Overlay a logo or PNG watermark on your photo with adjustable size, opacity and position — perfect for branded exports.
Your files are processed entirely in your browser. Nothing is uploaded, stored, or shared — ever.
Process as many images as you want. No queues, no waiting, no daily limits — just instant results.
No sign-up, no credit card, no hidden charges. Every tool is 100% free with full HD output quality.
A quick walkthrough of the Image Watermark workspace — from dropping your file to downloading the finished result.
Drag the divider on each card to compare the original with the result you can produce in under a minute.
Brand every export with your logo PNG.
Consistent branding on every share.
A snapshot of real scenarios where this tool saves time compared to launching heavy desktop software.
A reference table for choosing the right export quality without guesswork.
A full compatibility table so you know exactly which files this tool accepts and how to export them.
Two ways to configure the tool depending on how much control you want — both produce a clean result.
A start-to-finish example you can copy step by step — no assumptions, no jargon.
Three patterns that trip up new users, shown side-by-side so you can spot them at a glance.
80%+ opacity makes the image itself unusable.
Corners get cropped away in one click.
Black watermark on a dark photo disappears.
Image Watermark puts you back in control of image ownership by stamping your name, logo or signature onto every file before it ever leaves your device. It's part of the Alpha Image Premium suite — 40+ browser-based tools built for creators who value speed, quality and privacy in equal measure.
Image Watermark is a free, browser-based watermark tool that overlay a logo or png watermark on your photo with adjustable size, opacity and position — perfect for branded exports. It runs entirely on your device using standard web APIs — no upload, no queue, no account, and no copy of your file kept anywhere outside your browser.
Most online tools that offer this workflow require an upload to a server you don't control, where your file may be logged, cached or even reused. Image Watermark takes a different approach: everything happens locally, the interface is designed for a single focused task, and the output is a clean file you can use in commercial work with no licensing strings attached. That combination — professional quality, no privacy trade-off, no cost — is what makes Image Watermark the right default when you need to get this specific job done.
Under the hood, Image Watermark uses the HTML5 Canvas API (and, where relevant, Web Workers) to decode your file, apply the transformation you request and re-encode the result in your chosen format. Because the pipeline is standard web technology, the results are consistent across every modern browser and reproducible from device to device. You control every parameter that affects the output, and the live preview updates as you adjust so you can iterate visually instead of guessing.
Real-world scenarios where Image Watermark produces professional results in seconds.
Once the page has loaded, most operations continue to work without an internet connection because all processing is client-side. You'll only need connectivity to load the page or fetch remote resources.
No. We do not attach analytics to the file itself, do not log its contents and do not share any information about it with third parties. The tool's job is to process your file, not to observe you.
Image Watermark works in every modern desktop and mobile browser — Chrome, Edge, Firefox, Safari, Brave, Opera, Arc and their mobile equivalents. Very old browsers without Canvas support are not supported.
Yes. Image Watermark has no daily caps, no export limits, no watermarks and no premium tier. Every feature that appears in the interface is available to every visitor immediately.
Image Watermark was built to make one specific job effortless — without asking you to trust a server with your file, install anything, or subscribe to something. Bookmark the page, come back whenever you need it, and every visit will feel exactly as fast as the first one. If a related workflow comes up next, the Continue Reading section below points you to the guides and tools that pair naturally with Image Watermark.
Hand-picked guides, tutorials and tools that pair with Image Watermark.
Protect your photography and design work with tasteful text or logo watermarks — five styles that actually look great.
Overlay a logo or PNG watermark on your photo with adjustable size, opacity and position — perfect for branded exports.
Overlay custom text on your photo with font, size, color, opacity and position control to protect or brand your work.
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Image Watermark is a free, browser-based tool from Alpha Image Premium. Overlay a logo or PNG watermark on your photo with adjustable size, opacity and position — perfect for branded exports.
Image Watermark is part of the Alpha Image Premium watermark suite, designed to help creators protect and brand their visual work without trusting a third-party server with the originals. Overlay a logo or PNG watermark on your photo with adjustable size, opacity and position — perfect for branded exports. It gives you full control over text, position, opacity, font size and colour, so the watermark sits exactly where you want it and matches the tone of the underlying image.
Watermarking is one of the most practical ways to deter casual re-use of your work. Photographers and illustrators use Image Watermark to stamp portfolio previews before sending them to clients. Bloggers and stock-photo creators apply branded watermarks so their images keep crediting them when they are reshared on Pinterest, Reddit or Twitter. Course creators add timestamps and copyright marks to slides and screenshots. Small businesses use it on product photography so competitors cannot drop the image straight into their own store.
Image Watermark runs entirely on the HTML5 Canvas API. That means it works in Chrome, Edge, Firefox, Safari, Brave, Opera and Arc on desktop, plus mobile Chrome and mobile Safari on phones and tablets. Input supports JPG, JPEG, PNG, WEBP, GIF and BMP, and output can be saved as JPG, PNG or WEBP at the quality you choose. A live file-size estimate updates as you adjust settings so you can balance branding with file size.
Privacy is the whole point. The reason many photographers refuse to use free watermarking sites is that those sites require you to upload the very originals you are trying to protect — usually with no clear retention policy. Image Watermark solves that by never sending the image anywhere. The photo, the watermark and the final composite all stay inside your browser tab. There is no upload, no server-side processing, no analytics on the pixel data, and nothing for an attacker to steal because the file is never transmitted. That makes the tool genuinely safe for client previews, unreleased work, paid content and any image you would never want sitting on someone else's disk.
Use Image Watermark before you share previews, portfolio shots, product photography or any image you want to remain attributable to you when it inevitably gets reshared.
Watermarking is especially valuable for client previews, stock imagery, course materials and marketplace listings — anywhere someone might download and repost your work without credit.
Reach for it any time you want a clear, visible chain of ownership on a file that will travel across social media, forums or messaging apps.
Save time on simple edits. Skip launching heavy desktop software for a single quick task — the page is open before Photoshop would finish loading.
Protect sensitive content. ID scans, screenshots of private chats, unreleased product shots, medical images — everything stays on your machine.
Cut storage and bandwidth costs. Smaller, properly formatted files load faster, rank better on the web and use less storage in cloud drives and email.
Work from anywhere. All you need is a browser. Use the same tool from a laptop, tablet, library computer or phone with identical results.
Zero learning curve. Every control has a clear label and live preview, so even first-time users get a professional result on their first try.
Predictable, repeatable output. Numeric inputs and consistent algorithms mean the same settings always produce the same file — great for batch workflows.
No vendor lock-in. There are no proprietary project files. Bring any standard image or text in, take any standard format out.
Free forever for personal and commercial work. Use the output in client projects, paid videos, printed materials or commercial websites with no licensing fees.
Friendly to slow connections. Because nothing has to upload, the tool feels equally fast on a fiber connection or a spotty mobile network.
Safer than third-party uploaders. Many free online tools quietly retain your uploads — running locally removes that entire class of privacy risk.
Photographers. Watermark client previews, portfolio shots and stock imagery before sharing them online.
Illustrators & designers. Protect concept art, fan art and process shots that are easy to repost without credit.
Bloggers & creators. Brand featured images so reshared screenshots still link back to your site.
Course creators. Add copyright stamps to slides, worksheets and screen recordings extracted as images.
E-commerce sellers. Stamp product photos to make it harder for competitors to copy your listings.
Real-estate agents. Brand listing photos so they are recognisable when reshared on portals and social media.
Journalists. Add visible attribution to photos used in articles, especially when sourced from interviews or events.
Small businesses. Protect menus, infographics and marketing visuals shared across social media.
Yes. Image Watermark is 100% free with no sign-up, no watermark on your output, and no daily limit. Use it as often as you need on as many devices as you want.
No. Everything happens locally inside your browser using standard web APIs. Your file or text never leaves your device, which means faster results and complete privacy.
Yes. The interface is fully responsive and tested on iOS Safari, Android Chrome and modern desktop browsers. Touch gestures work for drag-and-drop uploads and slider controls.
Every modern browser, including Chrome, Edge, Firefox, Safari, Brave, Opera and Arc on desktop, plus mobile Chrome and mobile Safari on phones and tablets. There is no installation or extension required.
No. There is no sign-up, no email confirmation and no profile. Open the page and you are ready to work — the same is true on any device you switch to later.
Yes. You own anything you create with the tool. We claim no rights over your input or output, and there are no licensing fees or attribution requirements.
Nothing — because nothing was ever uploaded. The in-memory copy is discarded the moment you close the tab, and your original file on disk is left untouched.
Once the page is loaded the tool runs entirely in the browser, so you can disconnect from the internet and keep working. The next time you open the page online, you will get any UI updates.
There is no hard cap from us. The practical limit is your device's available memory — modern phones and laptops handle very large files comfortably.
Use the Feedback page linked in the site footer. We read every submission and use it directly to improve the tools.
A determined editor can attempt to clone over any watermark, but a well-placed semi-transparent mark across the subject is a strong deterrent against casual re-use, hot-linking and lazy reposting.
Centre or diagonal placements are much harder to crop or clone out than corner watermarks. For maximum protection, place the mark across the focal subject; for branding, a discreet corner mark is fine.
Other tools in the Watermark category you may find useful.
Go deeper with in-depth articles from the Alpha Image blog.
Image Watermark strikes the balance between protecting your work and keeping the image beautiful. Place the mark across the subject, tune opacity to 30-60%, size the text so it reads on mobile, and reserve the clean, unmarked version for paying clients. Because everything runs locally, even your unwatermarked originals never leave your device.
Explore more tools in the Watermark category.
