Blogger no gallery feature. You add images one by one vertical - long post, slow. Gallery = 2-3 images per row, grid, looks like portfolio, fast.

In Post #126, add gallery in Blogger.

Step 1: Add Gallery CSS Once

  1. Blogger → Theme → Edit HTML
  2. Find ]]></b:skin>
  3. Paste above it:
/* Gallery Post 126 */
.gallery{display:grid;gap:10px;margin:20px 0;}
.gallery-2{grid-template-columns:1fr 1fr;}
.gallery-3{grid-template-columns:1fr 1fr 1fr;}
.gallery-4{grid-template-columns:1fr 1fr 1fr 1fr;}
.gallery img{width:100%;height:200px;object-fit:cover;border-radius:10px;transition:0.3s;cursor:pointer;}
.gallery img:hover{transform:scale(1.02);box-shadow:0 6px 18px rgba(0,0,0,0.15);}
@media(max-width:600px){
  .gallery-3,.gallery-4{grid-template-columns:1fr 1fr;}
  .gallery img{height:150px;}
}
@media(max-width:400px){
  .gallery-2,.gallery-3,.gallery-4{grid-template-columns:1fr;}
  .gallery img{height:auto;}
}
  1. Save theme

Step 2: Gallery HTML - Copy Paste in Post HTML Mode

1. 2 Column Gallery (Best for Before/After)

<div class="gallery gallery-2">
<img src="IMAGE1.jpg" alt="Before" />
<img src="IMAGE2.jpg" alt="After" />
</div>

2. 3 Column Gallery (Most Used - Portfolio)

<div class="gallery gallery-3">
<img src="IMAGE1.jpg" alt="Template 1" />
<img src="IMAGE2.jpg" alt="Template 2" />
<img src="IMAGE3.jpg" alt="Template 3" />
<img src="IMAGE4.jpg" alt="Template 4" />
<img src="IMAGE5.jpg" alt="Template 5" />
<img src="IMAGE6.jpg" alt="Template 6" />
</div>

3. 4 Column Gallery (For Many Screenshots)

<div class="gallery gallery-4">
<img src="1.jpg" alt="1"/>
<img src="2.jpg" alt="2"/>
<img src="3.jpg" alt="3"/>
<img src="4.jpg" alt="4"/>
</div>

4. Gallery with Captions (Combine Post #125 + #126)

<div class="gallery gallery-3">
<figure style="margin:0;"><img src="1.jpg" alt="Home"/><figcaption style="font-size:12px;text-align:center;margin-top:4px;">Home Page</figcaption></figure>
<figure style="margin:0;"><img src="2.jpg" alt="Post"/><figcaption style="font-size:12px;text-align:center;margin-top:4px;">Post Page</figcaption></figure>
<figure style="margin:0;"><img src="3.jpg" alt="Mobile"/><figcaption style="font-size:12px;text-align:center;margin-top:4px;">Mobile View</figcaption></figure>
</div>

Step 3: Inline No Theme Edit Version

<div style="display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0;">
<img src="IMAGE1.jpg" style="width:100%;border-radius:10px;" />
<img src="IMAGE2.jpg" style="width:100%;border-radius:10px;" />
</div>

Step 4: Where to Use Gallery?

  • Template posts: Show 6 screenshots in 3 column gallery (Post #13-20)
  • Before/After SEO posts: 2 column gallery
  • Portfolio page: Your work gallery
  • Next Post #127: Add lightbox - click gallery image opens big popup

Post #126 Complete - Gallery without plugin.

Next Post #127: How to Add Lightbox Effect in Blogger Images - click to enlarge popup.