Batch Image Watermark Documentation & Guide
Free online add text or logo watermarks to multiple images locally in your browser. Position, size, opacity, and tiling. Works offline. Enjoy fast, no-signup, browser-based results with offline-friendly processing.
Overview
Batch Image Watermark is an easy and free online tool that runs in your browser.
Free online add text or logo watermarks to multiple images locally in your browser. Position, size, opacity, and tiling. Works offline. Enjoy fast, no-signup, browser-based results with offline-friendly processing.
This documentation explains what the tool is for, what inputs it supports, and practical step-by-step usage so the page remains searchable and useful.
Tip: start with a small sample to validate settings before processing large files.
What you can do with this tool
Key capabilities (based on the actual UI and code):
- Supports files: image/*
- Runs in your browser (local-first)
Inputs & supported formats
Accepted file types: image/*
Folder selection is not detected in the UI.
No external vendor libraries detected from the HTML includes.
How to use (step-by-step)
1) Open the tool page.
3) Provide input (text / options / files).
5) If file input is available, drag & drop files or use the file picker.
6) Run the main action and review the output/preview.
7) Copy / download / export the result.
Privacy, offline & limitations
Local-first by design: whenever possible, processing happens on your device.
No registration is required. Avoid pasting secrets or private data on shared devices.
No network requests were detected in the main script; it should work locally once loaded.
No WebWorker usage detected.
Troubleshooting
If the tool does nothing: check required inputs/options and try a smaller sample.
If a file fails to load: confirm the file type is supported and retry with a smaller file.
If something looks wrong: reset options and retry with default settings.
FAQ
Is Batch Image Watermark free to use?
Yes. It is an easy and free online tool with no sign-up required.
Will my files be uploaded?
Most tools process locally in your browser. If the tool needs network requests, it will be part of the workflow you run.
Does it work on mobile?
Yes. It is designed to be responsive and work on phones and tablets.
Which browsers are supported?
Modern browsers like Chrome, Edge, Firefox, and Safari.
Why is it slow with large files?
Processing happens in the browser and depends on your device CPU/memory.