Instagram Post Resizer
Resize a feed post to a common Instagram feed post size (1080 × 1080) — with fit, crop focus, format, and background controls, entirely in your browser.
Instagram Post Resizer is a browser-based image tool on ImgToolsBase. Resize a feed post to a common Instagram feed post size (1080 × 1080) — with fit, crop focus, format, and background controls, entirely in your browser. To use it, upload or drop your image and view the result directly in your browser — no signup and nothing to install.
How this tool works
Editable preset
The width and height start at 1080 × 1080 and can be changed to any size. Instagram Post Resizer always reports the final dimensions in the result panel.
Fit and crop focus
Cover fills the frame and may crop (the crop focus chooses which part is kept); Contain shows the whole image with padding; Stretch ignores the aspect ratio.
Format, quality, size
Pick JPG, PNG, WebP, or same-as-input, set the quality, and optionally a target file size. JPG fills transparency with the background color.
Verify before you post
Instagram Post Resizer is an independent browser tool and is not affiliated with Instagram or Meta. Confirm the current Instagram requirements, since sizes vary by placement and device. Re-encoding removes metadata.
Instagram Post Resizer in your browser
Instagram Post Resizer resizes a feed post to a common Instagram feed post size (1080 × 1080), a size commonly used on Instagram. The dimensions are pre-filled and fully editable, so you can keep the common size or type your own, and the result panel always shows the final pixel dimensions.
Choose how the image fills the frame: Cover fills it and may crop the edges (use the crop-focus control to keep the important part, such as a face), Contain shows the whole image with padding, and Stretch ignores the aspect ratio. Output can be JPG (a common social default), PNG or WebP (which keep transparency when the background is set to Transparent), or the same format as the input (JPG, PNG, or WebP), and JPG fills transparent areas with your background color. A 1080×1080 square is the safe default for a feed post; portrait 1080×1350 takes more space in the feed — edit the height to switch.
This is an independent browser tool and is not affiliated with Instagram or Meta — Instagram sizes change and can vary by placement and device, so verify the current requirements before uploading. Re-encoding strips EXIF and other metadata, and animated GIFs are exported as a single still frame.
How to use Instagram Post Resizer
- Upload your feed post for Instagram Post Resizer — click the upload area, press Enter, or drag the file in.
- In Instagram Post Resizer, keep the 1080 × 1080 preset or edit the width and height, then pick a fit and (for Cover) a crop focus.
- In Instagram Post Resizer, choose the output format and quality, an optional target file size, and a background color.
- Click Process, check the final dimensions and file size in the result panel, and download your feed post.
Why use this tool
Instagram Post Resizer starts at 1080 × 1080 and shows the final dimensions, so you can keep the common size or set your own and verify before upload.
Cover fills the Instagram frame with a crop focus (center, top, bottom, left, or right) so a face or logo in your feed post is not lost; Contain keeps the whole image with padding.
Export your feed post as JPG, PNG, WebP, or the same format, set the quality, and optionally aim for a target file size, then verify the achieved result before uploading to Instagram.
Your feed post is processed in your browser with the HTML canvas and is never uploaded to a server.
Common uses for Instagram Post Resizer
Size a feed post to the common Instagram dimensions before you post it.
Use the crop focus or Contain mode so Instagram does not cut off the important part of your image.
Set a target file size to aim for an Instagram size limit, then check the achieved size before uploading.
Resize a feed post from a phone, tablet, or computer browser with the file staying on your device.
Frequently asked questions
Is Instagram Post Resizer an official Instagram tool?
No. Instagram Post Resizer is an independent browser tool and is not affiliated with Instagram or Meta. Sizes and rules can change, so always verify the current Instagram upload requirements before you post.
Are my files uploaded to a server by Instagram Post Resizer?
No. The resize happens in your browser using the HTML canvas, and your feed post is never sent to imgtoolsbase or any server.
Can I change the size in Instagram Post Resizer instead of using the 1080 × 1080 preset?
Yes. Instagram Post Resizer pre-fills the width and height with 1080 × 1080, but both are fully editable, so you can enter any custom size and the result panel shows the dimensions actually produced.
With Instagram Post Resizer, how do I control which part is cropped?
Instagram Post Resizer lets you use Contain to keep the whole feed post with padding, or keep Cover and set the crop focus (for example Top) so the important part of your feed post stays in frame.
What is the best size for an Instagram feed post?
A 1080×1080 square is a safe default and is the starting preset here. A 1080×1350 portrait fills more of the feed; edit the height to 1350 to switch. Verify the current Instagram guidance before posting.
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