Does Fade Image to Black upload my file or text to Tool-You servers?

No. Fade Image to Black runs in this browser tab. Files stay on the device. Limit note: Images. Fixed 60% RGB scale. Output PNG. Max 20 MB.

Should I use Darken Image instead of Fade Image to Black?

Use Fade Image to Black when you need Scale RGB to 60%. Use Darken Image when you need Fixed 70% brightness, then PNG. They share a category (Images) but not the same job.

Fade Image to Black

Scale RGB to 60%.

Multiplies RGB by 0.6 (fade toward black). Unlike Darken Image this is a channel multiply, not CSS brightness(70%). Unlike Fade Image to White this goes to black, not white. Runs in the browser on a canvas.

What Fade Image to Black does

Fade Image to Black sits in the Images group on purpose. It is not Darken Image (Fixed 70% brightness, then PNG.) and not Fade Image to White (Mix 40% white into RGB.). Choose this page when you need Scale RGB to 60%. If you stretch Fade Image to Black into a neighbor’s job, the result will look wrong even though the site chrome looks the same.

How to use Fade Image to Black

Stay on this Fade Image to Black page (/fade-to-black-image). Do not switch to Darken Image unless you actually want Fixed 70% brightness, then PNG..
Add the file type Fade Image to Black accepts. Hint from the path: fade to black image. Scale RGB to 60%.
Set only the options that match Fade Image to Black. Neighbor Fade Image to White does something else (Mix 40% white into RGB.). Tool note: Multiplies RGB by 0.6 (fade toward black). Unlike Darken Image this is a channel multiply, not CSS brightness(70%). Unlike Fade Image to White this goes to black, not white. Runs in the browser on a canvas.
Run Fade Image to Black in this tab. Browser memory still applies: Images. Fixed 60% RGB scale. Output PNG. Max 20 MB.
Download or copy the result from Fade Image to Black. If it is the wrong job, open Darken Image instead.

When not to use Fade Image to Black

Skip Fade Image to Black when a neighbor tool matches better — start with Darken Image or Fade Image to White — or when the description already warns the job will fail. In the tool’s own words: Multiplies RGB by 0.6 (fade toward black). Unlike Darken Image this is a channel multiply, not CSS brightness(70%). Unlike Fade Image to White this goes to black, not white. Runs in the browser on a canvas.

Questions about Fade Image to Black

What does Fade Image to Black do that other Images pages on this site do not?: Multiplies RGB by 0.6 (fade toward black). Unlike Darken Image this is a channel multiply, not CSS brightness(70%). Unlike Fade Image to White this goes to black, not white. Runs in the browser on a canvas. Short version: Scale RGB to 60%.
Does Fade Image to Black upload my file or text to Tool-You servers?: No. Fade Image to Black runs in this browser tab. Files stay on the device. Limit note: Images. Fixed 60% RGB scale. Output PNG. Max 20 MB.
Should I use Darken Image instead of Fade Image to Black?: Use Fade Image to Black when you need Scale RGB to 60%. Use Darken Image when you need Fixed 70% brightness, then PNG. They share a category (Images) but not the same job.
What are the limits of Fade Image to Black?: Images. Fixed 60% RGB scale. Output PNG. Max 20 MB. Also: Multiplies RGB by 0.6 (fade toward black). Unlike Darken Image this is a channel multiply, not CSS brightness(70%). Unlike Fade Image to White this goes to black, not white. Runs in the browser on a canvas.