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Resize photos for Instagram in bulk on Mac — exact Feed (1:1, 4:5), Stories and Reels (9:16) dimensions, safe-area cropping, and a repeatable batch workflow. All local, no uploads.
Use one source set to generate Feed, Portrait, and Stories outputs in one run.
Decision Guide
A central hub for batch image workflows on macOS — resizing, format conversion, compression, metadata cleanup, watermarking, and folder-safe export, all running locally with no uploads.
Platform sizing
Bulk Instagram-ready exports without manual ratio handling.Use exact dimensions or aspect-safe exports so listings, thumbnails, and gallery images keep the expected shape.Catalog hygiene
Instagram Batch ResizerPreserve folder structure, naming rules, and metadata choices so the asset set remains usable after export.Team repeatability
Preset lockedSave the workflow as a preset so the next batch follows the same output rules without reconfiguration.
Instagram supports several placements, each with its own ideal dimensions. Posting the wrong ratio leads to awkward auto-cropping that can cut off faces, products or text. The reliable approach is to export each image at the exact size for where it will appear.
The sizes worth saving as presets in 2026 are: square Feed at 1080×1080 (1:1), portrait Feed at 1080×1350 (4:5, which takes the most vertical space in the feed), and Stories and Reels at 1080×1920 (9:16, full-screen vertical). Landscape posts use 1080×566 (1.91:1) but are less prominent in the feed.
Match the ratio to the goal: maximum feed presence, a clean grid, or full-screen vertical.
The biggest pitfall is cropping. When you Fill a frame to a new ratio, parts of the original are trimmed to cover the box. If the subject sits near an edge, it can be cut off — and on Stories, the top and bottom are partly hidden behind the profile and caption UI.
Keep important content within a central safe area, and preview each ratio group before exporting. For Stories especially, leave headroom at the top and bottom so faces and text aren't covered by Instagram's interface.
Social teams rarely post one size. The efficient pattern is to take one source set and export every placement in a single run, so a shoot becomes Feed, Portrait and Stories assets without manual re-cropping.
Defaults that keep an Instagram batch clean:
1080×1080 for square Feed, 1080×1350 for 4:5 portrait Feed, and 1080×1920 for 9:16 Stories and Reels. Keep the width at 1080px for sharp display.
4:5 portrait (1080×1350) usually wins because it takes the most vertical space in the feed. 1:1 square is the safest choice for a consistent grid.
Yes. Take one source set and export 1:1, 4:5 and 9:16 versions in a single batch run, so every placement is ready without manual re-cropping.
Export at the exact ratio for the placement and keep the subject inside a central safe area. That way Instagram displays the image without auto-cropping it.
Yes. A local resizer processes everything on your Mac, so nothing is uploaded to a server and there is no per-image cost.
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