Adobe Photoshop is the standard tool for photo editing and digital design, tested in interviews for graphic designers, photo editors and social media designers. These Photoshop interview questions cover layers, selections and file formats for freshers, then masks, smart objects, retouching, compositing and workflow for experienced designers.
30 questions · Updated
Fundamentals, definitions and simple scenarios. Good for freshers and warm-ups.
Photoshop is a raster image editor used for photo editing and retouching, compositing several images, creating social media posts, banners and web graphics, digital painting, and mock-ups. For logos and scalable illustrations a vector tool like Illustrator is better, and for multi-page layouts InDesign is better.
PSD is Photoshop's working file that keeps layers, masks and effects.
JPEG is compressed and lossy with no transparency, good for photos on the web.
PNG is lossless and supports transparency, good for graphics, logos and screenshots.
TIFF is high-quality and lossless, often used for print and archiving.
WebP is a modern web format with smaller files.
Resolution is the number of pixels per inch (PPI, often called DPI) when an image is printed.
Print work needs about 300 PPI at the final size, while screen work is judged by pixel dimensions, such as 1080 x 1080 for an Instagram post.
Increasing resolution in Photoshop does not add real detail, so you need a high-resolution source for print.
The Move tool, Marquee and Lasso selections, Object Selection and Quick Selection, Crop, Brush and Eraser, Clone Stamp, Spot Healing and Healing Brush, Pen tool for precise paths, Type tool, Gradient and Paint Bucket, Dodge and Burn, and the Hand and Zoom tools. Knowing their shortcuts (V, M, L, W, C, B, E, S, J, P, T, G, O) speeds up work.
Layers stack elements independently, so each can be moved, edited, hidden or adjusted without affecting others, with opacity, fill and blending options. Layer styles add non-destructive effects such as drop shadow, stroke, outer glow, bevel, colour overlay and gradient overlay, which can be edited, copied to other layers and saved as styles.
Quick options are Remove Background in the Properties panel or Select Subject, which use AI to detect the main subject, followed by a layer mask.
For better edges I refine with Select and Mask, especially for hair, or use the Pen tool for products with hard edges.
Keeping the result as a mask rather than deleting pixels allows later corrections.
Image Size changes the dimensions and resolution of the whole image, resampling pixels (enlarging loses quality).
Canvas Size changes the working area around the image without scaling it, adding or cropping space at the edges.
The Crop tool trims and can straighten an image, and with Content-Aware enabled it fills empty corners created by straightening.
RGB for screens and most editing, CMYK for commercial print, Grayscale for black and white, Lab for advanced colour corrections, Indexed colour for limited-palette formats such as GIF, and Bitmap for one-bit images. Many filters only work in RGB, so I usually edit in RGB and convert to CMYK with the printer's profile at the end for print work.
Blending modes control how a layer combines with the layers below it. Multiply darkens and is used for shadows and removing white backgrounds, Screen lightens and is used for light effects, Overlay and Soft Light add contrast for textures and dodge and burn layers, Colour changes hue and saturation while keeping brightness, and Luminosity does the opposite.
Ctrl/Cmd+J to duplicate a layer, Ctrl/Cmd+T for free transform, Ctrl/Cmd+G to group layers, Ctrl/Cmd+Shift+N for a new layer, holding Alt/Option to sample with healing tools, [ and ] to resize brushes, X to swap colours, D for default colours, Ctrl/Cmd+Alt+Z for step backward, Space to pan, and Ctrl/Cmd+Shift+Alt+E to stamp visible layers.
File > Export > Export As (or Quick Export) saves layers or artboards as PNG, JPG, GIF or WebP with chosen size and quality, and can export several sizes at once. I resize to the display size, choose JPG or WebP for photos and PNG or SVG for graphics with transparency, convert to sRGB, remove unnecessary metadata, and keep files small for fast loading.
Applied problems, trade-offs and questions about your own projects.
Erasing permanently deletes pixels.
A layer mask hides parts of a layer non-destructively: painting black hides and white reveals, and grey gives partial transparency, so it can always be changed.
A clipping mask uses the shape and transparency of the layer below to limit what is visible in the layer above, for example placing a photo inside text.
A smart object is a container that keeps the original image or vector data inside a layer.
You can scale, rotate and warp it repeatedly without losing quality, apply smart filters that can be edited or removed later, and update linked smart objects in several files at once.
They are essential for non-destructive editing and mock-ups.
Select Subject and the Object Selection tool use AI to select people and objects quickly.
The Quick Selection tool and Magic Wand select by colour and edges.
The Pen tool gives precise paths for product cut-outs with hard edges.
For hair and fur I use Select and Mask with the Refine Edge brush.
I often combine tools and finish the selection as a layer mask.
Adjustment layers apply colour and tone changes without altering the original pixels, and can be edited or masked later.
I use Levels and Curves for brightness and contrast, Hue/Saturation and Selective Color for colours, Color Balance for tint, Black & White for monochrome, and Gradient Map for colour grading.
Clipping an adjustment to one layer affects only that layer.
Content-Aware Fill removes unwanted objects by filling a selection with pixels sampled from surrounding areas so it blends in, such as removing a person from a beach photo.
The dedicated workspace lets you control which areas are used as the sample, preview the result and output to a new layer for non-destructive editing.
It works best on natural textures.
Generative Fill, powered by Adobe Firefly, adds, removes or replaces content in a selection from a text prompt, creating a new generative layer with several variations.
Generative Expand extends the canvas and fills new areas to match the image, such as turning a portrait photo into a landscape banner.
Results need checking for realism, and some use requires generative credits.
Camera Raw provides powerful, non-destructive photo adjustments: white balance, exposure, contrast, highlights, shadows, texture, clarity, dehaze, curves, colour mixing (HSL), colour grading, detail and noise reduction, lens corrections, AI masks for subject, sky and people, and presets. Applied to a smart object, it remains editable as a smart filter.
Channels store the colour information of an image, with one grayscale channel per colour (red, green and blue in RGB), and alpha channels store saved selections as grayscale masks. Because one colour channel often has the highest contrast between subject and background, channels are used to make detailed selections of hair, trees and smoke.
Levels adjusts the black point, white point and midtones using a histogram, which is quick for fixing contrast and brightness.
Curves gives finer control by letting you place points anywhere along the tonal range, such as creating an S-curve for contrast or adjusting individual colour channels to correct colour casts.
Both are used as adjustment layers.
Dodging lightens areas and burning darkens them, used to shape light, add depth, guide the viewer's eye and smooth skin non-destructively. Professionals usually do it on a separate layer set to Overlay or Soft Light filled with 50% grey, or with curves adjustment layers and masks, painting with low-opacity brushes rather than using the destructive Dodge and Burn tools on the original pixels.
Place the design inside a smart object positioned on a photo of the product, such as a T-shirt, mug or phone screen, using perspective or warp transforms to fit the surface.
Blending modes and a displacement map make the design follow fabric folds and texture, and shadows and highlights are added on top.
Editing the smart object updates the mock-up with new designs.
System design, deep internals, leadership and tough follow-ups.
I work non-destructively on separate layers: remove blemishes with the Spot Healing Brush and Clone Stamp, even skin texture with frequency separation or dodge and burn, rather than heavy blur so the skin keeps its texture. I brighten eyes subtly, refine hair, correct colour with adjustment layers, and keep the result natural and true to the person.
I choose images with matching perspective, lens and lighting direction, cut out subjects with careful masks, and then match them: colour and tone with Curves clipped to each layer, light direction and intensity with dodge and burn, and realistic contact shadows and reflections. I add consistent grain, blur or depth of field and a final colour grade over everything so it looks like one photo.
I name and group layers, use colour labels, keep edits non-destructive with smart objects and adjustment layers, and use artboards for multiple sizes.
I record actions and batch-process repetitive tasks such as resizing, use Libraries for shared brand assets, and use Generative Fill for quick extensions and cleanups where appropriate.
I save versions and package linked files before handing over.
Calibrate the monitor with a hardware calibrator, set colour settings with working spaces such as sRGB for web and Adobe RGB for print photography, keep embedded profiles, convert to the printer's CMYK profile when needed, and use soft proofing (View > Proof Setup) to preview how colours will print and check out-of-gamut warnings before sending files to print.
Lightroom is designed for organising and editing large numbers of photos quickly with global and masked adjustments, presets and syncing, which suits photographers processing shoots.
Photoshop is for pixel-level work: compositing several images, detailed retouching, removing objects, adding text and graphics, and creating designs.
A common workflow is to edit in Lightroom and send selected images to Photoshop.
Start with Select Subject, then open Select and Mask, use the Refine Hair button and the Refine Edge Brush along the hairline, adjust edge detection radius and decontaminate colours to remove background colour fringes. For difficult cases, duplicate the highest-contrast channel, increase contrast with Levels or Curves, paint to clean it up and load it as a selection.
Organise and name layers and groups, use artboards for each screen or size, keep text as editable type layers with consistent styles, use smart objects for placed assets, and export assets at the needed sizes and densities (1x and 2x) with Export As. For UI work, Figma is usually better for handoff; for print, package linked files and fonts.
Only use images, fonts and brushes you have the right to use commercially, such as licensed stock or your own photos, and keep records.
Adobe Firefly is trained on licensed and public domain content and designed to be commercially safe, and Content Credentials can show that AI was used.
Client policies and disclosure rules for AI-generated content must also be followed.
See all Graphic Designer interview questions, covering Photoshop, Illustrator, Canva, Figma, CorelDRAW and more.