OG Image Generator — Social Share
Generate Open Graph (OG) social share images as SVG with customizable title, description, colors, and branding.
How it works
- 1Configure your options above
- 2Click "Generate OG Image" — processing happens in your browser
- 3Copy or download the result
What to do next
About OG Image Generator
OG Image Generator runs the developer utility job locally inside your browser. Generate Open Graph (OG) social share images as SVG with customizable title, description, colors, and branding. The work happens on your machine, the result is generated on your machine, and the page exposes the controls you need to drive it without burying them in menus.
The processing pipeline is straightforward: your input is parsed by standard browser APIs, transformed according to the options you select, and serialised back into a downloadable result. The 0 MB per-file ceiling matches what a typical browser tab can handle without paging to disk.
Most people land on OG Image Generator via a search at the moment they actually need the tool. That shapes the design: the page is a single screen with the input on one side, the controls in the middle, and the result on the other, so a first-time visitor can complete the job without reading documentation.
Because everything runs in the page, the tool scales the same way for one user or a million — there is no per-user backend cost. The page is static, the engine is the same JavaScript bundle for every visitor, and the work happens on the visitor's own device. That keeps the tool free and keeps it fast on the first interaction.
The 0 MB ceiling on input size is the only fixed limit. Output files are produced in standard formats that every common viewer recognises, and the tool runs the same way regardless of how many times you have used it during the session.
Once you have used OG Image Generator, the natural next steps depend on what you are doing with the result. Common follow-ups include App Icon Generator, SVG to PNG, and SVG to Base64. These are surfaced on the page so you do not have to hunt the catalog manually.
OG Image Generator sees the most use from site reliability engineers triaging logs and data analysts wrangling JSON, but the design is intentionally generic enough that you do not need a specialist background to get a good result. The defaults aim at the most common case so a first-time user can get the right output without changing any settings.
Output handling is intentionally boring: OG Image Generator produces a single output file and triggers your browser's standard "save" behaviour. If you have a default download folder configured, that is where it will land. There is no Favtoo-side history of jobs you have run.
The transformation in OG Image Generator is deterministic — the same input plus the same options produces the same result every run. That predictability matters when the result has to match an upstream specification or be reproducible later.
OG Image Generator is structured around the idea that a useful tool should be its own page. Open the page, do the work, close the tab — the page is the entire product. There is no onboarding flow because there is nothing to onboard into.
A few practical tips that experienced users of OG Image Generator pick up over time. First, keep your default browser updated — the engine relies on standard web APIs and newer browser versions are noticeably faster than ones from a few years ago. Second, close other heavy tabs before processing a large input; the engine shares CPU and memory with whatever else is open. Third, if you re-run the same kind of job often, your last-used settings are remembered for the rest of the tab session, so subsequent runs are essentially one click.
OG Image Generator runs as a regular web page, so there is no install step or permission grant before the first run. The page can be audited by viewing the source or by watching the developer-tools Network tab while a job runs.
If OG Image Generator appears to hang, the engine is almost certainly still working — large inputs simply take longer to process inside a browser than they would on a server with multi-core scheduling. For inputs near the 0 MB cap, give it up to a minute on a typical laptop before assuming something is stuck.
If OG Image Generator solved your problem, sharing the page link with someone who has the same problem is the most useful thing you can do. The catalog grows mostly through word of mouth; visitors arriving through a recommendation tend to be the ones the tool serves best.
How it works
- 1Open OG Image Generator in your browser. The page loads quickly and the tool is ready to use the moment it becomes interactive.
- 2Select the developer file you want to process — drag-and-drop and the file picker both work.
- 3Adjust the options to match what you need. Sensible defaults cover the most common case, so you can usually skip this step.
- 4Trigger processing. standard browser APIs reads your input, applies the transformation, and writes the result back into the page.
- 5Save the output when it is ready.
- 6Repeat the process for additional inputs whenever you need to. The page stays loaded, so subsequent runs are quick.
Common use cases
- Encode binary content for transport in a JSON body using OG Image Generator.
- Generate a quick fixture without leaving the browser.
- Format a noisy log line into something a teammate can read.
- Inspect a regex against a test string before committing it.
- Pretty-print a minified blob during incident triage.
- Inspect a payload during local development without writing a script.
- Compare two API responses to spot a regression.
- Validate a config blob before pushing to staging.
- Generate boilerplate from a single specification line.
FAQ
What are OG images?
Open Graph images are displayed when links are shared on social media like Twitter, Facebook, and LinkedIn.
Correct dimensions?
Output is 1200×630 pixels, the recommended size for OG images across major platforms.
PNG conversion?
Use the SVG to PNG tool to convert the output for social platform requirements.
Private?
Yes — generated locally.
Custom fonts?
The SVG uses system-ui fonts; for brand fonts, edit the font-family after generation.
Dynamic OG images?
For dynamic generation, use a server-side solution like Vercel OG or satori.
How long does OG Image Generator take to process a file?
Most jobs finish in seconds. Speed scales with input size and with how many CPU cycles your browser tab has available — the engine runs in your browser, so it shares resources with whatever else you have open. For inputs near the 0 MB ceiling, expect anywhere from a few seconds to roughly a minute on a typical laptop. Closing other heavy tabs noticeably speeds things up.
Does Favtoo keep a copy of files I process with OG Image Generator?
Favtoo keeps no copy of your file because Favtoo never receives your file. OG Image Generator runs entirely in your browser, the input is held only in your tab's memory, and closing the tab discards it. There is no opt-in cloud history, no "recent jobs" panel synced to an account, and no server-side retention to configure — the architecture simply has nowhere for your file to be stored.
Will OG Image Generator keep working if my Wi-Fi drops mid-task?
Once the page is loaded, OG Image Generator 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.
What does the error message in OG Image Generator mean?
Failures usually fall into one of three buckets: the input is in an unsupported format, the input is over the size cap, or the input is structurally malformed (a truncated download, a partial export, or a stream the engine does not recognise). The first two are easy to confirm — check that your file is in a supported format and that it is below 0 MB. For the third, opening the file in its native viewer first is the fastest way to confirm the source is intact.
How accurate is OG Image Generator?
OG Image Generator is built on standard browser APIs, which is the same class of engine used by professional developer utility pipelines. For deterministic operations, the output is byte-identical to what an equivalent CLI run would produce; for operations involving a codec or a model, the result is well within the range of what comparable tools generate. If you have a specific reference output you need to match, run a small test job first to confirm the configuration produces what you expect.
Can I self-host OG Image Generator for my team?
OG Image Generator is a static page running an open-source engine in your browser, so a typical corporate firewall does not get in the way as long as it allows JavaScript to load from Favtoo. For teams that need to host it themselves on an internal network, the underlying engine (standard browser APIs) is open-source and can be packaged into a private build with the same behaviour. Reach out via the Contact page if that is something you are exploring.
Is there a programmatic version of OG Image Generator?
OG Image Generator is a browser-only tool by design and does not expose a hosted API. The reason is the same as the privacy story: there is no Favtoo backend doing the work, so there is no service to call. If you need to script the same transformation, the underlying engine (standard browser APIs) is open-source and can be used directly from your own code.