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Rain on Glass

User Guide

Rain on Glass overlays a “through rain-soaked window glass” effect on any photo you load. Adjust frosting, droplets, flowing drops and reflections, then save as an image or video. No signup, no install — your image is processed only on your device.

01

The basic flow

It takes three steps: choose an image → adjust → save. Until you pick an image, a sample is shown, so you can try the adjustments right away.

  1. Choose an image: load a photo from “Choose image” in the right panel.
  2. Adjust: move frosting, rain, drops, flow speed and more to taste.
  3. Save: export as a still image (JPG) or a video.
Rain on Glass full screen: rainy-window effect on the left, control panel on the right
Full screen (PC). Effect preview on the left, control panel on the right.
02

Load an image

Pick a photo from “Choose image” (JPG / PNG) at the top of the panel. The image is replaced in place and the effect is applied while keeping its resolution. Images are processed only on your device and are never sent anywhere.

03

Adjust

In “Adjust” you fine-tune the state of the glass and how the rain looks. Toggle buttons and sliders update the preview instantly.

Control panel: adjust toggles and sliders, frame, output
Control panel — from top: Image, Adjust, Frame, Output.
04

Frame

You can add a framing border for the finish. Choose from None / White mat / White mat + cross. Nice when you want it to look like a piece displayed by a window.

05

Save & record

From “Output”, export exactly what the preview shows.

06

On smartphones

On phones the image is shown full screen. The control panel is hidden off-screen and opens with the “MENU” tab on the right edge.

Smartphone full-screen view with the MENU tab on the right
Full-screen view. MENU tab on the right edge.
The MENU tab opened, showing the control panel
MENU open — the control panel slides in.
07

Notes

Loaded images are processed only on your device and are never sent to a server.
Saved images and videos go to your device’s download location.
08

Credits / Licenses

This app uses the following open-source software.