Image Overlay Text

The Image Overlay Text tool adds styled text on top of any image. Useful for social media posts (adding captions), meme creation (top and bottom text), quote images (overlay inspirational text on photos), product marketing (call-to-action on product photos), or any task requiring text-over-image combinations. Configure font, size, color, position, outline, shadow, and background box for maximum visibility on any underlying image.

Upload an image, add text blocks (one or many), position them by dragging or typing coordinates, style with font family, size, color, and effects. Preview updates in real time. Multiple text layers supported — each with independent styling. Download the composited image as PNG (preserves transparency) or JPG. All processing runs in your browser.

Text overlay uses Canvas 2D text rendering:

1. Load image into canvas
2. Configure text properties: font (family, size, weight, style), fill color, stroke (outline)
3. Position text (absolute coordinates or aligned to sides/center)
4. Apply effects: shadow (offset, blur, color), outline stroke, background box
5. Draw text via fillText or strokeText
6. Export canvas as image

Font handling: browsers have system fonts available. For guaranteed rendering across environments, use web-safe fonts (Arial, Times, Helvetica) or load custom web fonts via FontFace API.

Font properties:
- Family: Arial, Times New Roman, Courier, Helvetica, Georgia, Verdana
- Size: from 8pt for captions to 100pt+ for meme text
- Weight: normal, bold
- Style: regular, italic

Fill vs stroke:
- fillText: solid color fill
- strokeText: outline only
- Both: draw stroke first, then fill on top for outlined filled text

Shadow: ctx.shadowColor, shadowBlur, shadowOffsetX/Y. Subtle shadow improves readability over busy backgrounds.

Background box: draw filled rectangle behind text before drawing text. Common for caption plates. Rectangle dimensions computed from measureText() width plus padding.

Alignment:
- ctx.textAlign = \\\"left\\\" | \\\"center\\\" | \\\"right\\\"
- ctx.textBaseline = \\\"top\\\" | \\\"middle\\\" | \\\"bottom\\\"

Multi-line text: fillText doesn\u2019t handle line breaks automatically. Split text on \\n and draw each line at increasing y offset (font size × line height).

Meme styling: Impact font, uppercase, white fill, black stroke, top and bottom positioned. The \\\"classic meme\\\" look.

Positioning: often easier to use relative positions (top-left, center, etc.) than absolute pixels since images vary in size.

Opacity: set globalAlpha before drawing for semi-transparent text.

Multiple text layers: track each text block separately with its own properties, render sequentially.

Performance: text rendering is fast. Multi-megapixel images with text overlays render in milliseconds.

Compared to Canva or Figma, this tool is focused on single-purpose text overlay. Canva has templates and design features; this tool handles text-over-image quickly.

Compared to Photoshop text tools, this tool is free and instant. Photoshop offers far more text features and effects; this tool covers common overlay needs.

Compared to phone meme apps, this tool preserves image quality better. Phone apps often compress; browser-based overlay doesn\u2019t.