Free Browser Tools: Remove Watermarks and Cutouts, All Locally Processed
Two completely free tools that run entirely in your browser: repair visible watermarks you outline, and extract subjects from photos to export as transparent PNGs. No uploads, no queues, just log in when you need to download.
Tags: ["Watermark Removal", "Background Removal", "Free Tools"]
Most watermark removal and cutout tools follow a similar pattern: upload your file to a server, wait in line behind others for results, and after a minute or two, get your processed file—provided the free tier doesn't first demand you register or link a card. KinoViz takes a different path: two small tools created for our team's daily asset production, with models that run directly in the browser and perform calculations on your own machine. This means no uploads and no waiting in line. Both tools are entirely free; you only need to log in with a KinoViz account at the very last step, when you want to download the final product.
Why Local Processing Instead of Uploading to a Server
Placing the models in the browser rather than on a server might sound like a technical detail, but it fundamentally changes the user experience. Your files never leave your device unless you choose to download or share the results—with no upload step, there's nothing to wait for on the server side. There's also no queue, as there's no server capacity to compete for; the only limitation is the performance of your own machine. Since there's no server-side billing, trying these tools costs absolutely nothing. The models are downloaded to the browser only on the first use and are then cached for direct use next time.
The trade-offs are also transparent: since your device is doing the work, the speed depends on your machine. The limits on file size and duration exist because the memory a browser tab can allocate to a model is finite. These limitations are clearly stated—each tool makes them visible in a prominent location.
Clean Up: Repairing Watermarks You Outline
Searching for "image watermark removal" or "video watermark removal" often yields results that either require uploading and then subscribing, or claim to remove "anything" with often blurry results. Clean Up is intentionally more focused: you outline a visible watermark—like a logo, timestamp, or subtitle bar—and the model repairs that selected area on your machine.
A crucial boundary of its capability: when processing videos, Clean Up applies the same fixed outline to every frame. There's no motion tracking or temporal consistency model, so it's best suited for stationary watermarks—corner logos, always-on timestamps—rather than those that move across the screen. Results can be downloaded directly, or you can save an additional ZIP file containing the original file, its SHA-256 hash, and your selection area, useful for documenting the process later.
It's also important to clarify what this tool cannot do. It does not detect or remove invisible markers like SynthID, and any pixel modification or re-encoding may invalidate a file's C2PA content credentials. This is a tool for cleaning up your own assets—such as timestamps added by your recording device or self-imposed overlays you wish to remove—not for erasing the signatures on others' work. Please only process content you own or have explicit permission to edit.
Best for: Reusing old footage by removing timestamps from your own camera recordings, cleaning up fixed corner logos in screen recordings, or fixing stationary broadcast logos on footage you have the rights to edit.
Background Removal: Cut Out Once, Change Backgrounds Infinitely
A cutout tool that cleanly exports transparent PNGs is a handy assistant to have. KinoViz 的版本 makes it simple: drag in a photo, and a single inference extracts the subject. You can then instantly switch between transparent, white, black, or custom colors—the model doesn't run a second time; the actual cutout computation happens just once.
Currently, it only supports images, not videos. The model used is lightweight, ensuring speed, though it's not flawless. Before use, it's recommended to manually inspect edges for fine hairs, fur, and semi-transparent objects. For assets with clean edges—product shots on solid backgrounds, portraits against simple backgrounds—it can complete the task in seconds.
Best for: Isolating product images from their backgrounds for compositing, extracting subjects from photos to place in new scenes, or preparing a transparent PNG that will later become a dynamic layer.
From Processed Files to Moving Pictures
Both these tools produce a single, ordinary file—a repaired frame or a transparent PNG—and they intentionally stop there. The typical next step is to bring it to life: incorporating the repaired footage into highlight clips, or animating the background-extracted subject with keyframes. This is precisely what KinoViz Studio is designed for—a vector and 3D animation studio that runs in your browser, requiring no installation.
You don't need Studio to use these two tools; they function perfectly as standalone utilities. However, if your next step after watermark removal or background cutting is animation, that's the intended connection point between them and Studio.
Try Them Now
Both tools are ready to use instantly, with completely free previews. You only need to log in with a KinoViz account at the moment you wish to download the final product. You can start with Clean Up or 背景移除, or view the complete list at KinoViz 工具页.
