Post formats only
Choose portrait 4:5, square 1:1, or landscape 1.91:1 without story, reel, or profile presets getting in the way.
Free Instagram post resizer online
Resize Image for Instagram Post
Free Online Image Resizer for Instagram Post. Resize and fit your photos for Instagram posts directly in your browser.
Upload Instagram post images
Drag Instagram post images here, or click to browse
Instagram post image resizer
Fit Instagram post sizes without cropping
A focused Instagram post size converter for high-quality feed images, no-crop borders, fast local processing, and free browser export.
No-crop fit mode
Fit the full picture inside an Instagram post frame, then add a white border, custom color, or soft blur background.
High-quality export
Export clean PNG files at Instagram post dimensions, including the popular 1080 x 1350 portrait size.
Fast online resizing
Web workers prepare previews in the browser, so batches stay responsive while images resize.
Private by design
Source photos and resized post outputs stay on your device. Image pixels are not uploaded.
Batch downloads
Resize multiple Instagram post images and download ready outputs one by one or together as a zip.
Instagram post size converter
Convert a photo to 4:5, square, or landscape post sizes.
Image Resizer for Instagram Post is built for feed posts only. Use the portrait 4:5 preset for a tall mobile post, square 1:1 for classic grid work, or landscape 1.91:1 when you need to keep a wide picture. Fit full picture is the no-crop option; Crop to format fills the whole frame.
Use the portrait preset when you need to convert an image to a 4:5 Instagram size or export a 1080 x 1350 post. Use the square preset as an Instagram square post resizer, and use landscape for wide photos that should stay horizontal.
Fit full picture works like a gentler online Instagram crop tool: it keeps the whole photo visible, then adds a white border, custom color, or blur background. Batch upload also lets you bulk resize Instagram images, with ready posts downloadable together as a zip.
Instagram post dimensions
Post formats included
FormatSizeRatio
Portrait postBest all-around feed post for more mobile screen space
1080 x 1350 px4:5Square postClassic Instagram grid and balanced product images
1080 x 1080 px1:1Landscape postWide photos, banners, panoramas, and horizontal shots
1080 x 566 px1.91:1How to use
How to fit a full picture on Instagram post without cropping?
Put the full image inside the selected post frame, add border space when needed, then download the Instagram-ready PNG.
1Source
Upload your photo
Select one image or a batch. The tool starts building Instagram post previews locally.
2Format
Choose a post format
Pick 4:5 portrait, 1:1 square, or 1.91:1 landscape. Use Fit full picture when you want no crop.
3Export
Preview and export
Check the Instagram-style post preview, then download a PNG or export all ready posts as a zip.
FAQ
Instagram post resizing questions
Quick answers about 4:5, 1:1, no-crop resizing, white borders, quality, privacy, and batch downloads.
What is the best image size for an Instagram post in 2026?
For feed posts, 1080 x 1350 pixels with a 4:5 aspect ratio is usually the best all-around choice because it uses more mobile screen space. Square 1080 x 1080 and landscape 1080 x 566 are also common Instagram post sizes.
How do I resize image for Instagram post without cropping?
Choose a post format, keep Resize set to Fit full picture, then use a color or blur background to fill the extra space. This keeps the full photo visible inside the Instagram post frame.
Can I convert image to 4:5 Instagram size?
Yes. Select Portrait post in the Format menu and the page will export a 1080 x 1350 PNG with the 4:5 Instagram post ratio.
Can I add a white border for an Instagram post?
Yes. Use Fit full picture, set Background to Color, then choose white before downloading. This works for portrait, square, and landscape posts.
Will resizing make my Instagram post blurry?
The tool exports from the original file you upload at the selected Instagram dimensions. For the sharpest result, start with a large source image and avoid re-uploading an already compressed copy.
Are my photos uploaded to a server?
No. Instagram post resizing runs locally in your browser with browser image APIs and web workers. Your image pixels stay on your device.
Can I resize multiple Instagram post images at once?
Yes. Upload several photos, choose the post format, then download ready outputs one by one or export all completed images as a zip.
Which Instagram post formats are included on this page?
This page includes only Instagram post formats: portrait 4:5, square 1:1, and landscape 1.91:1.
Tool directory
More free online image tools
Jump between custom, Instagram, Facebook, YouTube, TikTok, X, LinkedIn, and Pinterest image resizers without re-uploading your source image.
Custom
Image Resizer Online
Resize any image to a custom width and height with fit, fill, stretch, and batch export.
All sizesInstagram Image Resizer
Resize posts, Stories, Reels, profile photos, and feed formats from one page.
9:16Instagram Story Resizer
Fit a full photo into a 1080 x 1920 Story canvas without cropping.
9:16Instagram Reels Resizer
Prepare 9:16 Reels images, covers, and thumbnails with safe-zone previews.
1:1Instagram Profile Picture Resizer
Resize a photo for the square profile frame and circular Instagram avatar crop.
4:5Portrait Post Resizer
Convert an image to 4:5 or 1080 x 1350 for a tall Instagram feed post.
1:1Square Post Resizer
Resize a photo to 1:1 for the classic Instagram square format.
1.91:1Landscape Post Resizer
Fit wide photos into the 1.91:1 Instagram landscape post frame.
FacebookFacebook Image Resizer
Resize photos for Facebook profiles, feed posts, Stories, Reels, group covers, and event banners.
PostFacebook Post Resizer
Resize a photo to 1200 x 630 for Facebook feed posts and shared link images.
Group coverFacebook Group Cover Resizer
Resize group cover banners to 1640 x 856 with desktop and mobile safe-zone previews.
Event coverFacebook Event Cover Resizer
Resize event banners to 1920 x 1005 with mobile safe-zone and bottom overlay previews.
StoriesFacebook Stories Resizer
Fit photos into a 1080 x 1920 Facebook Stories canvas with no-crop backgrounds and previews.
ReelsFacebook Reels Resizer
Convert photos to 1080 x 1920 Facebook Reels images with no-crop fit and safe-zone previews.
ProfileFacebook Profile Picture Resizer
Resize a photo for the Facebook profile square and preview the circular avatar crop.
YouTubeYouTube Image Resizer
Resize images for YouTube banners, thumbnails, profile pictures, Shorts, and community posts.
BannerYouTube Banner Resizer
Resize channel art to 2560 x 1440 with safe-area and device crop previews.
ThumbnailYouTube Thumbnail Resizer
Convert images to a focused 1280 x 720, 16:9 YouTube thumbnail with title-safe preview.
ShortsYouTube Shorts Cover Resizer
Resize vertical cover images to 1080 x 1920 for YouTube Shorts and mobile-first title cards.
PostYouTube Post Image Resizer
Create 1080 x 1080 square images for YouTube community posts and channel updates.
ProfileYouTube Profile Picture Resizer
Resize a square 1:1 profile picture and preview the circular YouTube avatar crop.
TikTokTikTok Image Resizer
Resize photos for TikTok Photo Mode, square posts, profile pictures, and in-feed ads.
ProfileTikTok Profile Picture Resizer
Create a 200 x 200 square PFP and preview TikTok's circular avatar crop.
In-feed adTikTok In-Feed Ad Image Resizer
Resize ad images to 1080 x 1920 and check practical TikTok safe zones.
5 formatsResize Image for X
Choose the exact X post, header, profile, vertical, or square format before resizing.
1200 x 675Resize Image for X Post
Resize one landscape X post to a fixed 1200 x 675 canvas.
1080 x 1350Resize Image for X Vertical Post
Resize one portrait X post to a fixed 1080 x 1350 canvas.
1080 x 1080Resize Image for X Square Post
Resize one square X post to a fixed 1080 x 1080 canvas.
1500 x 500Resize Image for X Header
Create a 1500 x 500 profile header and preview the avatar overlap before export.
400 x 400Resize Image for X Profile Picture
Resize a 400 x 400 square PFP and preview the circular X avatar crop.
Fit / 1200 x 675Resize Image for X Post Without Cropping
Fit a complete photo into one fixed 1200 x 675 X post canvas.
5 formatsLinkedIn Image Resizer
Resize profile photos, personal banners, company logos, company covers, and feed images with real LinkedIn previews.
1584 x 396LinkedIn Banner Resizer
Resize a personal background photo to 1584 x 396 and preview the profile-avatar overlap.
400 x 400LinkedIn Profile Picture Resizer
Resize a square profile photo to 400 x 400 and inspect LinkedIn’s circular avatar display.
4 Pin sizesPinterest Image Resizer
Resize square, standard, vertical, and long Pins with no-crop backgrounds and realistic Pinterest previews.
1000 x 1500Pinterest Standard Pin Resizer
Resize an image to 1000 x 1500 and preview the recommended 2:3 Pinterest composition.
1000 x 1000Pinterest Square Pin Resizer
Create a 1000 x 1000 square Pin with a product-centering guide and real Pin preview.
1080 x 1920Pinterest Vertical Pin Resizer
Fit photos into a 1080 x 1920 vertical Pin with mobile-safe preview markers.
1000 x 2100Pinterest Long Pin Resizer
Prepare a 1000 x 2100 long Pin and plan the content rhythm before export.