InfyTool
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Add a watermark to images

Your name or brand across every photo — positioned or tiled, as subtle or bold as you like, applied to whole batches on your own device.

JPG, PNG, WebP, HEIC… · the watermark is applied automatically and re-applied live as you tune it

No size limit · files are processed on your device and never uploaded · how it works

Advanced settings (optional)
Watermark
Text

Your name, brand or URL. Results re-render live.

Position

One mark at this corner or edge.

Size
5%

As a share of the image's shorter side, so every photo in a batch gets a proportional mark.

Opacity
35%
Colour
#ffffff
Output
100

JPG stays JPG, PNG stays PNG (WebP/HEIC become their nearest match).

Runs in your browser. Files are never uploaded — you can go offline after the page loads.

How to use the Watermark Images

  1. Drop your photos — the watermark is applied immediately with the current settings.
  2. Tune the text, position (or tiling), size, colour and opacity; every image re-renders live.
  3. Download one image, or the whole batch as a ZIP.

Easy to use

Drop files, pick options, download. Whole folders at once, no signup, no daily limit.

Best quality

The same engines the professionals use — SVGO, resvg, MozJPEG, libwebp, libavif — compiled to run in your browser.

Private & secure

Files are processed on your device and never uploaded. Close the tab and nothing remains anywhere.

Watermarks that do their job

A watermark has two very different jobs, and they want different settings. Attribution — making sure your name travels with the image — wants a small, subtle mark: bottom-right, 25–40% opacity, sized around 4–6%. It credits without spoiling. Protection — making the image unusable without permission — wants the tiled mode: the mark repeats diagonally across the whole photo at low opacity, so there is no clean crop and retouching it out is more work than licensing the image.

Batch behaviour

The size setting is a percentage of each image's shorter side, so a batch of mixed portrait and landscape photos gets a proportionally identical mark on every one — no giant text on thumbnails, no invisible text on large photos. The soft dark outline behind the text keeps it readable on both light skies and dark corners.

Before publishing

Watermarked photos usually head for the web — run them through the compressor for faster pages, or the social media resizer for platform-exact sizes; both keep the watermark since it is baked into the pixels.

Frequently asked questions

Where should I place a watermark so it cannot be cropped out?

Corners crop off easily. For real protection use the tiled mode at low opacity — a repeating diagonal mark across the whole image is impractical to remove. For simple attribution, bottom-right at 30–50% opacity is the convention.

What opacity should a watermark be?

25–40% reads clearly without ruining the photo; 10–20% is a subtle attribution; 50%+ is for proofs and previews you do not want used at all.

Can I watermark many photos at once?

Yes — drop a folder, set the watermark once, and every photo gets it in the same position, scaled to each image’s size. Download individually or as one ZIP.

Are my photos uploaded?

No — the watermark is drawn onto each image in your browser and nothing leaves your device.

Image ResizerPixels, cm, inches, crop, DPI Image CompressorSmaller files, same look Social Media Image ResizerEvery platform size, fit or fill

Your files never leave your device

Most online converters upload your file to a server. InfyTool ships the actual encoders to your browser as WebAssembly instead, so processing happens inside your tab — faster for batches, and nothing to delete afterwards.

  • No upload, ever. Turn off Wi-Fi after the page loads and every tool keeps working.
  • No limits. No file-size cap, no queue, no watermark, no account.
  • Runs on your CPU. Batches use several cores in parallel; nothing is throttled.

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