Everything in the workspace.

Shrinker Studio is a batch image editor for the Mac built around one idea: see the result before you export it. Here is every tool, by the names the app uses.

See it working.

Real captures of Shrinker Studio. Every size, saving and quality number on screen is what the app produced for these photos.

Shrinker Studio window with a recipe of width, adjust, look, border, watermark, rename and metadata steps applied to a camera photo, 2.7 MB down to 128 KB — One recipe for the whole batch: resize, adjust, look, border, watermark, rename and strip metadata. This photo went from 2.7 MB to 128 KB.

Split view comparing the original portrait with the WebP result, 877 KB down to 143 KB — Split: drag the divider across the original and the result. Looks the same chose quality 93 here, for 84% smaller.

Side by side view of raspberries, original and result — Side by side: both versions pan and zoom together.

Difference view showing a heat map of where the compressed kitchen photo differs from the original — Difference: a heat map of exactly where compression changed pixels.

Formats view showing the same photo as JPEG, WebP, AVIF and JPEG XL with their file sizes and the smallest marked — Formats: JPEG, WebP, AVIF and JPEG XL at once, with the smallest marked.

Format and quality popover set to WebP and Looks the same, showing the quality found for this photo — Looks the same finds the lowest quality that still looks identical, for each photo.

Looks tab showing a Stockholm photo in every look, grouped by family — All 18 looks, side by side on your own photo. Every one is included.

Look popover with search, favourites and an intensity slider — Look: search, favourites and intensity, applied to the batch or one photo.

Add step gallery listing every recipe step with an icon and a description — Add step: every tool, grouped as Shape, Look, Mark and File.

Adjust popover with sliders for exposure, colour, tone, sharpening and vignette — Adjust: exposure, colour, tone, sharpen and vignette.

Watermark popover with a text mark using the year, size and opacity controls — Watermark: text or image, up to five marks, placed by hand if you like.

Border popover with solid, rounded and shadow styles — Border: solid, rounded or shadow.

A photo of an order card with its QR code and email address covered automatically — Redact finds QR codes, barcodes, email addresses and text, and covers them.

Redact popover showing two items found on this photo — Choose what Redact looks for, or cover areas by hand.

How a batch works.

Drop in one photo or hundreds. They share one recipe: a line of steps across the top of the window, such as Format, Resize & crop, Look, Watermark, Rename and Save to. Prefer a column? Move the recipe to a sidebar on the right in Settings.

Any photo can override any step. Give the portrait its own crop, the screenshot a reduced palette, the hero image a higher quality, and leave the rest of the batch alone.

Save the recipe and use it again next time. Nothing is written to disk until you press Export.

Shrinker Studio window with the recipe in a sidebar on the right, one row per step from Format and quality to Save to, applied to a camera photo — Or put the recipe in a sidebar on the right, one row per step: Settings ▸ Studio ▸ Recipe placement.

All the tools.

Compare

Split: Drag a divider across the Original and the After to check every edge and gradient.
Side by side: The two versions next to each other, panning and zooming together from 10% to 1600%.
Difference: A heat map of exactly where the compressed image differs from the original.
Formats: The same photo as JPEG, WebP, AVIF and JPEG XL at once, with the smallest one marked.
An honest After: The After pane shows the exact bytes Export will write, not an estimate.

Format & quality

Looks the same: Finds the lowest quality that still looks identical to the original, measured with the ssimulacra2 perceptual metric.
Fit under: Type a size in KB. Studio finds the highest quality that fits, and offers to resize when even the lowest quality is too big.
Manual: Set the quality yourself, as precisely as you like.
Wide colour kept: Display P3 photos stay wide-gamut instead of being flattened to sRGB.

Shape

Resize & crop: Resize to any size, and crop with subject-aware placement that keeps the subject in frame, or place the crop by hand.
Responsive set: Several sizes of each photo in one export, plus the srcset snippet to paste into your HTML.

Look

Adjust: Exposure, contrast, colour and more, per batch or per photo.
Look: 18 built-in looks, from Clear and Crisp to Cinema and Graphite. All of them are included; there are no packs to buy.
Reduce palette: Fewer colours for graphics, icons and screenshots, with optional dithering.
Border: Solid, Rounded or Shadow.

Mark

Watermark: Up to five text or image marks per photo, placed automatically or by hand.
Redact: Finds QR codes, barcodes, email addresses or all text and covers them. Cover anything else by hand.

File

Rename: Name exported files from a template.
Metadata: Choose what to keep. By default only the copyright stays; location, camera and other data are removed.
Save to: Send exports wherever you want them. Nothing touches the disk until you press Export.

Workflow

Recipes: One recipe per batch, built as a line of steps. Override any step for any single photo. Save recipes to use again.
Watch folders: Drop images into a folder and they are processed as they arrive, with an optional menu-bar icon while a folder is watched.
Shortcuts: Studio actions for the Shortcuts app on macOS.
Clipboard: Shrink whatever image is on the clipboard with ⌃⌥⌘V.
From the main window: A Studio button on any result in Shrinker Pro opens that file in Studio.

Formats.

Opens

JPEG
PNG
GIF
SVG
WebP
AVIF
HEIC
JPEG XL

Exports

JPEG
WebP
AVIF
JPEG XL
PNG

Or keep each file in its original format. Read WebP vs AVIF vs JPEG XL to choose.

Private by design.

Every image is processed on your Mac. Nothing is uploaded, and there is no account to make.

The app has no analytics. Its only network use is checking for updates and opening checkout in your browser. Once a licence is installed, Studio also downloads a list of cancelled (refunded) licences once a day, which sends nothing about you; on the free trial it makes no such request. Your licence is checked on your Mac, with no activation server, so Studio works on a plane.

The Metadata step removes location, camera and other data by default, keeping only the copyright, so photos do not leak where they were taken.

What you need.

macOS 14 Sonoma or later
A Mac with Apple silicon (M1 or later)
Shrinker Pro, free, which includes Studio
In 36 languages

Photos in the screenshots from Unsplash, by Alexander Shustov, Webvilla, Nicola Perantoni, Dietmar Becker, Ben Moore, Justin Leibow, Stockholm, Craig Garner. Filenames, the Northlight Studio watermark and the order card are made up for the demo.

Coming to Shrinker Pro in November 2026.

Shrinker Studio arrives inside Shrinker Pro, which is free. Every Studio tool will work for your first 10 exports, no account needed. Then it is US$49, once (US$35 until Cyber Monday, 30 November 2026): no subscription, no paid packs.

Coming soon — November 2026 Download Shrinker Pro, free

macOS 14 Sonoma or later · Apple silicon