How to Compress and Convert Images Before Uploading to Blogger

This workflow prepares Blogger images before upload, when you still control their dimensions, format, and quality. It creates delivery copies while keeping the original files available for future edits.

1. Keep the original source

Store the camera photo, design export, or screenshot separately. Never make irreversible edits to the only copy.

2. Choose the display role and dimensions

Decide whether the image is a hero, inline photo, screenshot, logo, or diagram. Inspect the theme and estimate its largest displayed width.

3. Resize a delivery copy

Resize the copy close to the required dimensions. This often creates a larger saving than format conversion alone.

4. Choose JPG, PNG, or WebP

Use JPG or WebP for many photos. Protect text, crisp edges, and transparency with PNG or a carefully tested WebP workflow.

5. Compress, convert, and inspect

Use ConvertiImage to process the copy. Compare file size, then inspect details, text, gradients, and transparent edges.

6. Upload and verify the live post

Upload the approved copy, add descriptive alt text, publish or preview the post, and inspect it on mobile and desktop.

A smaller file is not automatically better. Reject any output that damages important text, faces, product detail, or transparency.

Batch Workflow for Multiple Images

Group similar images by role before processing them. Test one representative file from each group, approve its dimensions and settings, then apply the same workflow to the remaining files. Recheck unusual images individually.

Live Post Verification Checklist

• The image appears sharp at normal size.
• The mobile crop preserves the subject.
• Alt text describes its purpose.
• Width and height reserve appropriate space.
• The main image is not unnecessarily delayed.
• Below-the-fold images do not all compete for immediate loading.

Choose settings first: Review the best image format and size for Blogger posts.

Still slow? Diagnose why Blogger images load slowly.

Full strategy: Return to the Blogger image optimization guide.

Frequently Asked Questions

Resize a delivery copy to the required dimensions first, then compress or convert that copy and inspect it.

Yes. Group similar images, test representative samples, and verify unusual or important assets separately.

Do not undersize the delivery copy or over-compress it. Test at the actual displayed size and on mobile.

No. Retain original source images so you can create new sizes or formats later.