Frequently Asked Questions

Erasio removes Gemini watermarks by reverse-calculating the alpha-compositing math that Google used to embed them, recovering the original pixels exactly. For images it patches the watermarked region directly; for video it rebuilds every frame and re-wraps the clip with the original audio. All processing happens locally in your browser — your files never leave your device.

Yes — Erasio removes the watermark from Gemini videos, including Google Omni clips and Omni Flash videos exported from Google Flow. Drop an MP4 into the online tool, or download directly with the Chrome extension, and Erasio strips the sparkle watermark from every frame. The result is a clean MP4 with the original audio preserved — no re-shooting and no editing suite required.

Yes — Erasio supports Google Flow videos and removes the Omni Flash watermark from clips generated at labs.google/fx/tools/flow. The Chrome extension activates on Google Flow in addition to Gemini and AI Studio, and removes the watermark from videos generated with Google's Omni Flash model as you download them. You can also drop an exported Flow MP4 into the online tool to clean it after the fact — Erasio detects the Omni Flash watermark pattern automatically and rebuilds every frame with the original audio kept intact.

No — Erasio keeps the original audio track and re-encodes at a high bitrate, so visual quality and audio are effectively unchanged. The processor re-renders the video frames to remove the watermark while copying the audio stream across verbatim. The only thing that changes is that the visible watermark is gone.

Yes — Erasio is fully client-side and never sends your images or videos to any server. The Chrome extension only requires permissions to operate on gemini.google.com, aistudio.google.com, and labs.google/fx/tools/flow. It does not access other websites, read your browsing data, or transmit any information.

Yes — Erasio supports every Gemini, Google AI Studio, and Google Flow image or video that carries the standard sparkle, Nano Banana, or Omni Flash watermark pattern. v1, v2, and every variant in between are all covered. Files without a watermark are passed through unchanged.

The Nano Banana watermark is the compact, lower-alpha variant of the Gemini sparkle mark, embedded in outputs from lightweight Gemini model tiers. It is typically a smaller, lower-alpha overlay compared to the standard mark. Erasio detects and removes it with the same precision as every other supported variant.

The Chrome Extension cleans Gemini downloads automatically at the browser level, while the Online Tool is a standalone page for uploading images or MP4s by hand. Both share the same in-browser reverse alpha-blending engine, so output quality is identical — the only difference is whether removal happens at download time or after the fact.

Erasio's Online Tool works on any modern mobile browser, but the Chrome Extension is desktop-only. You can clean images and videos from your phone or tablet through the web tool (video processing is fastest on desktop where WebCodecs APIs are most performant).

Yes — Erasio ships a matching update whenever Google changes a Gemini, Nano Banana, or Omni Flash watermark pattern. We actively monitor changes to Gemini's watermark patterns across every variant. All updates are included at no extra cost.

No — Erasio is a local media processing tool that operates on files after they are downloaded, with no unauthorized interaction with Google's servers. It processes images and videos after download. Users are responsible for ensuring their use of generated content complies with applicable terms.

Reverse alpha blending is the arithmetic that undoes a composited watermark. When Google stamps the sparkle, it replaces each affected pixel with a weighted mix of the original pixel and the logo colour at a known opacity. That operation is invertible: given the blended pixel, the logo colour and the alpha value, the original pixel is recoverable exactly. Erasio solves that equation per pixel rather than guessing at replacement content.

Inpainting deletes the watermarked region and asks a generative model to invent plausible pixels to fill the gap. It has no knowledge of what was actually there, so it produces halos at the boundary and smears any texture, edge or text that ran beneath the mark. Erasio replaces nothing — it recovers the pixels that were always present, so there is no boundary artefact to hide.

No. Erasio removes only the visible sparkle logo. SynthID is a separate, invisible provenance signal that Google distributes across the entire pixel grid, and it survives re-encoding untouched. A file cleaned with Erasio still carries SynthID and still identifies as AI-generated to any tool that reads for it. This boundary is deliberate.

Because removal is arithmetic, not repair. A screenshot, a re-compressed copy or an image that has passed through another editor no longer carries the exact blended pixel values Erasio inverts, so the equation no longer resolves cleanly. Always work from the file Gemini or Flow gave you.

Lossless PNG. The recovered pixels are exact, and exporting to a lossy format would discard that precision immediately. Everything outside the watermark region is untouched, so the rest of the image is bit-identical to the file Gemini produced.

No. Source width, height and frame rate pass straight through to the encoder — there is no downscaling anywhere in the pipeline. The output bitrate is derived from your source clip with headroom rather than a fixed formula, so a crisp high-bitrate input produces a crisp output instead of being squeezed to a default.

Roughly real time to several times faster on a modern desktop, so a 10-second clip usually finishes in a few seconds. Every frame is decoded, patched and re-encoded on your own machine, which means speed scales with your hardware and with clip length and resolution — not with our servers.

The online tool accepts images up to 50 MB and MP4 video up to 100 MB, which covers nearly every Gemini and Flow export. The Chrome extension works at download time and is not bound by that ceiling, so use it for unusually long or high-bitrate clips.

Update the extension first — pattern calibration ships inside it, and Google revises the watermark periodically, so an outdated version will not recognise the current mark. That resolves most reports. If a faint outline remains, adjust the mask scale and offset in the side panel; the image and video settings guides explain which control to move. For Veo or Omni Sparkle video, try the dedicated Veo & Omni model, which auto-tunes instead of using your saved settings.

It did not — you re-downloaded the original. Erasio changes nothing on Google's side, so the copy in your Gemini or Flow history still carries its watermark. The clean version is the file already saved on your device.

Almost always a long clip on a constrained machine, since every frame is decoded and re-encoded locally. Close other heavy tabs and retry, or use the Chrome extension, which processes at download time. Confirm you are on a Chromium browser too — video removal needs WebCodecs, which Safari and Firefox do not yet provide.

Erasio only activates on gemini.google.com, aistudio.google.com and labs.google/fx/tools/flow. If you are on one of those and the icon stays inactive, reload the tab — the content script attaches on page load. Failing that, check the extension is enabled at chrome://extensions and that Erasio is turned on in the side panel settings.

No. The extension works signed out, and the online tool processes files for guests. An account — free — raises your daily cap and unlocks batch processing of up to 10 images at once. Removal quality is identical either way.

One credit is charged per file processed. Guests get a small daily allowance, signed-in accounts get a larger one, and lifetime plans carry a balance that does not reset daily. The backend records only a timestamp, an identifier and a count — never what you processed, what the file was, or any media content.

Media you generated yourself and have the right to use — client deliverables, ad creatives that platforms reject for carrying visible watermarks, product mockups, portfolio pieces, previz reels. The visible sparkle interferes with legitimate use of your own output, and that is the problem Erasio solves.

No. The engine is calibrated to Google's specific alpha-composited patterns and does nothing at all with anything else. It is not a general-purpose watermark remover, and it will not strip attribution from stock imagery, photographers' work or other creators' content.

Yes. Erasio is a local media-processing tool; what you do with the output is your decision and your responsibility. You need the rights to the content you process, and your use must comply with Google's terms, copyright law, and the disclosure and upload policies of wherever you publish. Removing the visible mark does not remove those obligations — nor does it remove SynthID, so AI-generated media remains detectable as such.