Help Center
Everything you need to get the most out of NSS Background Remover.
Getting Started3 articles
Core Tools6 articles
Using the brush tool
Erase and restore areas of your cutout with a precision brush with adjustable size, hardness, and opacity.
Edge refinement
Feather, smooth, expand, and decontaminate edges to get natural-looking cutouts.
Replacing the background
Add a solid colour, gradient, or image behind your cutout in the editor.
Exporting with transparency
How to export a PNG, WebP, or AVIF with true alpha channel transparency.
Using the Video Editor
Colour grade, apply filters, add text overlays, trim clips, and export — without requiring background removal.
Removing backgrounds from glass and transparent products
How to use Glass / plastic mode to preserve partial alpha through clear materials — for jewellery, drinkware, bottles, and packaging.
Troubleshooting4 articles
Why does my export show black in Photoshop?
The premultiplied alpha problem explained — and why NSS exports a real checkerboard instead.
Why does my image have a halo or colour fringe?
Light or dark fringing around your subject — causes and how to fix it.
Why are the edges jagged or pixelated?
Why edges look rough and how feathering and the brush tool smooth them out.
General troubleshooting
Common issues and solutions: slow inference, black exports, missing features, browser errors.
Features33 articles
Keyboard shortcuts
Complete reference of all keyboard shortcuts in the editor.
Working offline
How the app caches itself and the AI models so you can work without internet.
Installing as an app
Install NSS Background Remover on your desktop or home screen for quick access.
Image filters
Apply 22 cinematic presets — 4K, Cinematic, Portrait, Drama, Golden Hour, Moonlight, Film Grain, Duotone, and more — with intensity control, then export or open in the editor.
Video filters
Apply cinematic presets frame-by-frame to a video and export as WebM — or continue editing in the Video Editor.
Manual image adjustments
Fine-tune brightness, contrast, saturation, and colour temperature in the editor — composable with filter presets.
Video upscaler
Upscale videos 2× or 4× using a fast single-pass ffmpeg Lanczos scaler — fully in-browser, no upload required. Queue multiple files and retry any that fail.
Video stabilizer
Smooth out shaky handheld or action-camera footage with frame-by-frame motion estimation — no upload, no third-party software.
Video metadata remover
Strip GPS, creation date, and encoder info from video files — re-encodes via canvas so no original metadata survives.
ICO creator
Build a multi-resolution .ico file from any image — 16×16 through 256×256 sizes embedded in one favicon-ready file.
Image canvas extender
Add transparent or coloured padding to any side of an image to hit an aspect ratio without cropping the subject.
Image resizer
Resize images to exact dimensions or by percentage with high-quality Lanczos downsampling and aspect-ratio locking.
Image compressor
Re-encode images to WebP, AVIF, or JPEG to hit a target file size — preview the quality trade-off before downloading.
Format converter
Convert between PNG, WebP, AVIF, JPEG, BMP, and TIFF — batch-drop multiple files, no upload, no quality loss when going lossless-to-lossless.
PNG optimizer
Losslessly re-encode PNG files to strip metadata and pick the smallest DEFLATE pass — typically 15–40 % size reduction with no pixel change.
Color extractor
Extract a usable palette from any image — hex / RGB / HSL swatches sorted by visual dominance, plus a single-pixel eyedropper.
Compare formats
Encode the same image as PNG, WebP, AVIF, and JPEG side-by-side — pick the right format for size and quality.
Check transparency
Inspect any image’s alpha channel — see exactly which pixels are opaque, partial, or transparent before shipping a cutout.
Image metadata remover
Strip EXIF, GPS, and editing software fingerprints from photos before sharing — lossless, no upload.
Rotate & flip
Rotate images 90°, 180°, or by an arbitrary angle, and flip horizontally or vertically — lossless for 90° increments.
Grayscale
Convert images to black-and-white using perceptually-weighted luminance — preserves transparency, avoids muddy average-of-RGB results.
Color picker
Sample the exact colour at any pixel of an image — hex / RGB / HSL / alpha with a 10× magnifier for precision.
Add background
Place a transparent cutout on a solid colour, gradient, or custom image background — for JPEG-only destinations and presentation slides.
Video format converter
Convert between MP4 (H.264), WebM (VP9), and WebM (VP8) in your browser using WebCodecs — no upload, no third-party transcoder.
Video compressor
Reduce video file size with High / Medium / Low / Very Low quality presets via your browser's VP9 encoder — for upload limits and faster pages.
Video resizer
Resize a video to 4K, 1080p, 720p, 480p, or a custom resolution — aspect-ratio locked by default, entirely in-browser.
Video rotate
Fix sideways or upside-down videos with one click — bakes the rotation into the pixels, not just a metadata flag.
Video canvas extender
Add letterbox or pillarbox padding to change a video's aspect ratio without cropping — supports 1:1, 9:16, 16:9, 4:3, 21:9.
Video format comparison
Encode the same video as WebM VP9, WebM VP8, and MP4 H.264 side-by-side — pick the right format for size and quality.
Working with layers
Stack images, text, shapes, backgrounds, and 3D relief — each with their own opacity, blend mode, lock, and reorder. Drag-to-position, undo/redo, project round-trip.
3D preview & depth relief
Orbit the canvas in 3D, generate a depth-displaced bas-relief mesh, adjust lighting / material / background, record a 360° fly-through as WebM.
Collaborative sessions
Share a live editing session with a teammate over WebRTC — no media uploads, only operation descriptions stream peer-to-peer.
Custom tuning profiles
Upload 5–10 reference images of your product category — the analyzer derives a tuning profile that adjusts the cutout post-process for your subjects.