About This Tool
PostPix.site is a free toolkit for Facebook content creators — built around the Image Post Generator, which turns a headline and a background photo into a polished, share-ready image post (the bold-headline, dark-gradient style you see on news pages and social media graphics) in a couple of minutes, with no design software required. Around it sit a growing set of tools that cover the rest of the job: generating posts from news stories, building multi-slide carousels, diagnosing why a post underperformed, checking a finished post against Facebook's policies before you publish it, resizing it for Instagram, X and LinkedIn, and writing the captions and hashtags that go with it. Two AI tools also help you reverse-engineer a look you like: Image to Prompt turns an image into a prompt for an AI image tool, and Reel to Prompt turns a short video into a shot-by-shot prompt for an AI video tool.
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The core design tool runs entirely in your browser. In the Image Post Generator, your heading, image, and page name are never uploaded to a server — the whole post is drawn and exported locally on your own device, and so are the Export for Other Platforms, Character Counter and World Time Planner tools. The AI-powered tools work differently by necessity: "Why Did This Post Fail?" and "Policy Checker" send your image and text, the "Hashtag Generator", "Caption & Bio Writer" and "Caption Humanizer" send the text you type, "Image to Prompt" sends the image you add, and "Reel to Prompt" sends a few small key frames picked from your video in your browser (never the full video), to a secure server-side function, which forwards it to Google's Gemini AI to generate a result — your Gemini API key never reaches the browser, but the content you submit does leave your device for that one request. If you create a free account to save posts, those posts (and their images) are stored under your own account in our database, visible only to you.
1What You Can Do Here
- Write a heading and an optional sub heading, and choose exactly which words are highlighted in yellow.
- Upload any background photo, or pick one of three ready-made backgrounds (Midnight, Ember or Emerald), then zoom and reposition it until the crop looks right.
- Fine-tune placement — put the heading and sub heading at the top or bottom independently, and resize each one.
- Choose 3:4 or 1:1 so your post fits feed posts or square formats.
- Add a page name that appears centered at the bottom, like a publication's byline.
- Download instantly as a high-resolution PNG or JPG, ready to post.
- Reuse your post elsewhere — export it in the right sizes for Instagram, X and LinkedIn in one ZIP.
- Write the words around it — generate hashtags and platform-specific captions or bios, and check your text against each platform's character limit, and make AI-written captions sound more natural.
- Plan around time zones — convert a time in any country to your own with the World Time Planner, with several time slots at once.
- Save your work — create a free account to save posts and reopen them later from My Posts.
3Who It's For
Anyone who regularly needs to turn a headline into a graphic — social media managers, community and local-news pages, small businesses announcing sales or events, and hobbyist page admins who want a consistent, professional look — plus the captions, hashtags and platform sizes to go with it — without opening a design app every time. Although the toolkit is built around Facebook, the export, hashtag, caption, humanizer, character-count and time-planner tools also help if you post on Instagram, X, LinkedIn or TikTok.
