Collage Maker is a free photo collage tool that runs in phone and desktop browsers with no install. Add 2 to 30 photos and choose from 15 layouts, 34 templates and 12 freeform designs, plus stickers, text and 13 frame shapes. It accepts JPG, PNG, WebP and HEIC files up to 20 MB each.
Export as PNG or JPG up to 4096 px, with a 300 DPI check for print. The current tier is free, with no account and no watermark, and a paid Pro tier is listed as planned with no price or date. Photos are processed in the browser and are not uploaded. An optional assistant needs an online service and sends only written requests and layout settings.
Collage tools often watermark photos, require an account or upload images to a server. Collage Maker is a free browser tool so people can make collages with photos processed in the browser.