SEO Text Overlay — Bulk Local Image Processor with Dynamic Variables
Batch-overlay dynamic text onto images for local SEO. Auto-increment city names, phone numbers, or map coordinates using template variables like {City}, {Country}, {Phone}. Perfect for mass-production of location-specific marketing assets.
Data Privacy
100% Client-Side. Your data never leaves your device. No server transfers. Zero AI training data retention.
Frequently Asked Questions
How does dynamic variable overlaying work?
Upload a batch of images and provide a CSV or text list mapping locations to their data. Use placeholders like {City}, {Country}, {Phone}, {Address} in your text template. The tool auto-replaces each variable for every image batch, then exports all overlayed images at once.
Can I customize the text style and positioning?
Yes. Adjust font size, color, opacity, shadow, and position on canvas. Preview real-time on one image, apply to all, then download the entire batch in seconds.
What This Tool Does
This tool applies templated text to multiple images using CSV data substitution. Supports font customization, positioning, shadow effects, and bulk batch processing — all in your browser.
Technical Specifications
- ✓Canvas API text rendering with font families
- ✓CSV parsing with template variable substitution ({City}, {Country}, {Phone})
- ✓Text shadow and opacity effects
- ✓Batch processing up to 1000+ images simultaneously
- ✓Export to JPEG and PNG with configurable quality
Performance Comparison
| Processing Method | Traditional Server-Side | Our 100% Client-Side |
|---|---|---|
| Data Privacy | Upload to server | 100% Local |
| Processing Speed | Network latency | Instant |
| Server Costs | Per-request billing | Free forever |
Common Questions
How does this work?
This tool processes your files entirely in your web browser using the Canvas and FileReader APIs. No data is sent to any server.
Is my data secure?
Yes. All processing happens locally on your device. We never upload, store, or analyze your files on any server.
Can I use this offline?
Yes, once the page loads, the tool works completely offline. No internet connection needed after initial page load.