Image Watermark Adder

Add a text watermark to any image — choose position, size, colour and opacity. 100% in your browser.

100% in your browser — files never uploaded.
Postcrest — full AI image suite

Need more than a converter? AI background removal, upscale, edit and generate — one workspace.

Get the AI toolsSee pricing

How to use the Image Watermark Adder

  1. 1
    Drop your image
    PNG, JPG or WebP.
  2. 2
    Configure the watermark
    Set the text, size, colour, opacity and position.
  3. 3
    Process + download
    Output is ready in seconds, no upload.

About this tool

All processing happens in your browser via the Canvas API. No server roundtrip, no upload, no watermark, no per-file limits.

Output is watermark-free and licensed for any use — personal or commercial.

Frequently asked questions

Is it free?
Yes — no signup, no watermarks from us.
Are files uploaded?
No — every step runs in your browser.
Max file size?
Limited only by your device memory.
Commercial use?
Yes — output is yours.
Mobile-friendly?
Yes.

Need more than free tools? Get Postcrest's full AI image suite.

AI background removal, AI upscaling, AI image editor and AI photoshoot — every leading model in one workspace.

AI Image Generator
Every leading model — Flux, Nano Banana, Seedream, GPT-Image, SDXL.
AI Image Editor
Inpaint, outpaint, object removal — describe the edit, AI applies it.
AI Background Remover
Pixel-perfect cutouts in seconds — transparent PNG or any new scene.
AI Image Upscaler
Upscale to 4K, face-aware, print-ready, watermark-free.
Get started — access every AI tool
50% off your first 2 months. Cancel anytime.