Open Graph Preview — Social Media Link Preview
Preview how your page looks when shared on social media.
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webAbout Open Graph Preview
Open Graph Preview is part of a collection of single-purpose web and productivity utility tools. Preview how your page looks when shared on social media. Each tool is intentionally narrow — it does one thing well rather than offering many overlapping features — which makes the common path predictable and the result easy to verify before you download or copy it.
If you fit any of these descriptions, Open Graph Preview should slot cleanly into your workflow: site owners auditing pages; creators experimenting with formats; researchers gathering quick references. The tool keeps the controls focused on what matters for each of these use cases.
Open Graph Preview performs the transformation entirely inside the JavaScript runtime. Your file lives in the tab's memory while the engine works on it; the result lives in the tab's memory until the browser triggers the download. Both are released when the tab closes, the way every browser tab releases its memory.
Open Graph Preview is implemented on top of standard browser APIs. Inputs are read from the file picker or drop zone, decoded in the browser, processed, and re-encoded into the output format. Files up to 0 MB are well within the comfort zone of any modern browser.
The right moment to reach for Open Graph Preview is when you have a focused web and productivity utility job that fits inside a browser tab. Open the page, drop in the file or paste your input, choose the options that matter, and the tool returns the result.
As a workflow component, Open Graph Preview is the part you reach for when a single, well-defined web and productivity utility step needs to happen. It performs that step and returns a standard file you can carry into the next part of your pipeline.
The output handed back by Open Graph Preview is `og-preview.html`. If you would prefer to keep the result in the browser instead of downloading it, you can copy it from the result panel and paste it directly into another tab — useful when the next tool in your workflow expects pasted text rather than a file.
The hard constraints are easy to remember. Maximum input: 0 MB. Multiple files per run: no — one input at a time, by design, to keep results predictable. The same controls apply on every run.
Some notes on the design of Open Graph Preview. The page is intentionally narrow: one input, the controls relevant to the task, and one output. Adding unrelated features would make the common case slower for the majority of users, so the surface is held to what people actually use.
Some context on why Open Graph Preview exists in this form: modern File APIs, high-performance JavaScript engines, and well-maintained open-source libraries now make it possible to perform web and productivity utility work entirely in the browser. Open Graph Preview is built on top of that capability, which is why a single page can host the full pipeline.
Tips from users who reach for Open Graph Preview regularly: process one input first to confirm the settings produce what you expect before committing to a batch; treat the page as the working surface and avoid leaving large jobs running in a backgrounded tab where the browser may throttle JavaScript; and if a particular file fails, check whether the source is intact by opening it in its native viewer — most "tool errors" are actually input errors.
For most failure modes, refreshing the page and re-running the job is enough — the engine has no persistent state to corrupt. If the same input fails twice in a row, the input itself is most likely the problem (a truncated file, an unexpected variant of the format, or a stream the engine does not recognise).
Open Graph Preview produces deterministic output: the same input plus the same options always produces the same result. That predictability matters when the result has to match an upstream specification or be reproducible later.
Open the workspace above to start using Open Graph Preview. The engine loads on the first interaction so the page itself stays light, and once the tool is warm it processes subsequent jobs quickly. The moment the page is interactive, the tool is ready to do real work on your file.
How it works
- 1Reach the Open Graph Preview page in your browser to begin.
- 2Drop a web utility file onto the upload area, or click to pick one from your device.
- 3Tweak the controls if the defaults are not quite right for your input. The options are kept short and labelled in plain language.
- 4Trigger processing. standard browser APIs reads your input, applies the transformation, and writes the result back into the page.
- 5Download the result as `og-preview.html`. The file is generated in your browser and saved through your normal download flow.
- 6Run additional jobs as needed. The same controls and defaults apply on every run.
Common use cases
- Audit a marketing page before launch using Open Graph Preview.
- Create a placeholder image for a wireframe.
- Plan content without paying for a SaaS dashboard.
- Validate a setting before circulating it to a team.
- Sanity-check a webhook response while debugging.
- Run a fast accessibility check before publishing.
- Generate a campaign asset in seconds for a quick test.
- Generate a temporary asset for a social post.
FAQ
What are Open Graph tags?
HTML meta tags that control how your page title, description, and image appear when shared on social media.
Which platforms are previewed?
Previews for Facebook, Twitter/X, and LinkedIn sharing cards are generated.
Does it fetch my live page?
No — you enter the OG data manually. No external requests are made from your browser.
Which file formats does Open Graph Preview accept?
The accepted formats are listed in the upload area on the tool itself. If your input is in a format that is not directly supported, convert it first using one of Favtoo's converter tools — every Favtoo converter outputs a file that is a clean input to the next tool in the chain.
Will Open Graph Preview keep working in a year?
Open Graph Preview is updated whenever the underlying engine releases an improvement or a bug fix. Because the tool is delivered as a static page, every visit fetches the latest version automatically — there is no "version" to manage on your end. If a particular release ever changes default behaviour, the change is documented on Favtoo's changelog so you can confirm what shifted.
Does Open Graph Preview work on a phone or tablet?
Open Graph Preview runs in any modern mobile browser — Safari, Chrome, Firefox and the in-app browsers in most messaging apps all support the underlying APIs. Performance depends on the device: a recent phone handles typical inputs nearly as fast as a laptop, while older devices may take a few seconds longer near the 0 MB ceiling. The interface lays out cleanly on small screens, so you do not need to pinch-zoom to see the controls.
What does Open Graph Preview do that command-line tools do not?
Desktop apps usually have more advanced features but require installation, maintenance and (often) a licence. Paid online tools are convenient but route your file through their servers and gate downloads behind accounts. Open Graph Preview sits in between: free, instant, and private, but intentionally narrow in scope. For one-off jobs and the common web and productivity utility operations, it is usually the lowest-friction choice; for highly specialised work, a dedicated app is still the right answer.
What is the maximum file size for Open Graph Preview?
Inputs are capped at 0 MB per file, which keeps memory usage stable across phones, tablets and older laptops. You can run Open Graph Preview as often as you need; every run produces a full-quality result.
Does Open Graph Preview require a browser extension or plug-in?
No installation is needed. Open Graph Preview runs as a normal web page, with no browser extension, no native helper, and no separate desktop client to download. That is partly a privacy choice — extensions can request broad permissions, while a regular page is sandboxed by default — and partly a convenience one: you can use Open Graph Preview on any computer you have temporary access to without leaving anything installed on it.
Does Open Graph Preview need an internet connection to run?
Once the page is loaded, Open Graph Preview can complete jobs without an active internet connection — the engine is bundled with the page, so there is no per-job network call. The initial page load does require a connection (to fetch the static assets), but after that you can disconnect entirely and the tool will still work. This is a side-effect of the local-first architecture, not a deliberate "offline mode" feature.
Is Open Graph Preview keyboard accessible?
Open Graph Preview uses native HTML controls wherever possible, which means keyboard navigation, focus rings, and screen-reader labels work the way the platform expects. The drop zone accepts files via the keyboard-accessible file picker as well as drag-and-drop, and result downloads use standard browser download flows. If you spot an accessibility gap, Favtoo treats it as a bug worth fixing.
Can I use Open Graph Preview on documents that contain personal data?
Your file is processed inside your browser by standard browser APIs. The engine reads the file's bytes from your tab's memory, computes the result, and writes the result back into the tab. You can confirm what the page does by opening developer tools and watching the Network tab during a run — the requests you see are for the tool's static assets only.