image formats does Deliteful support for optimization?: PNG, JPEG, and WebP. JPEG and WebP use adjustable lossy compression; PNG is optimized losslessly with no quality loss.
Will the optimized images look different in my articles?: At quality 80 and above, the difference is not perceptible to readers on standard displays. Quality 75 is the lower threshold for most editorial photography before compression becomes noticeable at large display sizes.
Does this tool work for featured images and hero images?: Yes. Hero images benefit most from pre-optimization since they're typically the largest images on the page and have the greatest impact on load time. Quality 80–85 is recommended for large display images.

Create your free Deliteful account with Google and start uploading lighter images to your CMS today.