No watermark, no account, no upload. Four things usually go wrong with a free image merger — here is where this one stands on each.
Local processing
JPG, PNG & WebP
Works on phone
Updated
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Your photos are processed in your browser. Nothing is uploaded.
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Private export. No upload, no account, no watermark.
To merge images online free, add two or more pictures to the editor above, choose a layout and download one combined file — with no watermark, no account and no upload. You can merge images side by side, stacked, in a grid or as an overlay, on a computer or a phone, and save the result as JPG, PNG or WebP.
Free is the part of this search that does the work, so start there. Most tools that let you merge images online are free to use and not free to finish: the image merge is free, the clean download is not. The four checks below are the ones worth making on any tool before you spend time arranging photos in it.
The four places a free image merger usually asks for something back.
No watermark, and nothing to dismiss
When you merge images here, the exported file is the composition and nothing else. No corner badge, no semi-transparent name across the middle, no "made with" strip added to the bottom edge. There is no paid tier that removes a mark, because nothing is added in the first place.
There is also no account step. Nothing asks for an email address before the download, and merges are never counted. You can merge images today, close the tab, and come back tomorrow without having created anything to log in to.
Why "no upload" is a structural claim, not a promise
Plenty of sites say your photos are private and mean it — they upload the files, process them on a server, and delete them on a timer. That is a policy. It depends on the operator doing what they said.
This tool makes a narrower claim that does not depend on trust. Your browser reads the files you pick, draws them onto a canvas element in local memory, and encodes the result to a download. No step in that chain has a server in it.
You can verify this rather than believe it. Open your browser's developer tools, switch to the Network tab, merge images of your own and export. You will see the page's own assets load, and no request carrying your image data.
The full path from file picker to saved file. Every box is inside the tab.
What local processing costs you
Processing on your own device has a real trade-off, and a page claiming to be free should be straight about it. Your browser tab has a memory ceiling, and a phone's ceiling is lower than a laptop's. Trying to merge images by the dozen at full camera resolution can be slow, and on an older device it can fail outright.
The workaround is mundane: lower the maximum output width before exporting, or merge in two passes. A server-side tool would absorb this cost for you, and would charge for it in money, an account, or a watermark.
Browsers also cap canvas dimensions, which matters most when stacking many tall screenshots. If an export comes back blank or refuses to save, that ceiling is the usual reason — reduce the output width and it will complete.
One limit is ours rather than the browser's. Exports up to 2,400 pixels on the long edge are unlimited. Above that, three full-size exports a day are free; after that the file still downloads, scaled to 2,400 pixels, and PhotoMerge Pro removes the daily limit.
Merge two images, or a whole set
Most people arrive here to merge two images: a before and after, a pair of product shots, two halves of a document scan. Add both, and the editor places them side by side at an equal height, so neither is cropped or stretched. If they read better top to bottom, switch to Vertical and the two pictures stack at an equal width instead.
To merge pictures in larger numbers, keep adding them. Four or more images arrange well as a grid, where Fit keeps every picture whole and Fill gives a tighter, cropped look. The order of the thumbnails is the order in the merged image, and dragging a thumbnail moves it.
If you would rather read how the merge itself works — decoding, scaling, the 2,400-pixel free limit and what each output width costs — the Image Merger page covers it as a tool spec sheet.
Choosing a format when you merge images
JPG when you merge photographs. It compresses continuous colour efficiently and is accepted everywhere. Raise the quality slider when subtle texture matters; lower it when a form enforces a file-size cap.
PNG when you merge images that contain screenshots, diagrams, text or transparency. It keeps hard edges clean where JPG would leave halos around lettering. Photographic PNGs get large, so it is the wrong default for camera images.
WebP when you want a smaller file at similar quality and you know the destination accepts it. Most current browsers and platforms do; some older internal systems and print workflows still do not.
Merge images online free — common questions
How do I merge two images into one?
Add both images to the editor, keep the side-by-side layout or choose Vertical, adjust the gap if you want one, and download. The two images are saved as one JPG, PNG or WebP file, with no watermark.
Is it actually free to merge images here, or free until I download?
Free through the download, with no watermark to remove. Exports up to 2,400 pixels on the long edge are unlimited; above that, three full-size exports a day are free, and later ones still save at 2,400 pixels. PhotoMerge Pro removes the daily limit.
Do I need an account?
No. There is no signup and no email capture. Nothing about the tool requires an identity.
Are my photos uploaded anywhere?
No. Files are read, composed and exported inside the browser tab. You can confirm it in your browser's Network tab — no request carries your image data. Anonymous interface events, such as which layout was chosen, are counted; image pixels and filenames are not.
Can I merge pictures on a phone?
Yes. Current iPhone and Android browsers can pick from the photo library and save the result. Large camera files take longer to decode and a phone has less memory than a laptop, so lower the output width if an export struggles.
Does an image merge reduce quality?
Source pixels are preserved where possible. Quality loss comes from choices you control: JPG compression, and the maximum-width setting. Export at original width and high quality if you need to keep everything; above 2,400 pixels on the long edge that uses one of the three free full-size exports a day.
Is there a limit on how many images I can merge?
No fixed limit. The practical ceiling is your device's memory, which is lower on phones. A very large set is best merged in two passes.