How to Remove Red Eye From a Photo: iPhone, Android, Photoshop and Online

Bright red pupils in a birthday photo, a toddler with glowing eyes in a family shot, a strange yellow-green flash in the cat sitting on the couch: these are all versions of the same optical quirk, and every one of them is fixable in a few taps. The trick is understanding what actually happened at the moment of capture, because that decides which tool you should reach for first.

This guide walks through every practical method, in order from fastest to most precise: the built-in eye correction on iPhone and Android, the one-click and manual routes in Photoshop, and free browser-based editors that need no installation at all. There is a separate section on why the standard red-eye tool completely ignores the green or gold eye-shine in dogs and cats, and what to do about it instead. The material is arranged from quick smartphone fixes toward slower, more controlled retouching, so you can stop reading as soon as you find the method that fits your photo.

If you are prepping an image for something more public than a family album, a listing photo on Etsy, a headshot for a website, a print for a frame, keep one thing in mind: a red pupil instantly signals an amateur snapshot and quietly undercuts how trustworthy the picture looks. The correction itself rarely takes more than a minute, yet it changes how the whole photo reads. Below you will find real, numbered steps for the Photos app on iPhone, Google Photos and manufacturer galleries on Android, the Red Eye Tool and manual desaturate-and-darken method in Photoshop, free online editors, and the physics of preventing the effect before you ever press the shutter.

Red eye is a bright red glow in the pupils of a photo shot with flash. It has nothing to do with tiredness or irritation; it is a purely optical event. When a flash fires in a dark or dim room, the pupil is wide open to let in as much light as possible. The flash pulse enters the eye, bounces off the retina and the blood-rich choroid layer at the back of the eyeball, and travels straight back out through the lens. Because the retina is packed with blood vessels, the reflected light comes back tinted red.

The angle between the flash and the lens is the deciding factor. The closer the flash sits to the optical axis of the lens, the more likely the reflected beam is to land directly back in the camera. That is exactly why phones and compact cameras with a built-in flash suffer from this far more than a DSLR with an external flash mounted well above the lens. On a phone the flash sits barely half an inch from the camera, and at close range that tiny offset is nowhere near enough to send the reflection somewhere else.

What makes red eye worse

The effect is not consistent from photo to photo. A handful of conditions push it from barely visible to glaring:

• A dark room. The darker the surroundings, the wider the pupil opens and the more retina is exposed to reflect light back. Parties, dim restaurants, and evening shots at home are the worst offenders.
• Light-colored eyes. People with blue, gray, or green eyes have less melanin to absorb the reflection, so the glow reads brighter than it does in brown eyes.
• Shooting up close. A flash selfie or a portrait taken at arm's length almost guarantees red eye, because the angle between flash and pupil is at its smallest.
• A direct gaze into the lens. When someone looks straight at the camera, the reflected beam bounces right back along the same path it came in on.
• Age. Children's pupils dilate faster and wider, which is why flash photos of kids show this effect more often than adult portraits.

It is worth separating two different defects that get lumped together. Red eye is a red pupil, the dark center of the eye lit up by the flash. Bloodshot eyes are a different problem entirely, caused by dilated blood vessels in the white of the eye (the sclera) from fatigue, allergies, or a rough night, and they are fixed differently: select the white of the eye, pull down the red channel's saturation, and nudge brightness up slightly so the white reads clean again. This guide focuses on the pupil, though the desaturation technique below applies just as well to bloodshot whites.

Modern phones still produce red eye because the LED flash sits right next to the lens, and software correction at capture time only works some of the time, especially in near-total darkness, at an angle, or with several faces in frame. That is why knowing how to fix it manually is still a useful skill.

Removing red eye on iPhone

iPhone has a red-eye tool built directly into the Photos app, no download required. It only appears when iOS detects a face with the defect, so if the icon is missing, skip to the manual workaround below.

1. Open the Photos app and select the picture.
2. Tap Edit in the top right corner.
3. Tap the crossed-out eye icon near the top of the editing tools.
4. Pinch to zoom in so you can aim precisely.
5. Tap each red pupil in turn. iPhone finds the edge of the pupil automatically and darkens it.
6. Once both eyes look neutral and dark, tap Done.

The edit is fully reversible. Open the photo, tap Edit, then Revert, and the original comes back exactly as it was, even months later, because iPhone keeps the source image alongside every edit history.

If the red-eye icon does not show up

This usually happens when the system fails to recognize the eye as red, often because the face is small in the frame, turned to the side, or an unusual color. In that case, use the Markup pen instead:

• In Edit mode, open Markup (the pen-tip icon, sometimes tucked under the three-dot menu).
• Pick the pen tool and use the eyedropper to sample a dark gray or near-black tone from elsewhere in the same pupil.
• Shrink the line width and carefully paint over the red area without spilling onto the iris.

This is a cruder fix than the automatic tool, but it works when nothing else is available. For finer control, use an online editor or Photoshop, both covered further down. iPad with an Apple Pencil is also worth mentioning here: the same Markup workflow becomes far more accurate with a stylus, since it gives pressure control down to a pixel or two, which is a real advantage on a group photo where several people have red eye at once.

Removing red eye on Android

Android has more possible paths because the hardware and software vary by manufacturer: some phones rely on Google Photos, others ship with a manufacturer gallery app that has its own editor.

1. Open the photo in Google Photos.
2. Tap Edit (the sliders icon at the bottom).
3. Go to Tools or the retouch section.
4. If there is a dedicated Red eye option, select it and tap the pupil.
5. If there is no dedicated option, use the spot-fix brush with a dark color instead.
6. Tap Save a copy so the original file stays untouched.

Manufacturer galleries follow a similar logic under different menu names: Samsung tucks eye correction inside its face-retouch tools, Xiaomi lists it under Retouch or Beauty, and most other brands use a Retouch, Face, or eye-icon label somewhere in the editor. If no automatic tool exists, use a brush with a dark gray (not pure black) color, zoom in tight, and paint over the red area at roughly 80 percent opacity for a softer result. A quick practical note: some manufacturer galleries overwrite the original file by default instead of saving a copy, so duplicate the photo first if the original matters.

Photoshop gives the most precise result, especially on tricky photos where a catchlight partially overlaps the red pupil or the red bleeds into the iris. There is a one-click tool for straightforward cases and a manual method for everything else.

Method 1: the Red Eye Tool

This is the fastest route and works in most versions of Photoshop.

1. Open the photo in Photoshop.
2. In the toolbar, find the Spot Healing Brush group and press and hold to expand it. Choose the Red Eye Tool. The keyboard shortcut J cycles through this group.
3. In the options bar at the top, set Pupil Size and Darken Amount. Start at 50 percent for both.
4. Zoom in with Ctrl and plus (Cmd and plus on Mac).
5. Click directly on the red pupil, or drag a small box around it. Photoshop detects the red tone and swaps it for a neutral dark color.
6. Repeat for the second eye.

If the pupil ends up too dark, undo with Ctrl+Z, lower Darken Amount to 25 to 35 percent, and try again. If the tool grabs nearby reddish skin at the corner of the eye, zoom in further and click precisely on the pupil center rather than the whole eye area.

Method 2: the manual desaturate and darken technique

When the automatic tool smears or grabs the wrong pixels, which happens often with animal photos or a strong catchlight sitting over the red, fix it manually. This method is slower but gives full control.

1. Grab the Elliptical Marquee or Lasso tool and trace the red part of the pupil. Hold Shift to select both eyes at once.
2. Soften the selection edge with Select, Modify, Feather, at 1 to 2 pixels, so the transition is not hard-edged.
3. Add a Hue/Saturation adjustment layer. The active selection automatically becomes the layer mask.
4. In the channel dropdown, switch to Reds.
5. Pull Saturation down to minimum and drag Lightness to the left until the pupil reads dark.

This approach leaves the rest of the image untouched and returns the pupil to a natural dark tone without turning it into a flat black hole. If you want, paint a small catchlight back in on a new layer with a soft white brush, roughly one-tenth the diameter of the pupil, positioned on the same side as the catchlights elsewhere in the frame so the eyes still look alive.

An easy way to remember the manual steps

The Hue/Saturation method sounds long, but it boils down to three moves: select, desaturate, darken. The selection defines what you are correcting, desaturation removes the red, and darkening restores natural depth. Because it lives on an adjustment layer, every one of those steps stays editable later without redoing the whole thing. If the result looks flat, nudging Lightness back up slightly or dropping the layer opacity by 10 to 15 percent usually solves it.

Method 3: cloning a healthy pupil

In the worst cases, where the red has completely blown out the pupil detail, the Clone Stamp tool helps. Alt-click a healthy dark pupil from the other eye as your source and carefully stamp it onto the damaged one. If both eyes are affected, any neutral dark area can serve as a starting point and be refined with a brush afterward. It takes patience, but it saves shots that would otherwise be unusable.

Method 4: a blend-mode layer for light to moderate red eye

For milder cases, add a new empty layer, set its blend mode to Color or Saturation, take a soft neutral gray brush, and paint over the pupil. Color mode replaces hue without touching brightness or texture, so the pupil's fine detail survives while the red disappears. Because everything sits on its own layer, you can dial back the effect later with opacity if it looks too strong.

Keeping the sparkle after darkening

The most common beginner mistake in Photoshop is turning the pupil into a flat black disc. A living eye almost always carries a tiny bright catchlight from whatever light source was in the room. If that highlight disappears during correction, restore it manually: new layer, a small hard white brush, one dot placed near the top of the pupil. Match its position to the catchlights visible in the rest of the photo, and drop the dot's opacity to 70 or 80 percent so it reads as natural rather than pasted on. That single detail is what separates a rough fix from a clean one.

Common Photoshop mistakes

• Pupil Size set too large. The Red Eye Tool darkens more than the pupil and bleeds into the iris. Reduce the value.
• Editing directly on a flattened layer. There is no way back. Always duplicate the layer or use adjustment layers before you start.
• A hard selection edge. A visible ring shows around the pupil. Feather by 1 to 2 pixels.
• Desaturating without darkening. The pupil turns gray instead of dark. Pull down both saturation and lightness.

Why pet eyes need a completely different fix

Cats, dogs, and most animals with strong night vision have a reflective layer behind the retina called the tapetum lucidum. It works like a mirror to boost low-light vision, and it is the reason a pet's eyes glow bright green, gold, turquoise, or white under flash instead of red. The shade varies by breed and even by individual animal, so there is no single automated filter that covers every case. Every automatic red-eye tool, on a phone or in software, is built to detect red specifically, which means it simply ignores green or gold eye-shine and leaves it untouched.

The fix is the same manual Hue/Saturation approach described above, just aimed at a different color channel. Select the glowing part of the eye, feather the edge, add a Hue/Saturation adjustment layer, and this time switch the channel to Greens (or Yellows, if that is the dominant tone), then pull saturation down and lightness down until the glow reads dark. If a colored halo remains around the edge, repeat on the Cyans or Yellows channel until it is gone. Almost always finish with a small white catchlight on its own layer, since a fully darkened animal eye without a highlight looks lifeless. In the toughest cases, where the glow has blown out all the detail in the pupil, cloning a healthy pupil from the other eye or painting one in by hand works better than any adjustment layer.

When installing software is not an option, or you are working from someone else's computer, red eye can be fixed straight in a browser. It is a convenient route for a one-off correction on one or two photos.

The general workflow in a browser editor

1. Open a free online photo editor in your browser, on desktop or mobile.
2. Upload the photo using the file picker or by dragging it into the window.
3. Find the eye correction or retouch tool, usually marked with an eye icon.
4. Zoom in on the face and click the red pupil.
5. If there is an intensity slider, adjust it until the result looks natural.
6. Download the finished file to your device.

Sites like Pixlr and Fotor, among others, run this kind of eye correction entirely in the browser tab, with no software to install. gdefoto also keeps a free set of browser-based photo tools on its own site that need no signup, useful when you just need to fix a picture quickly: gdefoto's online photo tools.

Step by step: fixing red eye in a browser on desktop

1. Open the editor and wait for the page to load fully.
2. Click the upload button or drag the photo into the window.
3. Zoom in with the scroll wheel or a zoom slider until the pupil takes up a visible chunk of the screen.
4. Select the eye correction or retouch tool.
5. Click precisely on the center of the red pupil. If there is a strength slider, start in the middle and fine-tune from there.
6. Repeat on the second eye; it is easy to fix one and forget the other.
7. Download the result at the highest available JPEG quality, or a lossless format if one is offered.

Free desktop software

For anyone who edits photos often and wants a full editor without paying for one, free desktop programs cover the same ground as Photoshop: either a dedicated red-eye tool or manual desaturation of a selected area. The manual routine works in essentially any layer-based editor:

1. Select the red pupil with an oval selection.
2. Feather the edge by 1 to 2 pixels.
3. Open a Hue/Saturation style adjustment.
4. Drop saturation and lightness on the red channel.
5. Flatten and save.

Online versus desktop: which one to reach for

• Online editor: a one-off fix, someone else's computer, a phone with a weak built-in gallery, or you need it done fast.
• Desktop software: a batch of photos, a group shot with several affected faces, or you need precision and layer control.

What to keep in mind when uploading a photo

Upload the original file at full resolution, not a compressed screenshot; on a low-resolution image, the tool has a much harder time landing on the pupil accurately. After correcting it, save a copy and keep the untouched original somewhere safe in case you want another attempt later.

Privacy: where the photo goes during an online fix

If the photo includes children, personal documents, or anything sensitive, pay attention to how the tool handles the file. Some editors process the image entirely in the browser without ever sending it to a server, while others upload it to the cloud for processing. A tool that works instantly and continues to function without an internet connection after the page loads is usually processing locally. For sensitive photos, the built-in tools on your phone or an offline program are the safer choice, since the image never leaves the device.

Preventing red eye before you press the shutter

The most reliable fix for red eye is never producing it in the first place. The effect only shows up under specific conditions, and each one is easy to avoid.

• Turn on red-eye reduction. Almost every camera and phone has a pre-flash mode: a quick burst of light fires before the main flash. The bright light makes the pupil contract, so there is almost no red reflection left to capture. On a phone, this setting usually lives inside the flash options.
• Add more light to the room. Red eye is worst in the dark, because the pupil sits wide open. Turn on overhead lights, switch on lamps, open the curtains. In brighter light the pupil narrows on its own, and the flash either becomes unnecessary or produces only a faint reflection.
• Ask people not to stare directly into the lens. If the gaze is angled slightly away from the camera, the light bouncing off the retina misses the lens entirely. A small head turn or a glance at a point beside the camera is enough.
• Move the flash off the lens axis. On a DSLR or mirrorless camera, use an external flash raised above the body, or bounce it off the ceiling. The wider the angle between flash and lens, the lower the odds of red eye. On a phone, stepping back and using zoom instead of shooting up close helps the same way.
• Bounce the light instead of firing it straight on. Aim the flash at a light-colored ceiling or wall rather than the subject's face. The light comes back softer and from a much wider angle relative to the lens, which nearly eliminates red eye. As a bonus, harsh shadows and blown-out highlights disappear too, and the portrait looks more natural overall.

Shooting kids and group photos

Red eye shows up especially often at kids' birthday parties: dim lighting, a direct flash, and children staring straight at the camera with wide-open pupils. A few practical habits help:

• Shoot near a window during the day so natural light narrows the pupils and the flash becomes unnecessary.
• On a group photo, ask everyone to look slightly above or beside the camera, at a raised hand, for example, so the reflected beam misses the lens for the whole group at once.
• Take two or three bursts of frames. If someone still has red eye in one shot, pick the take without it, which is faster than any retouching.
• Give kids a moment to adjust to bright light by turning up the room lighting a minute before shooting, so pupils have time to contract.