Social Downloaders
Every social platform crops uploads to its own aspect ratio, and each one truncates captions at a different character count, so a post assembled once rarely survives being reposted elsewhere without damage. This group covers the three jobs that follow from that: sizing an image to a platform's published dimensions, pulling down a public thumbnail or post image you need as a reference, and drafting the caption, hashtag set or reel script that goes with it. The resizers run on the server with sharp and return a file at exact pixel dimensions rather than a browser-scaled preview. The downloaders fetch images that are already publicly served by the platform. The caption, hashtag and script generators send your prompt to a language model and return draft text, which means they are a first draft to edit rather than a finished post — and they are the one part of this group where what you type leaves your device.
Instagram Profile Picture Resizer
Resize to Instagram profile picture size.
YouTube Banner Maker & Resizer
Resize images to YouTube banner dimensions.
Facebook Cover Photo Resizer
Resize picture to Facebook cover photo size.
YouTube Thumbnail Downloader
Download high-res thumbnail covers from YouTube URLs.
Instagram Photo Downloader
Save full resolution cover photos and post images from links.
Social Media Caption Generator
Generate engaging, platform-optimized captions based on brand tone using AI.
Facebook Caption Generator
Generate engaging Facebook captions and status updates customized by tone with AI.
Instagram Caption Generator
Generate engaging, visual captions for Instagram posts, reels, and stories with AI.
LinkedIn Post Generator
Create viral and professional LinkedIn posts customized by tone and model with AI.
AI Reel Script Generator
Generate viral scripts for Instagram Reels, YouTube Shorts, and TikTok with hooks & CTA.
Hashtag Intelligence Tool
Generate categorized high-volume and niche hashtags with AI reach strategies.
Recommended Workflows in Social Downloaders
⚡ Setting up a YouTube channel's artwork
Resize the header artwork to 2560x1440 while keeping logo and text inside the 1546x423 safe area -> export a 1280x720 thumbnail for the newest video -> check both at phone size before publishing.
⚡ Publishing one image across three platforms
Start from the largest original -> crop a 1080x1350 portrait for the Instagram feed -> crop separately for the Facebook cover, where desktop shows 820x312 but mobile shows 640x360 -> keep the profile picture square so the circular crop does not clip it.
⚡ Drafting the words around a post
Describe the post and the audience -> generate a caption, then cut it so the hook lands inside the first 125 characters Instagram shows before 'more' -> build a hashtag set for reach -> script the reel if there is video.
How to Choose the Right Tool
| If Your Task Is... | Recommended Tool | Action |
|---|---|---|
| Channel header keeps getting its logo cropped off on mobile | YouTube Banner Maker | Open Tool |
| You need a video's thumbnail image at the largest size the platform serves | YouTube Thumbnail Downloader | Open Tool |
| Saving a public Instagram post image for reference or archiving | Instagram Downloader | Open Tool |
| Profile photo looks off-centre inside the circular avatar | Instagram Profile Picture Resizer | Open Tool |
| Facebook cover looks right on a laptop and wrong on a phone | Facebook Cover Photo Resizer | Open Tool |
| You have the image but no words to go with it | Social Media Caption Generator | Open Tool |
| Writing something longer and more professional in tone | LinkedIn Post Generator | Open Tool |
| Planning a short vertical video shot by shot | AI Reel Script Generator | Open Tool |
Best Practices & Practical Tips
- ✓Design to the safe area, not the canvas. A YouTube banner is uploaded at 2560x1440 but only the central 1546x423 is visible on every device, so anything essential belongs inside that band.
- ✓Front-load the caption. Instagram shows roughly the first 125 characters before collapsing the rest behind 'more', and LinkedIn cuts to a 'see more' link at a similar point on mobile — the hook has to be in that first line.
- ✓Keep a single high-resolution master and export per platform from it. Re-cropping an already-cropped and re-compressed JPEG loses detail each round.
- ✓Check every crop at phone width. The majority of social traffic is mobile, and mobile is where the aspect ratio differs most from the desktop preview you are looking at.
- ✓Treat generated captions and scripts as drafts. A model will produce fluent copy that is confidently wrong about your product, your dates and your prices, so read it before it ships.
Common Mistakes to Avoid
- ⚠️Assuming every video has a 1280x720 thumbnail. That size only exists when the upload supplied it; older videos may top out at 640x480, and the tool can only return what the platform actually serves.
- ⚠️Uploading a portrait image taller than 4:5. Instagram crops the feed image to 1080x1350 at the tallest, so a 9:16 photo posted to the feed loses its top and bottom rather than being letterboxed.
- ⚠️Pasting confidential or unpublished material into the caption and script generators. Those requests go to a language model on a server — the resizers stay on our own server, but the text tools are not the place for anything under embargo.
- ⚠️Filling all thirty available hashtags with the largest possible tags. Broad tags bury a small account within seconds; a mix weighted towards specific, lower-volume tags is what actually gets seen.
- ⚠️Re-downloading someone else's image and publishing it as your own. These downloaders retrieve publicly served files, which does not transfer any right to reuse them — credit and permission are still your responsibility.
Frequently Asked Questions
Why is the thumbnail I downloaded smaller than 1280x720?
Platforms store several fixed sizes of each thumbnail and only generate the largest when the original upload was big enough. When the maximum-resolution version does not exist, the next size down is returned instead — commonly 640x480 or 480x360 for older videos. Nothing is being downscaled by the tool; that is simply the largest file available.
Is it legal to download thumbnails and post images?
Retrieving a file that a platform already serves publicly is ordinary browsing, and these tools do nothing more than that. Reuse is a separate question: the image is still the creator's work, so republishing it commercially, or passing it off as yours, needs their permission regardless of how you obtained the file. Reference, commentary and archiving are the safe uses.
What size should a Facebook cover photo be?
Upload at 820x312 or a proportional multiple for desktop, but remember that mobile displays a 640x360 region of the same image — a narrower, taller slice. The practical rule is to keep faces, text and logos in the middle two-thirds so that neither crop cuts them, and to check the result at phone width before saving.
Do the caption generators send my text anywhere?
Yes. The caption, hashtag, LinkedIn and reel-script tools pass your prompt to a language model running on a server, because that is the only way to generate text. The image resizers are different — they process the file on our own server with sharp and return it without storing it. If you need a guarantee that nothing leaves the machine, use the resizers and write the caption yourself.
How many hashtags should a post carry?
Instagram permits up to thirty per post, but the useful number is far lower and depends on the account. Small accounts do better with eight to fifteen specific tags where they have a chance of ranking, than with thirty broad ones where a post is buried in seconds. LinkedIn is stricter still — three to five is the norm, and more reads as spam.
Why does my profile picture look cropped?
Because it is displayed inside a circle while it is stored as a square. Anything in the corners of the square is outside the circle and will not be seen, and a face positioned off-centre gets clipped at the edge. Centre the subject and leave a margin of roughly ten per cent on all four sides.