Built for files Quick Look struggles with ›

Preview everything
Wait for nothing

Press Space on a 742 MB PDF, a 100,000-row export, or a 170-megapixel scan. Scope opens it on your Mac without loading the whole thing first.

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Wed Aug 20  9:41 AM
Recents
iCloud Drive › Field Work
5 items · 128.4 GB available
CursedCorp.pdf
1234
⌕ Search 100,000 rows 12 matches
#NameCompanyStatus
15,254 × 11,141
project-assets.zip2,481 items · 2.8 GB · nothing extracted
NameSizeKindDate modified
Design1.42 GBFolderAug 14, 2026 at 11:02
Source612.3 MBFolderAug 12, 2026 at 09:41
Exports744.8 MBFolderAug 9, 2026 at 17:26
brand-system.fig108.4 MBFigma documentAug 8, 2026 at 14:55
packaging-master.psd96.1 MBPhotoshop imageAug 5, 2026 at 10:18
packaging-dieline.ai42.7 MBIllustrator artworkAug 4, 2026 at 16:40
field-guide-final.pdf18.9 MBPDF documentAug 2, 2026 at 12:31
handoff-notes.rtf128 KBRich textAug 1, 2026 at 19:03
README.md4 KBMarkdown textJul 30, 2026 at 08:07
.DS_Store6 KBDocumentJul 30, 2026 at 08:07
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00:14 / 18:42
Page 1 of 386Visible pages only
742 MB PDFOnly visible pages render
Scope previewing large files on a MacBook Pro

Made for the files that make you wait

Each format gets its own bounded renderer with its own limits, so one enormous file never holds the window hostage.

Big files
Small wait

Measured on real files, not a marketing animation.

0.01secondsto index 100,000 CSV rows

Quick Look is for every file
Scope is for the hard ones

Scope renders what the screen needs first, then cancels that work the moment you move on.

Real workloadmacOS Quick LookScope
100,000-row CSVGeneric document preview0.01s index · virtualized grid
11 MB complex SVGStalled for minutes in testing~0.57s parse + first raster
742 MB PDFSystem importer pathVisible pages only · cancellable
15,254 × 11,141 PNGSystem-dependent decode56 MB settled · viewport-first
2.8 GB ZIP archiveSystem archive previewDirectory only · zero extraction

Measured on a 16 GB M1 Pro MacBook Pro running macOS 26. Results describe this test corpus, not every possible file.

Your files are none of our business

Every preview and search happens on your Mac. Nothing leaves it.

Activity MonitorNetwork
1 MB/s0
Data sent/secData received/sec
ProcessSentReceivedPackets
Scope0 bytes0 bytes0
Safari12.4 MB88.1 MB74,318
Mail1.8 MB9.6 MB8,204
Open Activity Monitor while Scope runs. The row never moves.
  • No cloud
  • No account
  • No AI
  • No telemetry

You move on, the work stops

New work replaces stale work. Compatibility importers run outside the app with a five-second cutoff.

Close it, and you get the memory back

Viewport-first decoding and bounded caches keep large previews from living in RAM forever.

116 MB28 MB

If it's on your Mac,
it probably opens

Every format currently recognized by Scope—not a hand-picked subset.

Recognized natively

Documents

Office files, Apple productivity documents, archives, structured data, and folders.

From hands-on testing

What it's like on real files

One early reaction, backed by measurements from the files Scope was built to handle.

“Very optimized, which is amazing.”

Early tester100,000-row CSV preview
CSV0.01s

to index 100,000 rows before the virtualized grid appears.

Measured on M1 Pro
PNG56 MB

settled memory after opening a 170-megapixel image.

Viewport-first decode
ZIP0 bytes

extracted while inspecting a 2.8 GB archive.

Central directory only

“The preview stays responsive because stale work gets cancelled—not queued.”

Scope engineeringInteraction design principle
PRIVACYZero

accounts, uploads, AI processing, analytics, and telemetry.

Designed into the app
Good to know

Questions
people ask

Everything important before Scope becomes your new Space bar.

What does Scope replace?

Scope is a fast alternative to macOS Quick Look. Select a file in Finder and use your chosen shortcut to preview it without opening its full application.

Does Scope upload or analyze my files?

No. Previewing, search, thumbnail generation, and text extraction happen locally on your Mac. Scope has no AI, account system, analytics, or telemetry.

Which files can it preview?

PDFs, Office and Apple productivity documents, CSV and TSV data, ZIP archives, folders, images, video, audio, plain text, and more than sixty code and structured-text extensions.

Does ZIP preview extract the archive?

No. Scope reads the ZIP central directory and lists its contents without unpacking the archive or duplicating its data.

How does Scope handle very large files?

Work runs away from the interface, can be cancelled when you move on, and is bounded by format-specific limits. PDFs render visible pages, CSVs virtualize rows, and large images begin at viewport size.

Is Scope always faster than Quick Look?

No universal multiplier can honestly cover every Mac and file. Scope is purpose-built for difficult workloads; the published figures come from the test corpus shown above.

What does it cost?

Scope will cost $12 as a one-time Mac App Store purchase. There is no subscription and no account.

Which macOS version is required?

Scope requires macOS 14 or later.

Scope app icon

See the file
Get back to work

Buy once, own it forever.
No subscription, no account.

Coming soon to the Mac App Store Scope for macOS 14 or later · $12 one time