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THINKFORU

Image Overlay

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Free Image Overlay Tool Online – Blend, Watermark & Combine Photos | ThinkForU
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Free Image Overlay Tool Online

Drag & position overlays in real-time. Adjust opacity, blend modes, filters — everything updates live with zero lag.

Live Preview Drag to Position 12 Blend Modes Filters Multi-Layer PNG / JPG / WebP 100% Private

Upload a base image to start

Use the panel on the right →
Drag overlay anywhere on canvas
Everything updates live

Drop image here
Upload Main ImageJPG · PNG · WebP · GIF
Add Overlay ImagePNG with transparency recommended
Overlay Opacity100%
🎨
Blend Mode
📐
Transform
🔲
Alignment
✨
Filters

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Free Online Image Overlay Tool — Combine Photos, Add Logos & Watermarks with Live Preview

ThinkForU's image overlay tool gives you a professional split-screen editor: your canvas on the left updates live as you adjust every slider, with no Apply button needed. Drag your overlay image anywhere, resize it, rotate it, and switch blend modes — all in real time.

🖱 Drag to Position

Click and drag your overlay anywhere on the canvas. Position updates live as you move.

⚡ Live Preview

Every slider and control instantly updates the canvas — opacity, scale, rotation, filters, blend modes.

🎨 12 Blend Modes

Normal, Multiply, Screen, Overlay, Darken, Lighten, Color Dodge, Color Burn, Soft Light, Hard Light, Difference, Exclusion.

🎛 Image Filters

Brightness, contrast, saturation and blur on the overlay layer. Reset anytime.

📦 3 Export Formats

Download as PNG (lossless), JPEG (smaller file), or WebP (best web compression).

🔒 100% Private

Everything runs in your browser via HTML5 Canvas. Your images never touch any server.

How to Overlay Two Images Online

  1. Click Upload Main Image on the right panel — your photo loads into the canvas.
  2. Click Add Overlay Image — your logo, watermark, or second photo appears on top.
  3. Drag the overlay anywhere on the canvas to reposition it.
  4. Use the Opacity slider to adjust transparency — updates live.
  5. Toggle Advanced Mode for blend modes, transform controls, alignment snap, and filters.
  6. Choose PNG / JPEG / WebP and click Download Image.

FAQ

Yes — every single control (opacity, scale, rotation, blend mode, filters) updates the canvas instantly as you move sliders or click options. No Apply or Render button required.
Yes. Once an overlay is added, click and drag it directly on the canvas to reposition it. The X/Y coordinates in the Transform panel update in sync. Works on mobile too (touch drag).
Never. All processing happens locally in your browser using HTML5 Canvas. ThinkForU has a strict Zero Data Storage Policy.
Advanced Mode unlocks blend modes, precise X/Y/scale/rotation transform controls, alignment snap grid, and image filters (brightness, contrast, saturation, blur) for the overlay layer.
PNG for logos and designs with transparency (lossless). JPEG for photographs where file size matters. WebP for the best combination of quality and compression for web use.