Protect your photos or brand them before sharing. Type your text, choose where it sits (a repeating tile or a single corner), then tune the size, opacity, color and angle. A live preview shows the first image as you adjust.
Apply the same watermark to a whole batch at once. Everything is rendered locally, so your originals never leave your device.
How to use
- Add imagesDrop in one or many photos.
- Design the watermarkEnter your text, pick tile or a corner, and adjust size, opacity, colour and rotation.
- Apply and downloadClick Apply & download all to save every watermarked image.
Add text or logo watermarks in the browser
Drop in your photos and stamp them with a text line or an uploaded logo (PNG or JPG) before you share them anywhere. You control the position with nine anchor points or a tiled pattern that repeats across the whole frame, plus size, opacity, rotation, and text color. Everything runs on your own device, so the images you are protecting never leave your computer.
A tiled, semi-transparent watermark is the practical way to make a photo hard to crop or reuse without credit, while a single corner mark keeps a clean look for portfolios and product shots. Because you can batch a whole folder at once and download the results as a ZIP, marking fifty images takes about as long as marking one.
Why a copyright watermark still matters
A visible watermark won't stop a determined thief, but it does two useful things: it deters casual reposting and it keeps your name or handle attached to the image as it travels. For photographers, illustrators, and shop owners, that attribution is often what turns a stolen screenshot into a paying customer.
Set the opacity low enough that the watermark reads as a signature rather than a wall, and place a tiled version over anything you expect people to screenshot. For logos with transparency, upload a PNG so the background stays clear over your photo.
What people use it for
Protect portfolio shots — Add a subtle corner logo to photography or design work before posting it to Instagram, Behance, or your own site.
Brand product listings — Stamp your shop logo on marketplace photos so screenshots still carry your name back to your store.
Tiled anti-theft cover — Lay a repeating, low-opacity watermark across proofs and previews so buyers can review images but not use them for free.
Batch-mark event galleries — Upload a whole shoot, apply one watermark, and download every image as a ZIP in a single pass.
Add a copyright line — Drop a small © Your Name 2026 text mark in the corner of images before they go into a blog or press kit.
Watermark screenshots and mockups — Mark UI mockups or design comps sent to clients so drafts don't circulate as finished work.
Sign artwork and scans — Place a semi-transparent signature over digital paintings or scanned prints you sell online.
Reuse one logo everywhere — Upload a logo PNG once and apply it consistently across an entire set of images with matching size and position.
Watermark your photos without handing them to a stranger's server
Most people reach for a watermark tool at exactly the wrong moment: right before sharing work that isn't public yet. Product shots that haven't launched, wedding proofs a client hasn't paid for, design comps under NDA, a passport scan you need to mark "for visa application only." The whole point of a watermark is control, so it's a strange bargain to upload the original, unmarked file to an unknown backend just to get a marked copy back. Between the request leaving your machine and the download arriving, your clean original sat on someone else's disk.
IMG.DIY runs the entire operation in your browser using the Canvas API. When you drop images in, they're read into memory locally and drawn to a canvas with your text or logo composited on top. Nothing is transmitted. There's no upload progress bar because there's no upload. That single architectural fact removes most of the reasons watermarking tools make people nervous: no retention policy to read, no "we may use your content to improve our services" clause, no question of what happens to files after you close the tab. The answer is that they were never anywhere but your own device.
Because the processing is local, it also keeps working when your connection doesn't. After the first visit the PWA caches itself, so you can mark a batch of photos on a plane, in a client's basement conference room, or on a train through a tunnel. The tool is free, needs no account, and the output carries only the watermark you added — not a second watermark advertising the tool that made it.
What makes it different
- Text or logo, your call. Type a line of text or drop in a transparent PNG of your own mark. Both composite cleanly.
- Tile or corner. Repeat the watermark diagonally across the whole image to defeat cropping, or place a single discreet mark in a corner.
- Full control of the look. Size, opacity, rotation, and color are adjustable, so the mark can be a faint 20% overlay or an unmissable stamp.
- Real batch processing. Load a folder of images, apply one setting, and export them all as a single ZIP — generated in the browser, not stitched together server-side.
- No watermark-on-the-watermark. Free tiers elsewhere often add their own branding; here the only mark is yours.
IMG.DIY vs other watermark tools
| Aspect | Typical online tool (Watermarkly) | Desktop app (uMark) | Design suite (Canva) | IMG.DIY |
|---|---|---|---|---|
| Files uploaded | Yes, to their servers | No, local | Yes, to cloud | No, stays in browser |
| Price | Free tier limited; paid for batch/HD | One-time license (~$50) | Free tier; Pro subscription | Free |
| Works offline | No | Yes | No | Yes, after first visit |
| Batch + ZIP export | Paid feature | Yes | Manual, one at a time | Yes, free |
| Adds its own watermark | Sometimes on free tier | No | On some free exports | Never |
| Install needed | No | Yes | No | No |
| Account required | For full features | No | Yes | No |
To be fair to the alternatives: Watermarkly is polished and has a genuinely nice batch UI; uMark is a mature, capable desktop program that many photographers trust and that also keeps files local; Canva is a full design environment that does far more than watermarking. If you're already living in Canva or you want a dedicated installed app with preset management, those are reasonable picks. IMG.DIY's argument is narrower and specific: for the common job of "mark these files quickly without uploading them or paying," a browser tool that never sees your images is hard to beat — and it costs nothing to try, since there's no sign-up between you and the result.
Why IMG.DIY
Text watermark
Your name, brand or copyright.
Tile or corner
Repeat across the image or place once.
Full control
Size, opacity, colour, angle.
Private
Images never uploaded.