Remove Google's sparkle watermark from Gemini-generated images — auto-detects 48/96px marks and reverses alpha blending locally. Single images free; batch mode Pro-only.
Runs on CanvasJSZip
Content reviewed October 2026 · About Toolzum
Downscale a batch of images to one max width (default 1920px) with an optional bottom-right watermark, then download everything as a ZIP. Same max-width and watermark apply to every image — local Canvas work, 3 free images a day.
Strip all EXIF metadata from JPEG, PNG, and WebP photos by re-encoding each to JPEG at quality 0.95 (files renamed *-noexif.jpg). Strip-only — no inject mode exists. Agents clean 500 listing shots before upload — local canvas work, 2 free batches a day.
Convert PNG images to GIF in your browser — each PNG still encodes to a single-frame GIF locally via the bundled gif.js worker. Stills-only output flattens transparency to white, and downloads are unlimited since nothing is uploaded.
Turn text prompts into high-resolution images with three engines: free Pollinations drafts, 1-credit FLUX drafts, and 5-credit Gemini HD for Pro. Designers prototype hero art in seconds — free to start, sign in for credits.
Remove the known password from your own single PDF — owner restrictions and open passwords. Reclaim an archived file you own — local pdf.js and jsPDF work, unlimited saves.
Gemini AI stamps a small sparkle mark in the bottom-right corner. Images larger than 1024×1024 get the 96px alpha map with 64px margins, smaller ones the 48px map with 32px margins (assets load from /assets/gemini-alpha-48/96.png); each pixel inverts as original = (watermarked − alpha×255)/(1−alpha) with a 3/255 noise floor and 0.99 alpha cap. Position override and crop-box modes handle off-corner marks.
No — only Gemini's sparkle mark, whose exact blending is known. Stock-photo watermarks, logos, and text overlays need manual clone work; this tool refuses them rather than smudging.
Pro-only multi-file removal with queue controls and ZIP output. Single images stay free for everyone with no account and no credits.
No — detection and reversal run entirely in your browser. Nothing leaves your device; saves download with no quota.
Bulk Image Watermark
Stamp text or logo watermarks across dozens of photos with 5 positions and 10–100% opacity control. Photographers protect 200 wedding proofs before sharing — always exports PNG (<name>-watermarked.png) — local Canvas work, 2 free batches a day.
Object Remover
Brush over unwanted objects and erase them with 8-pass patch-fill reconstruction that averages the 4-neighbourhood around each masked pixel — tourists, signs, photobombers. Exports JPEG at quality 0.95 as erased-<name> — local Canvas work, unlimited saves.