How to Resize an Image for Instagram Posts in Chrome (1080×1080)
Your phone shoots in 9:16. Instagram's feed defaults to 1:1 square. That gap is where portrait photos get mangled — faces cropped off at the forehead, important details pushed to the edge, or the whole image squeezed into an ugly letterbox.
Fixing it shouldn't require Photoshop or uploading your photo to a third-party site. FrameForge is a Chrome extension that resizes images entirely in your browser — no upload, no account, no waiting for a server.
Instagram Image Size Requirements
| Format | Dimensions | Aspect ratio |
|---|---|---|
| Square post | 1080×1080 px | 1:1 |
| Portrait post | 1080×1350 px | 4:5 |
| Landscape post | 1080×566 px | 1.91:1 |
| Minimum width | 1080 px | — |
| Max file size | 8 MB | — |
| Formats | JPG, PNG | — |
Instagram compresses images on upload, so start from the highest-quality version you have. Working from a compressed or low-res source will look noticeably worse after Instagram's own compression runs on top of it.
Why Use a Browser Extension Instead of an Online Tool
Web resizers — Canva, Adobe Express, Squoosh — work, but they all upload your image to a remote server. For personal photos, client work, or anything you'd prefer to keep private, that's a real tradeoff.
FrameForge stays local. It runs as a Chrome extension and processes your image using your own machine's resources. Nothing is sent to any server — not even for telemetry. There's no account to create and no file size limits imposed by a backend quota.
It also works faster than web tools for large files, since there's no upload latency to wait through.
Step-by-Step: Resize for Instagram with FrameForge
- Install FrameForge — Install from the Chrome Web Store and pin the icon to your toolbar from the Extensions menu.
- Open your image — Click the FrameForge icon, then click Open image or drag your file directly onto the canvas.
- Select the Instagram Post preset — In the Platform dropdown, select Instagram Post. The canvas locks to 1080×1080 px with a 1:1 ratio.
- Adjust the crop — Drag the crop overlay to center your subject. Switch between fill modes to compare how each handles your specific image.
- Export — Click Export. FrameForge saves the 1080×1080 image to your Downloads folder, ready to upload.
Handling Portrait and Landscape Photos
Most Instagram posts start as vertical phone photos — 9:16 aspect ratio going into a 1:1 square frame. FrameForge gives you three ways to handle that:
Crop to fill (recommended): The frame is filled completely. Excess from the top and bottom is cropped. Drag the overlay to decide what stays in frame — usually centered on the subject's face or the key visual.
Fit with padding: The entire image is visible, but horizontal bars appear on the sides. Can look intentional if the bars are a deliberate color, but usually reads as an afterthought on Instagram.
Stretch to fill: The image is distorted horizontally to fill the frame. Almost always looks bad — avoid unless the distortion is a deliberate stylistic choice.
For landscape (wide) photos going into a square: the excess is on the left and right instead. The same logic applies — crop to fill and adjust the overlay to keep the main subject centered.
Which Instagram Post Format Should You Choose?
All three formats work on Instagram, but they have different behaviors in the feed:
Square (1:1) is the safest choice. It works consistently across the grid view, the explore page, and the home feed. If you're posting to multiple platforms simultaneously, the square crop is the most portable.
Portrait (4:5) occupies more vertical space in the feed — roughly 20% more screen real estate than a square. For photos that are already vertical, this format lets you show more of the image without cropping as aggressively. FrameForge can handle this with a custom crop ratio.
Landscape (1.91:1) suits panoramic shots and wide compositions. It shows less of the image in the feed preview but can work well for scenes where the width matters more than the height.
Resizing for Multiple Platforms
If you post the same content to YouTube, Twitch, or X, FrameForge includes presets for all of them. You can resize the same source image to different platform dimensions without switching tools — useful for batch workflows when publishing across channels the same day.
Frequently Asked Questions
What is the correct image size for an Instagram post? 1080×1080 px for a square post (1:1 ratio). Instagram also supports portrait (1080×1350, 4:5) and landscape (1080×566, 1.91:1). Square is the safest if you're unsure which to use.
Does FrameForge upload my images to a server? No. FrameForge processes everything locally in your browser. Nothing is uploaded, and no account is required.
What if my photo is in portrait orientation (vertical)? Use crop to fill — FrameForge lets you drag the crop overlay to keep the important part of your photo in the 1080×1080 frame, trimming the top and bottom.
Can I use FrameForge for other platforms? Yes. It includes presets for YouTube thumbnails (1280×720), Twitch panels, and X (Twitter) post sizes, so you can resize the same image for different platforms without changing tools.
Is FrameForge free? Yes — free to install with core resizing and platform presets included. A Pro upgrade adds text overlay and batch processing.