MergePNG

MergePNG provides a browser-based tool to merge PNG, JPG, and WebP images into a single file or PDF, without uploading the files anywhere. It runs entirely in the user's browser, processes images locally, and allows users to drag files, order them, choose a layout, and download the result. The tool emphasizes that operations occur in the browser and that no data leaves the device during the merge.

MergePNG operates entirely on the client side. All decoding, composition, and encoding are performed in the browser via the Canvas API, and the final output is downloaded to the user's device.

The tool supports merging multiple formats in one job, offers various layout templates (stack, side by side, grids, and compound presets), and allows adding borders, rounded corners, and rotation. It can produce outputs in PNG, JPG, WebP, or PDF, with per-job output selection and a preview on screen before download.

MergePNG has no dedicated paid tier or account system. It operates in-browser and is funded by ads, with no pro features or sign-up requirements.