Nexa
0 processed

Convert stuff,
keep it private

No accounts, no waiting on a server, nothing gets uploaded anywhere. Drop a file in — everything happens right here in your browser.

Format conversion

Turn images into a different format

Drop images here, or tap to choose
Handles HEIC iPhone photos too. Runs entirely on your device.
Convert to
Subject extraction

Cut a subject out of its background

Drop a photo, or tap to choose
One image at a time. A real ML model, running locally.
First use downloads U2-Net, the same model behind the popular rembg tool (~176MB) — after that your browser caches it, so it runs fully offline.
Content-aware fill

Paint a mark off a photo

Drop a photo, or tap to choose
Then brush over the mark and run the fill.
AI model (LaMa): a real, free, open-source inpainting neural network. First use downloads about 200MB and takes a bit to load, then reconstructs the marked area using learned texture and structure — noticeably better on complex photos than a classical fill. Fast mode skips the download and runs an instant diffusion fill in its place — good for skies, solid colors, and simple patterns, weaker on complex detail. Either way, you brush over the mark yourself first — reliably auto-detecting an arbitrary watermark's exact shape isn't something this tool guesses at, since a wrong guess could erase part of your actual photo.
Audio conversion

Convert an audio file

Drop an audio or video file, or tap to choose
Pulls the audio track out of a video too. All done on your device.
Convert to
WAV is fully lossless and always exact. Browsers don't ship a licensed MP3 encoder, so "MP3" isn't offered here — that would mean silently handing back a mislabeled file, which this tool won't do.
Video conversion

Convert a video file

Drop a video file, or tap to choose
For footage already saved on your device. Nothing leaves your device.
Video is heavier to process than images or audio — larger files can take a minute or two. That's real encoding work happening, not the page hanging. Keep the tab open until it finishes.
This converts video files already on your device. It can't pull video from YouTube, TikTok, or any other site — that's outside what this tool does, not a missing feature.