To resize one image for every social media size, open Social Pack Exporter, drag your design onto the drop zone labelled 'Drag & drop or browse', and export a single pack containing every platform-ready size. The tool works entirely in your browser, so your file never leaves your device and there is no upload step. This guide walks through the exact steps, explains why local processing beats upload-based resizers, and covers the mistakes that make social exports look soft or cropped.
What 'resize for Instagram' and other platform sizes actually require
Every social platform publishes its own recommended dimensions, and they change often. Instagram feed posts are 1080 x 1080 px (square) or 1080 x 1350 px (portrait). Instagram Stories and Reels use 1080 x 1920 px. X (Twitter) in-stream images are 1600 x 900 px. Facebook feed images are 1200 x 630 px. LinkedIn feed images are 1200 x 627 px. Pinterest Pins are 1000 x 1500 px. YouTube thumbnails are 1280 x 720 px. TikTok covers are 1080 x 1920 px.
If you export one master design and manually resize it in an image editor for each platform, you repeat the same crop-and-export loop six or seven times. That is where mistakes creep in: a square crop that cuts off a headline, a portrait crop that decapitates a subject, a file that gets saved at the wrong quality. A social export tool that produces all sizes from one source removes the repetition.
Why use a social media image resizer that runs locally
Most online social media image resizers ask you to upload your file to a server, process it there, and download the result. That model has three practical problems.
- Privacy. Your unreleased campaign artwork, client logo or product photo sits on someone else's disk. Even with a stated deletion policy, you are trusting a third party with material you may not be allowed to share.
- Speed. Uploading a 20 MB design over a home connection takes longer than the resize itself. Local processing skips the round trip entirely.
- File-size caps. Many upload-based tools reject files above 5 MB or 10 MB, or watermark the free tier. A browser-based tool has no file-size caps because the file is never sent anywhere.
Social Pack Exporter runs in the page. The drop zone says 'Processed locally — your files never leave your device', and that is literal: the image is opened from your own machine and the export happens in your browser. There is no upload area and no upload button to look for.
How to resize one image for every social media size: step by step
- Open Social Pack Exporter. The page shows a drop zone labelled 'Drag & drop or browse' under the line 'Processed locally — your files never leave your device'.
- Add your file. Drag your design from your desktop or file manager onto the drop zone, or browse to it. The tool takes one file at a time, so pick the highest-resolution master you have.
- Start from your best source. A 2000 px-wide or larger original gives the exporter room to produce sharp 1080 px and 1600 px outputs. Resizing a small image up never adds detail.
- Let the pack build. The exporter generates the platform sizes in one pass. Because it is a pack, you get the full set of dimensions from a single source rather than exporting one size at a time.
- Review the crops. Check that your subject and any text sit safely inside each aspect ratio. Square, portrait and landscape crops frame the same artwork differently.
- Export the pack. One export is one run, and the pack contains all the sizes it produced. Download the files and post them.
If you need a device frame around a screenshot before exporting, Mockup Generator drops a screenshot into a phone, browser or laptop frame, or warps artwork onto a surface. That is a different job from resizing, so use it when the presentation matters more than the dimensions.
Social media size reference table
| Platform | Placement | Recommended size (px) | Aspect ratio |
|---|---|---|---|
| Feed square | 1080 x 1080 | 1:1 | |
| Feed portrait | 1080 x 1350 | 4:5 | |
| Story / Reel | 1080 x 1920 | 9:16 | |
| X (Twitter) | In-stream image | 1600 x 900 | 16:9 |
| Feed image | 1200 x 630 | 1.91:1 | |
| Feed image | 1200 x 627 | 1.91:1 | |
| Standard Pin | 1000 x 1500 | 2:3 | |
| YouTube | Thumbnail | 1280 x 720 | 16:9 |
| TikTok | Cover | 1080 x 1920 | 9:16 |
Use this as a planning reference, not a guarantee: platforms adjust recommendations, and the exporter's pack reflects the sizes it produces. The value of the table is knowing which aspect ratios you need to keep safe before you export.
Common mistakes when you resize for Instagram and other platforms
- Designing only for the square. If your headline fills the full 1:1 canvas, the 4:5 and 9:16 crops will clip it. Keep important content inside a central safe area.
- Exporting from a screenshot. A screenshot of a design is already compressed and often lower resolution than the original file. Always start from the master asset.
- Ignoring text legibility. Text that reads fine at 1600 px wide may be unreadable at 1000 px. Check the smallest size in the pack before you publish.
- Forgetting the profile and cover crops. Stories, Reels and TikTok covers are 9:16 and get cropped differently from feed posts. Look at every size, not just the first one.
- Re-exporting repeatedly. Each save-and-reopen cycle can degrade a JPEG. Export the pack once from the original.
Pro tips for a clean social export
- Keep one master file. Maintain a layered or high-resolution master and export the pack from it every time you update the design. Never edit the exported 1080 px file.
- Check the safe zone. Assume the outer 5–10% of each canvas may be cropped or covered by platform UI, and keep logos and faces inside the middle.
- Match the platform's own crop. If you know a platform will center-crop, compose for the center so the automatic crop lands where you want it.
- Name files by size. A pack with clear filenames is easier to schedule than a folder of exports named 'final-final-2'.
- Do the audio and video artwork separately. Podcast cover art has its own required shapes; Podcast Artwork Pack turns one square of cover art into every size Apple, Spotify and your host ask for. Streamers have a similar problem with banners, panels and overlays, which Streamer Pack handles from one image.
What the free plan covers
Alvseike is free to use with no account, metered at 5 runs per day; a free account raises that to 15 a day, and a Pro plan unlocks unlimited daily use. A run is one export, however many files it contains, so exporting one social pack counts as one run. For unlimited daily use, see /pricing.
Putting the workflow together
A repeatable social workflow looks like this: keep one high-resolution master, add it to Social Pack Exporter, review each aspect ratio for safe zones and legibility, export the pack, and schedule the files. Because the processing happens locally, you can do this on a laptop on a plane, in a client's office, or on a locked-down work machine without sending confidential artwork to a third-party server. The resize itself is the easy part; the discipline of composing for multiple aspect ratios from a single master is what makes the output look intentional on every platform. Start with a master that has enough resolution, keep the important content centered, and let the pack handle the dimensions.