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600×200 PNG · email-safe
Design assets often have to ship at a single canonical size — an icon set, a profile picture, a thumbnail — because platforms or frameworks will reject anything off-spec. Email Signature Banner produces 600×200 PNG, the size Email Signature Banner expects.
| Output dimensions | 600×200 pixels |
|---|---|
| Aspect ratio | 3:1 (3:1) |
| Output format | PNG |
| Processing | 100% in your browser — no upload |
| Cost | Free, unlimited |
Audience: every email client across Gmail, Outlook, Apple Mail, and corporate webmail.
How email signature footers ranks images: renders at 1× or 2× depending on display; clipped tightly in mobile clients. Posting at the platform's exact native dimensions (600×200 px) preserves your original framing and avoids the softening that happens when the platform's own resampler runs to fit its expected size.
Platform-specific note: Email signatures render across many clients at different DPRs; a 600×120 source covers most desktop and mobile use without forcing the client to resample.
This preset is a deterministic recipe — every step has fixed parameters so the result is byte-identical across runs of the same input.
Email Signature Banner crops your input to 3:1 and resizes it to 600×200 px as PNG — a 120-kilopixel output. The work runs through canvas APIs and a WebAssembly image-encoder; the source image is decoded into an off-screen canvas, transformed in place, and re-encoded without any network upload.
Design deliverables to clients often require an exact pixel-size; this preset's deterministic output makes the deliverable repeatable. The browser-side path also means the file never leaves your device — relevant when the input contains personally identifiable information, screenshots of private documents, ID scans, or proprietary product photography.
600×200 px, saved as PNG.
The target platform — see the cited spec — uses 3:1 as its native frame. Submitting any other ratio means the platform's own crop runs, which often clips faces or text near the edge.
PNG preserves hard edges and transparency that JPEG would smear. Icons, logos, and screenshots compress better as PNG when the image isn't photographic.
No. This preset runs entirely in your browser using WebAssembly + canvas APIs — no server round-trip. You can verify this in your browser's network panel: only static asset requests, no image upload. The file never leaves your device.