FotoGrid | Photo Grid & Collage Builder with Watermark HTML Template

FotoGrid | Photo Grid & Collage Builder with Watermark HTML Template

FotoGrid is a modern, dark-themed HTML5 tool for building custom photo grid collages directly in the browser. Users define a row/column grid, merge cells into larger blocks, drop in their own photos with precise fit and positioning control, add a fully configurable text or logo watermark, and export the result as a high-resolution PNG — all with zero backend, zero uploads, and zero external dependencies. Perfect as a standalone tool, a bundled feature inside an agency dashboard, or a white-labeled utility for social media / print businesses.

Main Features

• Modern dark, glassmorphism-inspired editor UI
• Custom grid builder (up to 40 × 40 rows/columns)
• Click-and-drag cell merging & splitting for magazine-style layouts
• Per-photo fit control: cover, contain, or stretch, with drag-to-reposition
• Full watermark system: text or logo image, single or tiled mode, 9-point anchor, rotation, opacity, spacing
• Save & Load project as a portable .json file (all photos and settings included)
• One-click size & ratio presets: Instagram Post/Story/Portrait, Instagram 3×3 profile grid, Facebook Cover, X Post, YouTube Thumbnail, A4 & US Letter print (300 DPI)
• Custom canvas size, gap, outer padding, and background color (or transparent PNG export)
• High-resolution export at 1x / 2x / 3x scale
• Drag-and-drop photo upload directly onto any cell
• Fully responsive, works on desktop and touch devices
• Built with HTML5, compiled Tailwind CSS, and vanilla JavaScript — no build step for end users
• No frameworks, no backend, no database, no external runtime dependencies
• Clean, well-organized, and commented source code
• Easy to re-theme via a single Tailwind color/font configuration

Included Sections

• Header with Save / Load / New Project actions
• Build Grid (rows & columns)
• Size & Spacing (presets, canvas size, gap, padding, background)
• Selection & Merge / Split Tools
• Image Panel (fit mode & position)
• Watermark Panel (text/image, mode, anchor, style)
• Export Panel (scale & filename)
• Live Canvas Preview with status bar

Perfect For

• Social Media Agencies & Freelancers
• Instagram Profile Grid Planning
• Photo Studios & Print Shops
• Marketing & Creative Teams
• SaaS Admin Panels & Internal Tools
• Personal Portfolio / Collage Makers
• Any project needing an embeddable, offline-capable image grid editor

Built With

• HTML5
• CSS3 (Tailwind CSS, compiled — no runtime CDN)
• Vanilla JavaScript (ES6)

Package Includes

• HTML File
• Compiled CSS File
• JavaScript File
• Local Icon Library (bundled, no external CDN)
• Documentation

Browser Compatibility

• Google Chrome
• Mozilla Firefox
• Microsoft Edge
• Safari
• Opera

Important Notes

• This is a static, front-end-only HTML application.
• No backend or database is included — all processing happens locally in the browser via the Canvas API.
• Photos are never uploaded anywhere; everything runs and exports client-side.
• Saved .json projects can be reopened later or shared/reused across sessions.
• Easy to customize colors, fonts, presets, and branding.