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1280×720 JPEG · under 2 MB
Each social platform crops uploaded media to its own aspect ratio before showing it in feeds. Uploading at the platform's native size — here, YouTube feed posts — preserves the framing you intended and avoids the soft-focus that comes from the platform's own resampler. This preset outputs 1280×720 JPEG, ≤ 2 MB at the the target ratio that YouTube expects.
| Output dimensions | 1280×720 pixels |
|---|---|
| Output format | JPEG @ 90% quality |
| File-size cap | 2MB |
| Processing | 100% in your browser — no upload |
| Cost | Free, unlimited |
| Source | Official guidelines |
Audience: 2+ billion monthly viewers.
How YouTube ranks images: thumbnail click-through rate is the dominant signal for algorithmic distribution. Posting at the platform's exact native dimensions (1280×720 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: YouTube serves multiple thumbnail sizes; the source must be 1280×720 minimum to avoid upscaling.
This preset is a deterministic recipe — every step has fixed parameters so the result is byte-identical across runs of the same input.
The compression loop runs in your browser. The encoder binary-searches JPEG quality to find the highest setting that keeps the output below 2mb, evaluating each candidate on the canvas without a network round-trip.
For inputs larger than the preset's max-width ceiling, the image is also down-sampled to the ceiling before compression so the file-size budget isn't spent on resolution that the final viewer wouldn't display anyway.
1280×720 px, saved as JPEG at quality 90%.
The target accepts JPEG, and JPEG compresses photographic content 5-10× smaller than PNG with no visible difference at quality 90%. PNG is the right choice only when the image has hard edges or transparency — which photo-ID, social posts, and product photos don't.
Many upload portals — email attachments, document submissions, cheap web hosts — cap individual file uploads near 2mb. The preset finds the highest JPEG quality that fits below that limit, so the result is the best image that the recipient can actually receive.
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.