The search for a 'free online photo collage maker' typically ends in frustration. Most tools promise 'free' but deliver watermarks across your finished collage, resolution caps at 720px, mandatory account creation before download, or upload requirements that compromise the privacy of your personal photos. MergeFrame breaks this pattern entirely. The tool runs in your browser using Canvas API — no upload, no server, no account, and no watermark on any output. You open the page, choose a grid layout (2×2 for 4 photos, 2×3 for 6, 3×3 for 9), drag your images into the cells, and download the finished collage as a lossless PNG. That's the complete experience. No 'continue with Google' popup, no email verification loop, no 'your free trial has expired' modal, and no watermark stamped across your vacation photos. The grid collage approach — equal cells with uniform spacing and proportional image fitting — produces a polished, professional look that works for every use case: social media posts that display multiple images in one frame, product comparison collages for e-commerce listings, family memory boards for print and framing, portfolio presentations that showcase work cohesively, and before-and-after comparisons that tell transformation stories. Adjust cell spacing from 0 to 20 pixels to control visual density, add optional borders when images share similar background colors, and export at any resolution up to 4000px. The tool handles format mixing gracefully — JPG, PNG, WebP, and HEIC files can all be combined in the same collage. For users who create collages regularly, there's no daily limit, no monthly cap, and no forced upgrade path. The optional Pro tier adds batch processing, custom backgrounds, and PDF export for power users, but the core collage maker — full resolution, all layouts, zero watermarks — is genuinely free forever. Because processing is entirely client-side, your photos never leave your device. No upload delay, no server-side compression that degrades quality, and no risk of your personal images being stored, scanned, or used to train AI models on a third-party server. This is the collage maker that respects what 'free' actually means.